Camel hump heads

ARP 134-3601 Head Bolt Kit - Chevrolet Small Block. (85) $87.06 New. ---- Used. Find many great new & used options and get the best deals for Camel+Hump+Heads+Casting+492+%26+292 at the best online prices at eBay! Free shipping for many products!

Camel hump heads. I'm sure you will get a more technical response for this but "camel hump" heads are named primaraly for the embossed shape in front of the head where your accessories. would bolt up too. Back in the day they were sought after hi -po hp. heads that were. closed chambered large valve small block heads.

stinger460. lets not scare the man. 400 sbc's can be cooled and not over heat on the street. here's how. drill steam holes in those heads if you really plan on using them. also while having the heads off time to do some plumbing. on the block between the two center bore there is a plug in the water jacket on each side. remove them, then coming ...

Fully ported and assembled Chevy Camel hump 461 heads. Sbc Chevy heads. Nova, Chevelle, Corvette, Camaro. Old school Iron, Muscle car cylinder heads. Bad to ...Cast from premium quality aluminum that shaves 40 lbs. off the nose of your car vs. heavy iron heads. Comes completely assembled with no accessory bolt holes, just like the original heads. Improved port/chamber shape for better performance with the 3-angle machined valve job that promotes better flow, especially at low-to-mid lifts.Compatible with Camel Hump/Fuelie Heads Includes Grade 8 Hardware Pump Rotation : Standard (Not Included) Reverse Rotation (Included) Reverse Rotation (Included) Standard (Not Included) Standard (Not Included) Product information . Technical Details. Manufacturer ‎CVF Racing ...The double hump or "camel hump" casting marks can be found on a variety of small-block iron heads and designate a high-performance casting. Many heads with the double-hump mark were...steve70malibu. According to my information, 461X was the best of all the camel hump heads but are very rare. Next comes the 492 castings, next the 461, then 186, then 041s which are not camel humps but have the same design. I have a print out from a website that lists all sb heads and information on all of them.

Chevy SBC V8 Bare Aluminum Camel Double Hump 461 Cylinder Head - https://www.speedwaymotors.com/Chevy-SBC-V8-Bare-Aluminum-Camel-Double …The “double hump” or “fuelie” heads have been around since the 1960’s. They are still used in a variety of applications. We have a good supply of used ‘186 & ‘492 heads available with everything from “ Undercover Porting ” to CNC Sportsman Porting. Stock “double hump” heads flow 202 cfm intake and 141 cfm on the exhaust.Step back in time with our modern reproduction of the iconic Chevy 461 double hump cylinder heads, now cast in lightweight aluminum! ... In this video, Joe and Wyatt discuss the features that bring the vaunted camel hump heads into the 21st Century. SBC 350 Build Combinations: Recipes for 300-600+ HP. Read More. The small block Chevy is still a ...Chevy 3917291 Heads 302 327 350 Double Hump Pair Camel Hump SBC Heads 291 D 10 7. Opens in a new window or tab. Pre-Owned. $700.00. delcoenginesandcomponents (230) 100%.I can get a set of those “camel back” or “double-hump” heads—I think the cast number is 462. This is going to be a very mild 292 in my street rod and I might even add …Head and face reconstruction is surgery to repair or reshape deformities of the head and face (craniofacial). Head and face reconstruction is surgery to repair or reshape deformiti...Camel Hump heads (3817291(C 20 8(Mar 20, 1968)) – 3917291(C 21 8(Mar 21, 1968) evens) Thank you for your time! Best regards, David. Save Share. Like. Sort by Oldest first Oldest first Newest first Most reactions. D. dyno jonn.

