head with thicker deck and extreme good flow numbers. 
best head for FI
I vote AFR's simply because I have not seen another car make as much power as mine on 9.4psi with 11.4 afr & 14* at 6k. They must flow pretty well. Numbers in sig
That is because you haven't seen my dyno sheets LOL! Whats' up Scotty? I have both AFR's and TFS's heads the TFS"s have a slight advantage although it isn't worth mentioning on a FI car probably. Take your pick you will be fine try not to look stress over it they are all good FI heads and the deck thickness is the main thing. Good luck.
Jeff
BY NemisisC5
That is because you haven't seen my dyno sheets LOL! Whats' up Scotty? I have both AFR's and TFS's heads the TFS"s have a slight advantage although it isn't worth mentioning on a FI car probably. Take your pick you will be fine try not to look stress over it they are all good FI heads and the deck thickness is the main thing. Good luck.
Jeff
That is because you haven't seen my dyno sheets LOL! Whats' up Scotty? I have both AFR's and TFS's heads the TFS"s have a slight advantage although it isn't worth mentioning on a FI car probably. Take your pick you will be fine try not to look stress over it they are all good FI heads and the deck thickness is the main thing. Good luck.
Jeff
TECH Fanatic
Joined: Jul 2002
Posts: 1,218
Likes: 1
From: MI
Kurt at W2W did it with one of his motors. I think he may have used a stock casting head though as well and just machined the holes in the head. The block has an extra stud boss welded on the block and I think the other side is drilled and tapped....
PM Kurt and he'll be able to answer more thoroughly. However, at those powerlevels the stock LS1 block is a liability anyways.
PM Kurt and he'll be able to answer more thoroughly. However, at those powerlevels the stock LS1 block is a liability anyways.
Kurt at W2W did it with one of his motors. I think he may have used a stock casting head though as well and just machined the holes in the head. The block has an extra stud boss welded on the block and I think the other side is drilled and tapped....
PM Kurt and he'll be able to answer more thoroughly. However, at those powerlevels the stock LS1 block is a liability anyways.
PM Kurt and he'll be able to answer more thoroughly. However, at those powerlevels the stock LS1 block is a liability anyways.
TECH Resident
Joined: Jan 2007
Posts: 751
Likes: 0
From: Texas
BY NemisisC5
That is because you haven't seen my dyno sheets LOL! Whats' up Scotty? I have both AFR's and TFS's heads the TFS"s have a slight advantage although it isn't worth mentioning on a FI car probably. Take your pick you will be fine try not to look stress over it they are all good FI heads and the deck thickness is the main thing. Good luck.
Jeff
That is because you haven't seen my dyno sheets LOL! Whats' up Scotty? I have both AFR's and TFS's heads the TFS"s have a slight advantage although it isn't worth mentioning on a FI car probably. Take your pick you will be fine try not to look stress over it they are all good FI heads and the deck thickness is the main thing. Good luck.
Jeff
S'up Jeff??...Hope things are going well Bro....Post Your Charts 
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Launching!
Joined: Apr 2007
Posts: 279
Likes: 0
From: lynchburg va
I'm running the l92 heads from texas-speed with no problems, the max boost I have run so far is 16 psi....I think any head mentioned above will make the power level you are looking for...good luck....