XpEdItIoUs

iTrader: (44)

Trickflow reqire aftermarket rockers and pushrod lenght i belive. AFR best bang for your $

landonew

Might be the first time I EVER heard that.

Big Bird WS6

iTrader: (9)

afr, afr, afr

call tony and talk to him.

bigd98

iTrader: (11)

317 stock heads!!!

Big Bird WS6

iTrader: (9)

i vote afr. when you order them have tony make them special. he can hand port them also. and that is waht he did for mine. sinse i am turbo. he worked on the exhuast more then normal.

HUNTER02SS

iTrader: (24)

I am biased on this. I have AFR's straight out of the box, with stock rocker arms, and love them. The ETP head's are great as well. I have some friends who run those on a turbo car as well and he like's them. I would say find the best price you can on either set and then make your decision. You will not be disappointed on either set!

EPP

iTrader: (22)

AFR is my choice for a good thick head that can handle 20 pounds of boost without having head gasket problems. AFR heads also show up much sooner than ETP heads, which means a lot to us when we are trying to keep our customers happy. Bob

jason99frc

iTrader: (12)

I made 700 with stock LS1 HEADS with a spring upgrade and 14lbs of ATI boost on a 9.5:1 347ci motor.

No need to spend the money on aftermarket heads for a goal of only 700hp.

Abdullah

iTrader: (2)

try the LS1 225cc TFS heads with slight touching up (slight porting on the critical areas).

RW99

AFR 225's 72cc, even on a mild 11 psi car.

98Z28MASS

iTrader: (6)

317's for that power level. If your going to spend the money they the AFR, ETP, and Trick Flow heads are all pretty comparable. I have heard though that ETP heads are pretty hard to get now so id say shoot for the AFR's or Trickflows.

MY99TAWS6

iTrader: (3)

People sometimes think of just peak hp numbers. Area under the curve can be affected by the heads and powerband as well. My car is hardly in boost most of the time. You don't go driving around the city in much boost. I was worried my big afr 225 would hurt bottom end but I have lots ,maybe because its a 408.
And as said as you go up in boost and up the power its nice to have thicker deck heads on there.

Louis

iTrader: (7)

Holy old thread Batman!!

Having said that , AFRs or TFS! AFRs have a great track record for delivery, reliability and a quality product. TFS makes nice 6 bolt stuff, where AFR does not. If you plan on going 6 bolt at some point, thats not a bad idea.

MY99TAWS6

iTrader: (3)

Yeah why doesn't afr offer some 6 bolt heads. Seems to be a hole in their product line for sure.

52172

iTrader: (2)

Tony where are the 6 bolts? What about the 235 and 245 heads also? Is it the economy?

tomz28

iTrader: (20)

just got my 225 TFS last night for my car