Step back in time with Speedway Motors’ modern reproduction of the iconic Chevy 461 double-hump cylinder heads, now cast in lightweight aluminum. Also known as “fuelie” heads, the 3782461 castings were used on many legendary Chevrolets from 1961-1967. Their all-new cylinder head casting is a modern take with all the old-school looks you ...Aug 11, 2023 · The phrase “Camel Hump” or “Double Hump” heads comes from this casting boss with the two ears or bumps. These heads are some of the best factory heads ever produced. The L84 is essentially the exact same engine as the L76, but with Rochester mechanical fuel injection. They actually ran very well. The 327-300 engine used the double hump heads, with larger 1.94" and 1.5" valve size, larger port intake manifold with larger Carter AFB carb, and larger dump ram's horn exhaust manifolds. The basic shortblocks of the two 327s were basically the same. More than likely your block number is 870.The “double hump” or “fuelie” heads have been around since the 1960’s. They are still used in a variety of applications. We have a good supply of used ‘186 & ‘492 heads available with everything from “ Undercover Porting ” to CNC Sportsman Porting. Stock “double hump” heads flow 202 cfm intake and 141 cfm on the exhaust.Hello, I have the following: 462 camel hump heads. 355 C.I. small block chevy. flat top pistons, 10:1 compresion ratio. camshaft: 106 degree LSA, 250 degree duration at .050". 165-180 cranking PSI in all cylinders. Quadrajet, stock intake, exhaust and heads, no porting (it is on a circle track street stock and those are the rules).

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Aug 19, 2007. 43. hamilton, ontario. hi i picked up a set a double hump heads the casting number is 3890462 for free but need to be reconditioned. are these any good and could i get somke help with info like what they were on and sizes also are they worth anything? thanks for any help, chad_48. Oct 17, 2007. #2.Features like fast-burn combustion chambers, high-velocity ports, large diameter valve springs, and positive stop valve seals bring the vaunted camel hump heads into the 21st Century. Save yourself the hassles of hunting down original GM 3782461, 3782461X or 3890462 castings, only to find out they can't be saved.Older heads needed 32-degrees and up to ensure a more complete burn. •Stock out-of-the-box Vortec heads have approx. 480 horsepower potential naturally-aspirated. Out of the box double hump cast heads produced from 25 to 40 horsepower less, depending on valve size. •Maximum valve lift on Vortec cylinder heads is .460-inch to .480-inch.item 7 OEM GM 3782461 Cylinder Heads Small Block Chevy Camel Hump 1964 2.02 1.60 Fuelie OEM GM 3782461 Cylinder Heads Small Block Chevy Camel Hump 1964 2.02 1.60 Fuelie $895.00 +$88.85 shippingThe new heads will out perform the camel humps with ease. With the prices of new heads these days there is no reason to run 30 year old technology, unless you race in a class that has restrictions. Sure if you could get a deal like a set of camel humps already updated for about $300-$350 that would be a good deal.

Look for last 3 numbers, example 461, Casting number 3767462 identifies Camel Back heads on 327 engines in 1962 to 1967 GM models. Number 3782461 is found on heads on the 1964 to 1967 models equipped with the 327. Number 3917291 can be found on the 302, 327 and 350 engines in 1967 to 1969 models. Number 3927186 is … Even older is the troglodyte-like 64-cc chamber heads, often referred to as “double hump” or “camel hump” heads because of their distinctive casting marks on the ends of the heads. These smaller chamber heads had better flowing ports than the later 441 or 882 castings. Nov 30, 2021 · I started a build of a SJ 327 block with an older aftermarket 3.48” SJ crank. I was going to run it in my 57 with ported aluminum speedway motors camel hump heads, modified to take a staggered valve cover, and a heavily worked factory intake. I was hoping to squeak into the 12s with it. The actual CFM flow numbers would depend on if any work was done to the heads, and the quality of the valve job I did read one test on flow #'s for a 461 (stock, untouched), the #'s were as follows: .050" 1-38.9, E-20.9May 18, 2009 · 3991492. Jump to Latest Follow. 30K views 10 replies 7 participants last post by 2drpostL79 Aug 23, 2009. G. gregmontgomery Discussion starter. 203 posts · Joined 1999. #1 · May 18, 2009. can anyone give any info. on these heads .3991492 is the numbers are these good performance heads.thanks. Like. Here, hydraulic cams ruled and tach faces only read to 6,000 rpm, redlines to 5,000. But that changed in 1965. For a mere $107.60 over the base 250hp 327, the new L79 offered both Corvette ...67/68 Camaro's were short water pump engines that did not require accessory holes in the heads. 69 Camaro's were long water pump engines that only required one bolt hole in the passenger side head. (even though each head had 3 drilled and tapped holes on both ends of the head. Vintage Air will set you up with brackets for either style.A commercial initiative, disliked by activists, has helped revive their population. The Bactrian or double-humped camel is one of the last remnants of the Silk Road trade in India....Accessory holes in the heads did not come about until 1969. This was also the first year of the long style water pump. If you keep everything stock on your 1967, it is all stock parts for a '67 with the "short" water pump. Many parts houses can set you up with what you need. 69 Camaro -originally a LM1 car. 327, Edelbrock E-streets, hooker, DUI ...ARP 250-4202 Ford Diesel Head Stud Kit. $526.59. Trending at $549.00. Find many great new & used options and get the best deals for Camel+Double+Hump+Heads+Cylinder+GM+Casting+3917291 at the best online prices at eBay! Free shipping for many products!Re: camel hump vs vortec. by ProPower engines » Tue Oct 13, 2020 7:50 pm. No comparison. The vortec heads are better in every way unless you have free double bump heads and have to pay for the vortec's. If you flow the early GM heads and flow the vortec heads and compare the numbers. The big difference is in the chamber shape.How Fuelie Cylinder Heads Launched SBC Performance. By Mike Magda August 12, 2017. News that Trick Flow will re-engineer the classic small-block Chevy “double-hump” or “camel-back” cylinder heads in cast aluminum is reviving interest in the original Gen I platform, and is stirring up memories of great engines that were built with those ...

