LT1 to LT4 conversion Kit ???
Burning Brakes
Joined: Sep 2003
Posts: 1,214
Likes: 0
From: Miami FL
Re: LT1 to LT4 conversion Kit ??? (BAM92)
:iagree: You either have to change timing cover, opti, timing chain, or alter the pin on end of cam as others have.
Burning Brakes
Joined: Sep 2003
Posts: 1,214
Likes: 0
From: Miami FL
Re: LT1 to LT4 conversion Kit ??? (Goody)
I just did the LT4 Hot cam on my LT1. I have ported heads and Tpis Long tube headers. Just had it tuned on the dyno at 277 rwhp. :(
Did you have a custom chip installed? Dont forget that the LT4 heads and intake will also flow better than the LT1
There is something seriously wrong with your setup if all you have is 277. Most stock LT1's make 260RWHP. Was it dyno tuned with a WBO2 installed? Are you using the 1.6 RR's as well? They are required to get the full lift benefits of this cam. The LT4 and LT1 cams are really close to each other in actual measurements, but the RR's make a bit of difference due to rocker geometry changing total lift.
Also, the LT4 uses 28# injectors, whereas the LT1 has only 24#'ers. I'm curious what your injector duty cycle is at. Are your heads really "ported" or just gasket matched?
Did you have a custom chip installed? Dont forget that the LT4 heads and intake will also flow better than the LT1
There is something seriously wrong with your setup if all you have is 277. Most stock LT1's make 260RWHP. Was it dyno tuned with a WBO2 installed? Are you using the 1.6 RR's as well? They are required to get the full lift benefits of this cam. The LT4 and LT1 cams are really close to each other in actual measurements, but the RR's make a bit of difference due to rocker geometry changing total lift.
Also, the LT4 uses 28# injectors, whereas the LT1 has only 24#'ers. I'm curious what your injector duty cycle is at. Are your heads really "ported" or just gasket matched?
