This is topic Best head size ? in forum Tech Talk at Northern California Ford Owners  .


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Posted by Santos1986gt (Member # 10513) on :
 
What size should I go for my heads on stock 5.0 e-cam,gt40p upper n lower,75mm tb,241bs inj.,
 
Posted by MauriSSio (Member # 9943) on :
 
quote:
Originally posted by Santos1986gt:
What size should I go for my heads on stock 5.0 e-cam,gt40p upper n lower,75mm tb,241bs inj.,
depends on what the end goal is.
 
Posted by RONIN (Member # 9987) on :
 
If you are going with aluminum , Trickflow 170's are perfect , Afr 165's (smog legal), RHS 180's have room for future upgrades . There's alot to choose from out there, if building a street/strip orientated car that's not stroked I wouldn't go anything larger than 185's . Also don't forget to consider combustion chamber size as it will determine your compression ratio. And also combustion chamber size can affect your piston to valve clearance depending on your cam.
 
Posted by Santos1986gt (Member # 10513) on :
 
quote:
Originally posted by RONIN:
If you are going with aluminum , Trickflow 170's are perfect , Afr 165's (smog legal), RHS 180's have room for future upgrades . There's alot to choose from out there, if building a street/strip orientated car that's not stroked I wouldn't go anything larger than 185's . Also don't forget to consider combustion chamber size as it will determine your compression ratio. And also combustion chamber size can affect your piston to valve clearance depending on your cam.
Well eventually Im going to go 331 stroker.But for now what can I use that will go good with a 331 in the future.

[ January 12, 2012, 06:42 PM: Message edited by: Santos1986gt ]
 
Posted by RONIN (Member # 9987) on :
 
Me personally on a 331 I'd run Air Flow Research 185cc with 60cc combustion chambers part# Afr-1492 for a supercharged application and for Naturally Aspirated I'd go with the 185's in a 58cc combustion chamber part#Afr-1381 to add a little compression. Or the RHS 180 Elite series. On a stroked 302 you'd see massive power gains from such cylinder heads.
 
Posted by MauriSSio (Member # 9943) on :
 
if youre planning on going with a 331 in the future but currently need them on a 302, then the trickflow 170's or AFR185's would do you well. Id even consider the TFS 190's (though they might be "too big"). Im not sure if any piston mods need to be done though since im not entirely familiar with the small blocks.
 
Posted by 79 cobra (Member # 10137) on :
 
i got the afr 185's part #1383 72cc and got them fully ported and are currently on my 306 and works great also gonna throw them on my 363 when its all paid off
 
Posted by Santos1986gt (Member # 10513) on :
 
Thanks for the help guys.
 
Posted by 96stang4.6 (Member # 9970) on :
 
anything with a 2.02 intake valve i beleve wont fit on a stock 302 with a cam due to the piston to valve clearance, pistons need to be notched so they have clearance. you are safe running a 1.90-1.94 valve i believe for stock bottom end with out clearance issues
 
Posted by triple b (Member # 8763) on :
 
I think trick flow twisted wedge 2.02 will fit but with any head any valve size it's Always! Important to check piston to valve clearance .....btw there are some good deals on here in the forsale section can't go wrong with edelbrock,Holley, afr, trick flow u will see an advantage with any of those heads compared to stock
 
Posted by Santos1986gt (Member # 10513) on :
 
Thanks
 
Posted by GTCONV86 (Member # 5385) on :
 
what year is the engine? if it is an 86 block you can't run those heads. because of piston to valve clearence
 
Posted by Santos1986gt (Member # 10513) on :
 
Yeah I know I ran into this problem when I did the rebuilt I wanted a e cam,that's why i swapped pistons and heads.
 




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