Jul 11, 2006 · the 462 and pretty much all the following camel hump heads had the D shaped chamber, and the spark plug location was moved with a large quench pad adjacent to it....these are the heads to use if you are going to run domed pistons, the 461's usually have some interference with domes and spark plugs. 461 View attachment 204412 462 View attachment ...

Period. In 1964, when the solid lifter 327s were increased to 365hp (Holley) and 375hp (FI), the double hump heads got the 2.02/1.6 valves and the 300hp/327s retained the 1.94/1.5 valves (the 250hp base engine got the pyramid heads with 1.72/1.5 valves, no good!). These first "fuelie" heads were 3782461 castings and some 461s got …For port matching your intake and heads, you can find your ideal intake manifold gasket to use as a template. Holley Performance/Mr Gasket offers this port gauge I use with 28 popular port sizes for small- and big-block Chevy heads. The hard plastic material makes scribing your heads easier. The Tools Basic head-porting tools will not break the ...There is a company out there that makes aluminum heads with the old double hump casting on the ends. Might be worth looking into. 1969 x-77 Z/28 orange/ white stripes, named by my daughter "Clementine ", M-22 close ratio, 4:10 12 bolt, CE 302. Hugger orange with white stripes. DHC 175 heads are made from premium grade A356-T61 aluminum and have the exterior styling and straight spark plug holes that deliver the nostalgic appearance customers want. On the inside, 60cc CNC-profiled combustion chambers with blended bowl machining under the valves and small cross-section intake runners promote low-RPM torque increases ... Chevrolet Small Block Camel Hump Heads (Small Camel Humps) In this video we get a tad bit confused over the Casting Numbers Watch me struggle to figure this ...Camel hump heads. Good evening to all. I am finally back into hotrodding, and have a couple of questions for whoever can answer them. I have a '59 El Camino that my uncle put a 327 in from a 1965 impala. I have since pulled the engine out and I am begining the rebuilding process. I noticed that the heads had the unique camel hump stamped on the ...ARP 250-4202 Ford Diesel Head Stud Kit. $526.59. Trending at $549.00. Find many great new & used options and get the best deals for Camel+Double+Hump+Heads+Cylinder+GM+Casting+3917291 at the best online prices at eBay! Free shipping for many products!

