Vortec or Camels

[learner]

I'm getting ready to build an engine(350) for a circle track truck. The most important rules are stock heads-no port work, flat cam and flat top piston. I really don't care what the rpm range is i will match the parts accordingly. I'm curious what the better head is for the class.


Thanks in advance

[speedtalk]

Vortec all the way - they win, port or no port. Do you need a used set?

[learner]

Thanks Don, the guy has a set. I don't know the casting number yet. I noticed your sheet has the 885 casting, is that the best casting? and i've heard the 906 castings mentioned before, what about those?


Thanks

[speedtalk]

i've heard the 906 castings mentioned before, what about those?

I don't know the difference between the two castings

[maxracesoftware]

The Vortecs are potentially much better than DoubleCamelHump heads

Vortecs can take 2.055/1.600 like #462,#461,etc, but you don't have to do anywhere near intake valve unshrouding with Vortecs

spark plug location is further in chamber, better designed chamber

no water above majority of intake port roof
can mill spring seats to 1.550 to 1.640 od easily and safely

intake and exhaust port shape is better, and can make more HP easier than #461,#462s

[learner]

Thanks you guys for the replys and information. What about a preferred intake manifold?

[maxracesoftware]

i like the Edelbrock Super Victor for Vortec, but not how it comes out of the box shape..needs plenum work for good flowing heads

http://www.maxracesoftware.com/Super_Vi ... _640_1.jpg

http://www.maxracesoftware.com/Vortec_I ... 00x600.jpg


http://www.maxracesoftware.com/Vortec_Chamber.jpg