Ok so I'm still doing some research but it seems to be a close race between AFR heads and TF Gen-x heads.. What is everyone's thought?? Hp gain difference?? Reliability ? I'm looking at the 215 or 210 range heads

 

What kind of cam and intake are you doing?

 

Fast 102 with rails and all... Comp cam idk maybe a custom grind something that would go well with the heads I get

 

Those are both really nice heads. Not sure which ones would be better. I guess it might depend if they are just out of the box, or ported, who ported them, etc....

 

allgoodz28, I had the very same dilemma to too long ago. I called up Brian Tooley Racing and spoke with Brian himself. Might I add that he is one heck of a great guy. I ended going with the TFS the he recommended. I also bought a fast 102 from, and had him to port it to match my new heads as well as custom ground cam. Now if I only could get it in the car!!!

I would suggest that you give Brian a call IMO there is no one better out there.

 

I 2nd that!

 

How can you possibly ask a question about "what heads" without saying anything anything about how you intend to use them?

 

I plan on doing around 480 to the ground all motor currently with possible upgrade to blower later... Custom grind cam

 

Flip the LS1 and find a 6.0l if you want that much rwhp in a heavy truck.

No way I would be looking at an LS1 for possible blower use later the iron blocks are a much better place to start, though I wouldn't go trying for 480rwhp NA with a 5.3 I would use a 5.3l for later boost over an LS1.

 

Heavy truck?? I've seen ls1 stock hold more then that kinda na hp... 5.3 I've heard are good for turbo build it think I'm going SC

 

crossed threads in my head, was thinking of another.

 

if you get trick flow heads talk to Brain Tooley or the guys at vengeance racing ,or the guys at EPS cams.if you get a AFR talk to Tony Mamo .also consider the Texas speed PRC 225 cast heads .they are 13* ,and use stock GM rockers .

 

It's cool no worries

 

Afr heads seem to be the way I'm headed I can do a trunion upgrade with stock rockers

 

Thought AFR came with bronze guides meaning stock rockers are a BIG NoNo

 

Where have you seen this?? Everything I read you can use them with the trunion upgrade with no issues

 

I'm going with the Texas speed as cast 225s and trunion upgrade to my rockers for $1800... But if your set on afr/trick flow, everyone I asked and everywhere I researched pointed twards the TFS hands down.. Then you'll need aftermarket rockers and pushrods to match easily cost you an extra grand over prc heads

 

Then you haven't been paying attention EVERYONE says bronze guides and stock rockers is valveguide damage in progress.

That is one of the big pluses with the Trickflow is several vendors will put PM guides in them for a modest fee saving the large cost and valvetrain stability issues that come with roller rockers.

Honestly if you thought you could use stock rockers with the bronze guides in aftermarket heads then put this project off a few more months because you are apparently not doing any meaningful research yet.

 

Dude stop being a dick, damn..... give some constructive criticism, you have over 9k post tell him exactly why you should not use stock rockers with bronze ect.....

 

Good point, it is such common knowledge I didn't even think to post it. Bronze guides are so soft the mild sideloading the flat tip on the stock rockers put on the valve will quickly wear out the bronze guide. The "solution" to such is often considered to be aftermarket rockers which include roller tips which cost a lot of money and are heavier and harder to control thereby causing you to spend even more on say titanium retainers, larger diameter stiffer pushrods and heavier springs. Costs spiral out of control fast for something that is more of a pretend upgrade over CNC'd OEM casting than a real one. At least the Trickflows some vendors offer an option of Powdered Metal guides which is the stock guide material,