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Do you know what a Phillips head screwdriver looks like? Find out what a Phillips head screwdriver looks like in this article from HowStuffWorks. Advertisement The Phillips head sc...Im definetly going to have to check everything out. its got the 4 valve relief pistons, rods been marked, no idea of the cam. almost want to just throw a set of gaskets in it and see what happens. Jim. Jim. 70 chevelle, SS clone 454 4 speed 3.31 12 bolt posi. 71 camaro. (owned since 1978!) 454-th400 3.07 12 bolt.The double hump heads work fine with the "old" cams. Not great with a 383. Will they work, YES, most definitely. Never said they wouldn't work. Today, well at least for me, the old camel humps are for someone building a "period correct" engine. Sounds like that is what you are trying to make it look like. Original Camel Hump Heads. I just finished up machining two sets of heads for a customer replicating camel hump heads for a Camaro restoration. He wanted high performance heads that looked just like the originals. I machined the logos off and then machined the inset by hand around a 3/8” thick steel guide. After the rough machining was ... GSTP Alternator Bracket Kit Compatible with Small Block Chevy SWP SBC 283 305 327 350 Short Water Pump Drivers Side Black. dummy. Camoo SBC Alternator Bracket Adjustable Kit for Chevy SBC 305 327 350 383 5.0L 5.7L V8 Eight Cylinder Long Water Pump. dummy. Chrome Low Mount Alternator Bracket Compatible for SBC SB …Jul 11, 2006 · the 462 and pretty much all the following camel hump heads had the D shaped chamber, and the spark plug location was moved with a large quench pad adjacent to it....these are the heads to use if you are going to run domed pistons, the 461's usually have some interference with domes and spark plugs. 461 View attachment 204412 462 View attachment ... The car was gutless with the stock 283, and I expect it to be somewhat less gutless after the rebuild. Heads #1 - Stock rebuilt 1967 283 Powerpack heads with a good valve job and upgraded springs, +/- 60 CC chambers. Heads #2 - TFS Camel hump heads 2.02/1.60 valves, 175 CC runner, 60 CC chambers.3991492. Jump to Latest Follow. 30K views 10 replies 7 participants last post by 2drpostL79 Aug 23, 2009. G. gregmontgomery Discussion starter. 203 posts · Joined 1999. #1 · May 18, 2009. can anyone give any info. on these heads .3991492 is the numbers are these good performance heads.thanks. Like.36 posts · Joined 2002. #9 · Mar 27, 2005. i am running the double hump heads, slightly ported and polished with an rpm air gap intake and the xe274 cam. noticable lumpy idle but not too bad...combination works very well and power comes on around 2500 rpm and pulls hard well past 6000. would recommend the combination to anyone...you …A group of camels is referred to as a caravan, flock, train or herd. The Arabian camel travels up to 100 miles without drinking. It stores 80 pounds of fat in its hump, converting ... ….

