poll for which heads i should get

[luke_ftw]

AFR 185cc
Trick Flow TW


looking for good power up to redline.
other mods:
edelbrock rpm 2 intake manifold
intake/exhaust bolt-ons

leave comments on your vote.

 

[Venom351R]

Trick Flow

 

[wytstang]

TW I like the fact you can use 2.02 with out nothching the pistons. It's kinda hard to say which is best with out knowing the full story like 302/306/cam and I'm sure they will both work great no matter which you chose.

 

[Killercanary]

What pistons do you have? If they are stock the AFR185 will NOT work. If you can run them though, my choice is definitely the AFR 185's.

 

[luke_ftw]

yes pistons are stock.
why cant i run the AFRs? Compression ratio issues?

 

[wytstang]

TW heads are the only head that use 2.02 intake valves and have zero piston to valve clearance issues.

 

[06cobra]

With stock pistons.. you can't use either heads(especially with healthy cam) without clearancing the pistons, which isn't hard. BUT factory pistons aren't designed with enough meat in the areas needed to clearance for the TWs.
Truth be told, your car will perform excellent with the AFRs165, you don't have enough for the 185s.

 

[luke_ftw]

TWs arent bolt ons?

 

[Killercanary]

The 2.02" valve in the AFR185 poses piston to valve clearance issues (they'll hit), the TW head gets away with the larger valve because the valve is located in a different position in the chamber than the standard position. The holley heads ALSO have a 2.02" valve and can be used on a stock shortblock since they recessed the valave a good bit up into the head.

 

[nmcgrawj]

With stock pistons.. you can't use either heads(especially with healthy cam) without clearancing the pistons, which isn't hard. BUT factory pistons aren't designed with enough meat in the areas needed to clearance for the TWs.
Truth be told, your car will perform excellent with the AFRs165, you don't have enough for the 185s.

Terrible information....


The TFS twisted wedge was DESIGNED so that you didnt have to knotch the pistons. The AFR 185 WONT work with stock pistons but the twisted wedge will...there are as many guys running the AFR165's as twisted wedges on stock shortblocks....no one touches the piston unless they run some insane cam.

TFS told me that u can get away with the stage 2 on stock shortblocks...it will be close and that you might have to retard it a tad bit.

BTW, from my experience and from talking to others, its the exhaust valve that is usually the problem valve...which is still a 1.6.

 

[luke_ftw]

how big of hp/tq gains would i see on a stage two over a stage 1 head?

 

[nmcgrawj]

how big of hp/tq gains would i see on a stage two over a stage 1 head?

Sorry i was talking about the stage 1 cam and stage 2 cam. Im not sure of what more power you would get...you would need to match it with the intake. I say go with a custom cam though