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Author Topic:   Best OEM heads
UFnARacing
Dirt Full Roller

Total posts: 68
posted September 05, 2002 04:56 PM
My rules state that I must run stock OEM heads with stock casting numers. I have a friend that has a semi junk yard that his dad is wanting to clean up. I was thinking about looking around for some good heads, exaust manifolds etc. I've searched this topic, but haven't found what I'm looking for. What stock numbers should I look for? I run a sbc 350 with hyd cam, not over .460" lift and turn from 3000 to 6000rpm.

Thanks for any help,
Randy


LUBEGUY07
Dirt Maniac

Total posts: 156
posted September 05, 2002 05:45 PM
if u can run camle hump heads they are great flowing heads but if cant use them ilook for 441 487 and 993 thease are good flowing heads


dirtbuster
Dirt Freak

Total posts: 353
posted September 06, 2002 08:49 AM
If you can run vortec heads then run them. They are by far the best flowing stock head. A lot of places wont allow them though (dont understand why myself) so you are stuck with the older heads.

If you find heads with an x such as 487x these typically had a little larger runners on them and flow well for a stock head.

UFnARacing
Dirt Full Roller

Total posts: 68
posted September 06, 2002 11:54 AM
What numbers are the camel hump heads?

What year did the vortec heads start, 1996 on trucks, what about cars?

Thanks for the info.
Randy

carscomefirst
Dirt Full Roller

Total posts: 45
posted September 06, 2002 12:15 PM
I agree vortecs are a great head. If you use them get a manifold made for them! Another great head is the cast iron bowtie (a little pricey though). some good castings are #461, 462, 041, 492 ,186, and 461x. All these heads are 64cc. I don't think that vortecs are used on cars.

dirtbuster
Dirt Freak

Total posts: 353
posted September 06, 2002 01:02 PM
i dont know if the vortec heads came on cars but they started mid year 1995 on trucks and then 96 97 98. Definetly get a manifold to match them... you can modify some old style ones to work but they dont fit right and block part of the intake ports. You can buy brand new vortecs for not much more than getting a used set rebuilt. I think scoggin dickey in Texas was selling a vortec kit which included 2 heads, intake, rocker arms, bolts and gaskets for around 725$.
They also had rebuilt vortecs with ***** in studs and guide plates and heavier springs for around 300/ea.

Another one to keep in mind is the lt-1 head that was on mid 90's camaros and firebirds. They flow pretty well but I think they have small 54 or 58cc chambers. which might hurt if you are in a compression rule class.

I guess in the end it depends on what class you run and what your rules are.

If you do happen to come across some used vortec heads in your junkyard and are not interested let me know... i would like to get a few pairs to keep on hand and play with. As well as any 350 or 400 blocks

[This message has been edited by dirtbuster (edited September 06, 2002).]

rico 08
Dirt Freak

Total posts: 372
posted September 07, 2002 10:14 AM
i agree the vortec's are very good but i think LT1 heads are reverse cooling and are totally diferent than regular heads and won't work, i've seen vortec's drilled and tapped to accept the old intake's and it worked although the factory doesn't recommend it

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