There are decent heats, rather a return to the old dual quench, camel hump head. Not as power making as the L31 Vortec head of 1996-2002 but a pretty decent head for seekers of top end horsepower. What you need is the engine builds and partial VIN codes off the right front of the block between the head and the coolant pump.Re: Camel Hump Heads, adding accessory bolt holes 09-21-06 03:47 AM - Post# 1005698 In response to impalex I really don't think drilling a set of early heads would be a good idea. The later drilled/tapped heads have a totally different casting design on each end. I have an early set of heads like yours on my El Camino.A controversial display of “shrunken heads,” or tsantsa, made by the Shuar and Achuar people of Ecuador and South America have been removed from Oxford’s Pitt Rivers Museum. After ...Camel Hump Heads Long ago, and I mean long ago, I knew all this stuff by memory. I believe the first camel hump head was on the 250HP or 275HP 327. Those heads had the 1.94 intakes. The 2.02's must have been on the 350HP or 365HP, and of course the Fuelies. I used to read Popular Hot Rod religiously and they had a project …T. techinspector1. 18069 posts · Joined 2005. #2 · Nov 3, 2006. "492" – 3991492. Good performance head. They were found on 1970 LT-1 engines. They had 2.02/1.60" valves, 64CC combustion chambers, DO have accessory holes, intake port volume should be 161CC's, exhaust port volume should be 62CC's. These heads have …Camels are able to survive in the desert because their humps store fat that can provide energy for up to several weeks. Camels can survive without water for several weeks because t...Chevy Corvette 3782461 Cylinder Heads SBC Camel Double Hump Ported Fuelie. Fresh vintage Crane Cams Super Port Flow Fireball heads. Remanufactured. $1,963.67. nextgenmotorsports (408) 100%. or Best Offer. +$137.55 shipping. 41 watchers. OEM GM 3998993 Cylinder Heads Small Block Chevy Heads 1972-1973 All Stock SWEET!Sep 1, 2023 · The name fuelie is somewhat of a misnomer, however; the fuelie heads were used on carbureted engines as well. The names "fuelie", "double hump", or "camel hump" comes from the shape of the casting identifier. These heads were used during the '60s and '70s on various performance engines. Casting number "462" fuelie heads Camel hump heads, Chevy Camel Hump Heads. howaus_mw3a7d5 (7) Seller's other items Seller's other items; Contact seller; US $2,600.00. No Interest if paid in full in 6 mo on $99+ with PayPal Credit * ... Cylinder Heads & Parts for Chevy, Cylinder Heads & Parts for Chevrolet Chevy II, Engines for Chevy,, ARP 247‑4202 Head Stud Kit for 1998-18 Dodge Cummins 24v Diesel 5.9L 6.7L. Find many great new & used options and get the best deals for SBC 3927186 186 1969 Camel Back Camel Hump 300hp or 350hp Heads at the best online prices at eBay! Free shipping for many products!, As already mentioned by others, there are better heads available now. Certainly Chevy's later performance heads are better, but the BEST performance SB heads are aftermarket versions. The first version of the double hump heads was the 461, which was introduced in 1961 on the 315hp/283 fuel injected (ONLY) Corvette engine., Camel Hump Heads Long ago, and I mean long ago, I knew all this stuff by memory. I believe the first camel hump head was on the 250HP or 275HP 327. Those heads had the 1.94 intakes. The 2.02's must have been on the 350HP or 365HP, and of course the Fuelies. I used to read Popular Hot Rod religiously and they had a project …, There were many castings that ended in 462, but had different overall numbers. For example, in the mid sixtys, there were heads with the same casting numbers ( ending in 462) but had either 1.94 intakes or 2.02 depending on application. Also I know from experience that many 1.94 heads were opened to 2.02. joel, Jan 25, 2020., 68Chevele. 6066 posts · Joined 2019. #2 · Jul 6, 2019. Well Vortec heads are better out of the box over the old camel hump heads. They can be had cheap now but you have to check them for cracks prior to doing any work on them. L-29 461 BBC 11.10@118mph 9-30-22. 10.65@125mph 406 with home ported Dart 215 heads., Dear Lifehacker,, SBC Head shoot out Part 2Heres one for the Old school boys!Stock Vortec Heads VS Stock Camel Humps Vs Ported 2.02 Camel Humps!Very good info, Real flow data!..., 0. 2.125/1.625. Gen III LS1 "GTZ" aluminum 38cc angle plug. 12480011. SB2.2 head 48 ~ 54 CC angle plug 284 CC intake runner Bare heads. 12480034. 2.02/1.60. Bowtie Phase III 64cc Angle plug 184 cc intake runner. 12506450. , stinger460. lets not scare the man. 400 sbc's can be cooled and not over heat on the street. here's how. drill steam holes in those heads if you really plan on using them. also while having the heads off time to do some plumbing. on the block between the two center bore there is a plug in the water jacket on each side. remove them, then coming ..., Period. In 1964, when the solid lifter 327s were increased to 365hp (Holley) and 375hp (FI), the double hump heads got the 2.02/1.6 valves and the 300hp/327s retained the 1.94/1.5 valves (the 250hp base engine got the pyramid heads with 1.72/1.5 valves, no good!). These first "fuelie" heads were 3782461 castings and some 461s got …, Product Line: Trick Flow® DHC™ 175 Cylinder Heads for Small Block Chevrolet. Summit Racing Part Number: TFS-30210002. UPC: 0842645120428., There is a company out there that makes aluminum heads with the old double hump casting on the ends. Might be worth looking into. 1969 x-77 Z/28 orange/ white stripes, named by my daughter "Clementine ", M-22 close ratio, 4:10 12 bolt, CE 302. Hugger orange with white stripes., 67/68 Camaro's were short water pump engines that did not require accessory holes in the heads. 