Trick Flow 235cc vs. LS7 head
FormerVendor
Joined: Nov 2001
Posts: 3,065
Likes: 6
From: Houston, Tx.
John,
I don't think it would change much except the exhaust becomes more important then. The larger you make an intake port and valve the less duration you need to fill a given cylinder at a given rpm. The LS7 has a much bigger intake port and valve so it can run extremely well even with a tiny cam such as the way it does in OEM form still making 450 RWHP with a tiny cam. On the exhaust side of a blower engine you need a better port than on an NA since you are now expecting it to pass much more exhaust than before.
I don't think it would change much except the exhaust becomes more important then. The larger you make an intake port and valve the less duration you need to fill a given cylinder at a given rpm. The LS7 has a much bigger intake port and valve so it can run extremely well even with a tiny cam such as the way it does in OEM form still making 450 RWHP with a tiny cam. On the exhaust side of a blower engine you need a better port than on an NA since you are now expecting it to pass much more exhaust than before.
It seems like the Trick Flows are great heads, in fact I am thinking about getting them. But it does seem like there are a fair amount of Z06's that are getting 540-575 rwhp with cam only and 575-625 rwhp with cam/ported heads.
It just seems like the non LS7 headed cars need really high compression/more cubic inches to get similar results.
It just seems like the non LS7 headed cars need really high compression/more cubic inches to get similar results.
