I have a forged 390 from AES with 317 heads i'm going to upgrade the heads asap and wanna know which heads will be best for 1000rwhp
my cr with 317's is 9.5-1 with ls9 head gaskets
cam is 23x-23x .int .6xx exh. .5xx 114+4
car is a street/strip car so would like it strong on both.
thanks for any help i can get with this.
budget would be under $3.5 - $4k for heads/rockers

 

Trick Flow 235's or 245's.

We also sell a lot of these and I wouldn't want another head on my car in your type application.

 

TSP & PRC FTW


237's

or 247's


they have the thick deck

and run a little less than the AFR.

AFR's are nice too. I am not sure if there is an advantage to either brand. I just know I personally wanted to try them out to compare them to TFS, AND AFR


I do not know alot about the manufacturing of cylinder heads, but seems like now a days the machines are all so nice and advanced that they pretty much all do the same thing. And we all know TSP has some nice *** machining products and great turn around time.

http://www.texas-speed.com/c-47-cylinder-heads.aspx

 

OP do you have 1/2" head studs already?

 

yes i do.

 

Then TFS are the heads for you! If you order them from TEA they can machine them to use the 1/2" studs.

 

you guys think the 245 would be too big for my 390?
235's are for minimum 4.030 bore
These fully CNC ported 245cc heads are specifically designed for the large cubic inch strokers with 4.155" and larger bores.

 

I still have to vote some AFR's. And Tony is a great guy to deal with who stands behind his product.

 

I have some TFS 6 bolt 245's for my new combo going together. The 235's should do exactly what you want!

 

I am planning on using the 245's on my 4.030 bore 408 nitrous motor.

 

Thanks Martin. I'm going with the 235's but was looking at tea tfs 235's, do they really charge tax on them? I thought that was strange being im not in there state...

 

I'd have to ask Mike@TEA if that is the case.

 

I agree you cant go wrong with TFS or AFR.