69 Camaro's were long water pump engines that only required one bolt hole in the passenger side head. (even though each head had 3 drilled and tapped holes on both ends of the head. Vintage Air will set you up with brackets for either style., Compatible with Camel Hump/Fuelie Heads Includes Grade 8 Hardware Pump Rotation : Standard (Not Included) Reverse Rotation (Included) Reverse Rotation (Included) Standard (Not Included) Standard (Not Included) Product information . Technical Details. Manufacturer ‎CVF Racing ..., The original heads used on the L79 are the same as the L76 and L84, the famed “Camel Hump” 461 castings with 2.02”/1.60” valves. Keep in mind that most 461 double-hump heads have 1.94”/1.50” valves, only the select few used on L79, L76, and L84 engines had the larger valves., Step back in time with our modern reproduction of the iconic Chevy 461 double hump cylinder heads, now cast in lightweight aluminum! ... In this video, Joe and Wyatt discuss the features that bring the vaunted camel hump heads into the 21st Century. SBC 350 Build Combinations: Recipes for 300-600+ HP. Read More. The small block Chevy is still a ..., Dromedary camels have one hump, while Bactrian camels have two humps. Dromedaries live in the deserts of the Middle East and north Africa. Bactrian camels live in northeastern Asia..., The car was gutless with the stock 283, and I expect it to be somewhat less gutless after the rebuild. Heads #1 - Stock rebuilt 1967 283 Powerpack heads with a good valve job and upgraded springs, +/- 60 CC chambers. Heads #2 - TFS Camel hump heads 2.02/1.60 valves, 175 CC runner, 60 CC chambers., There are a lot of castings to choose from when running the Chevy Double Hump heads. In this video we discuss what is the best casting to start with for you..., Step back in time with Speedway Motors’ modern reproduction of the iconic Chevy 461 double-hump cylinder heads, now cast in lightweight aluminum. Also known as “fuelie” heads, the 3782461 castings were used on many legendary Chevrolets from 1961-1967. Their all-new cylinder head casting is a modern take with all the old-school looks …, Even older is the troglodyte-like 64-cc chamber heads, often referred to as “double hump” or “camel hump” heads because of their distinctive casting marks on the ends of the heads. These smaller chamber heads had better flowing ports than the later 441 or 882 castings. , ARP 250-4202 Ford Diesel Head Stud Kit. $526.59. Trending at $549.00. Find many great new & used options and get the best deals for Camel+Double+Hump+Heads+Cylinder+GM+Casting+3917291 at the best online prices at eBay! Free shipping for many products!, There are a few things to consider. The valve sizes and chamber volume are two. If they have 1.94" intake and 1.5" exhaust valves a 383 would probably benefit from 2.02" intakes and 1.6" exhausts. A lot of these heads had 64cc chambers and a 383 with flat top pistons will put the compression over 11:1. If you're running pump gas on the …, I recently jailbroke my iPhone and now that it's done I'm very overwhelmed by Cydia. I've downloaded a couple apps, but I don't understand most of what I'm looking at. The descript..., biggest cam for 327 and double hump heads, flat top pistons. so i got a fresh 327 with flat top pistons and 462 camel hump heads all good, just need a cam. Im thinking around 282-286 degrees of advertised duration and around 470-500 lift, if i can go more duration i will. Ive read other threads of people recommending somewhere around …, I'm sure you will get a more technical response for this but "camel hump" heads are named primaraly for the embossed shape in front of the head where your accessories. would bolt up too. Back in the day they were sought after hi -po hp. heads that were. closed chambered large valve small block heads., Google expert Philipp Lenssen details how to manipulate Google Maps URLs to zoom in close enough to see an individual camel in the middle of Africa. The technique doesn't work in a..., Camel Hump head porting and setup. by postal123 » Sun Jun 11, 2023 5:24 pm. Gents, I'm just a hobbyist and this is my 2nd thread here and 2nd attempt at head porting. I bought a '65 K10 with 8k "rebuilt" 357 SBC. Flat top 4-eyebrow pistons, HFT cam measured 252/262, 202/214 109 ICL and 114 LSA. 492 angle plug heads, performer intake with 600 ..., Here's what you need to know if you want to hike Diamond Head on Oahu in the Hawaiian Islands. Update: Some offers mentioned below are no longer available. View the current offers ..., Heads: Iron “double-hump” 461 castings, 2.02” intake, 1.60” exhaust valves. Crank: Forged steel. L76 327 Engine Cam Specs: GM #3849346 Cast iron, Duntov “30-30” cam. ... The phrase “Camel Hump” or “Double Hump” heads comes from this casting boss with the two ears or bumps. These heads are some of the best factory heads ever ..., 041s ARE double-humps. Some of the casting numbers you see the most are 461 (no bolt holes), 462, 492, 186, 041, 041X, 291 (no bolt holes), 292 (over-the-counter GM race head) Those used to be the heads we all ran, for years and years, back before CNC casting made possible the whole aftermarket head industry as we know it., Any camel hump head is a candidate for a street engine build. But the key is what you have to spend to make them useable. A lot of them are cracked in the exhaust seat area. If you find a set of original stock heads, you'll need a valve job, exhaust seats, valve guides - maybe screw in studs/guide plates.