Forum Members,

Looking for a new set of 72cc heads for my pontiac as a christmas present for myself. Where's the best source.

Thanks,

Larry Metzger
Columbus, NJ
1968 GTO Verdoro Green Hardtop
1969 Palladium Silver Hardtop

Forum Members,

Looking for a new set of 72cc heads for my pontiac as a christmas present for myself. Where's the best source.

Thanks,

Larry Metzger
Columbus, NJ
1968 GTO Verdoro Green Hardtop
1969 Palladium Silver Hardtop

The best answer to this questionis it depends. If you are looking for box stock E-Heads I have heard that Summit has the best price. Most of the Pontiac shops purchase bare heads and select their own components, valve springs etc. Going this route you can get higher quality components selected specific for your combination. Also if you wanted a special valve job or some port work to improve air flow and power potential you have options going this route. If you are interested in having your heads tailored to your specific need I highly recommend contacting Dave at S&D Performance. There are other quality Pontiac Performance shops that could provide the same services also.

Tim C

65 LeMans, 3550lb. D-ports and a flat tappet cam, 10.90@121

what Tim said, i purchased my 87 cc E-heads compleat. The engine we are building now will have a mech roller cam so we changed everything in the heads except the guideplates.

Robert Williams

Larry, the out of the box E heads are good to over 500 hp on pretty "mild" 455 applications. Our test engine prepared here last summer made 505hp/551 tq with unported 87cc heads. If you are considering the 72 cc for a 400 street engine they will make over 400 hp with ease on pump fuel. I would consider using better springs, they are delivered with a pretty stiff single spring with dampner. If you are already using a "D" port head KRE is nearly finished with their new aluminum "D" port heads. I've been directly involved with the testing of these heads, they should be available in about 3-4 weeks......Cliff

Thanks to those who replied.

The stock complete head is what I'm looking for.
Any Idea on price regarding the KRE Heads?
How about performance vs Edelbrock?

OPG gave me a price a few days ago about $50 above catalog pricing and no discount as given on most of there advertised items. Plus there out of stock! Summit is backordered to the first of the year. Is there any other place to try other than summit for better pricing. I can wait a month if necessary.

Larry

Larry Metzger
Columbus, NJ
1968 GTO Verdoro Green Hardtop
1969 Palladium Silver Hardtop

Give me a call next week i work at Summit.800-517-1035 ext 6225. The priceing on the E-heads is pretty much set in stone everyone sells them for the same price.

Larry, KRE tested their new heads on a 400 engine with H beam rods and forged pistons. Last summer they tested a 400 with 72cc 2.11/1.77 valve iron heads and Crower's 60916 cam, it made 419hp/453tq. The same combo with their new heads made 440hp/465tq. They did an additional test with the 60919 cam and made an additional 10hp. 440 to 450hp from a very "basic" 400 engine are great numbers. They engine also had very good overall power numbers, wide power band while maintaining very good idle quality. I have no idea on the pricing of the new heads?

I just finished the 455 test engine, waiting on KRE to get the 85cc heads ready and we'll be doing some dyno testing with various cams/intakes/carbs. Will post all the results.....Cliff

If you get the heads right out of the box who makes the springs what type and how about the valves? Thanks Bill http://forums.performanceyears.com/g.../icon_wink.gif

Check your local Advance Auto, should price at about $50 each over catalog. Plus state tax http://forums.performanceyears.com/g...s/icon_mad.gif. You may be able to have them in two days. http://forums.performanceyears.com/g...on_biggrin.gif Just depends on how much of a hurry your in.

Dan

Remember when sex was safe and Hot Rods were dangerous?
The DotRod rides again.
http://kurtsplates.homestead.com/files/Danplate.jpg

Bill, what valves and springs are you looking for? I have all the valves, springs, retainers and locks that Edelbrock had installed in my 87 cc heads part #6057. These parts are all new and never run, will sell all for $75.00.

Robert Williams

Thanks Robert Williams are the 72s and the 87 the same as far as the valves and spring? Thats what I was asking about whos the manuf. of these two parts. crower comp cam etc. Thanks Bill

Bill i think that Edelbrock sets up the 72 head with a longer valve than the 87 head. I will check it out after work today unless someone else kicks in with the info. Thanks.

Robert Williams

I was told that the 87cc heads run a shorter valve as the seats are "sunken" somewhat in the chamber to increase the volume, hence how they get 87cc's out of a 72cc head.

Someone may wish to correct me if i'm wrong, but it is what I was told in a thread about a month ago. It seems very logical not to have 2 different castings, but to just machine it differently.

Hope this helps

(sorry, double post)

The 87cc head from Edelbrock use 5.093" intake & 5.110" exhaust valves and the 72cc head uses 5.213" intake & 5.230" exhaust. This was in Nov 1999, doubt if they have made changes.

Actually krisr, I would think it would be cheaper to have two molds and cast them separately,than it would be to machine each head to the right specs.

The chamber I think is 'deeper' not the seats.The chamber would be closer to the vavle spring seats.Therefore the top of the valves would need to be shorter to match what the valves in the 72 cc heads would be.

johnta1
Pontiac Power RULES !!!
www.wallaceracing.com
http://wallaceracing.com/johnta1plate.jpg

Steve is correct, the valves i removed from my 87 E-heads are the shorter ones.

Robert Williams

One casting, Edelbrock varied chamber size the same way Pontiac did. They changed the chamber roof height, then used different length valves to maintain valve geometry and valve gear interchangeability.

(It is my understanding the tighter radii of the curving transition (the "short side radius") between the port floors and the valve seats on the 87cc head is why it flows less then the 72cc head)

Check out the EHeads I got on my site. They had slag left...hell basically all over. Was able to break it off with my fingers. After much dremel action they look ok...contacted em they said oh sorry bout that! Even sent em the evidence pictures... HAH! Also look around where they cut the spark plug hole. Filings there as well.

Basically they ARE NOT BOLT ON as it is advertised...

Good luck!

http://www.visualmktg.biz/transam78/