Would i be nuts if i put some AFR 220 Lt4 heads on my car?


I hear they are little bit too big for a Street Application

What would happned if i put them on?
Thanks
Marcin

 

I'm no head expert, and i am just going purely based on intuition so its probobly wrong and I hope someone corrects me if i am wrong-
but to my understanding, a bigger port = less velocity.
Less velocity is a bad thing, very bad- especially if you have a big cam and want to make any power down low.

Id really like to hear a pros opinion

 

i'm no pro either, i just know a few things. and that big of a port on a stock 350cid lt1 with your 306 cam is going to do nothing good for you down low. if you wanted a huge port i'd go the small cam route. but since you already have a 306 i would suggest something in the 200cc range or the 195's. ported stockers are however cheaper and turn out at ~195-200cc's (in my exp). that cam would probably do better for you with some more compression as well so how about just a set of well ported stockers and some angle milling with impala head gaskets. just my $.02

 

Yes you will lose some downlow, but that can be made up for in gearing Up top those will scream, i would do it

 

We all know that damn cam is too big for stock heads anyway... but did you listen

Try em out. You never know what could happen. If they dont work out, they'll be easy to sell im sure.

Keep us posted.


-Cam

 

should i stay with CC306 cam or should i go bigger...

 

Well if you're going to drop the $ on aftermarket castings, you might as well have someone decent port them... so in the end you're looking at a fair chunk of change (to most people). For most people, I wouldnt spend the $ on aftermarket castings if you're wanting what most want (450-500hp on the stock shortblock w/ a HR).

If you were to run a good 210-220cc port, i'd be running a little more cam .

 

Correct me if I am wrong but don't you have to have the intake cut to work on the AFR 220s ?

 

GM 847 is calling your name loudly and clearly. Marcin, marcin, are you listening marcin? lol.

 

The hell with that, put a nasty solid roller in it.

 

pshht, your one to talk about nasty cams

 

You want to run a 12.30@125 now

Man I agree go solid or go home