SI-Trim-Capable of 190mph?
Thread Starter
On The Tree
Joined: Jul 2009
Posts: 182
Likes: 0
From: Houston
SI-Trim-Capable of 190mph? Hey guys. I am setting up my car for the Texas Mile in October. I'm curious if you think I can get to 190mph with the SI-trim that I currently have.
Mods will be.
402 stroker with L92 heads
232/244 comp cam
SI-trim, 6 rib with either the 3.4 or 3.6 pulley(depending on belt slip, etc)
Alky Control Meth kit
Full exhaust
Custom EnglandGreen Fuel System
Z06 swap bars
Toyo R888's all the way around on stock wheels
I'm guessing that my car should make 675-725rwhp, but I won't know until it is done. The car is not a Z51, which should help a lot. My budget is going to be maxed out with the above, so I'm trying to stay with the SI trim, but have a feeling it is going to run out of steam on the top end. Even though it isn't much upgrade, I think the T-trim might get another 40-50hp, and I won't have to change to a flip drive or 8 rib, but that is my only option financially right now. The YSI is probably out of the question.
I know 700rwhp is generally the bottom end of running 190mph in Texas. The only 2 vettes that I have seen break that mark with less or similar power, are Art and Arnold(gotjuice) in their nitrous fed 427's. I think a Lingenfelter ZR1 did, but I didn't personally see it.
Any suggestions are welcomed to hit 190mph in the standing mile.
Mods will be.
402 stroker with L92 heads
232/244 comp cam
SI-trim, 6 rib with either the 3.4 or 3.6 pulley(depending on belt slip, etc)
Alky Control Meth kit
Full exhaust
Custom EnglandGreen Fuel System
Z06 swap bars
Toyo R888's all the way around on stock wheels
I'm guessing that my car should make 675-725rwhp, but I won't know until it is done. The car is not a Z51, which should help a lot. My budget is going to be maxed out with the above, so I'm trying to stay with the SI trim, but have a feeling it is going to run out of steam on the top end. Even though it isn't much upgrade, I think the T-trim might get another 40-50hp, and I won't have to change to a flip drive or 8 rib, but that is my only option financially right now. The YSI is probably out of the question.
I know 700rwhp is generally the bottom end of running 190mph in Texas. The only 2 vettes that I have seen break that mark with less or similar power, are Art and Arnold(gotjuice) in their nitrous fed 427's. I think a Lingenfelter ZR1 did, but I didn't personally see it.
Any suggestions are welcomed to hit 190mph in the standing mile.
Thread Starter
On The Tree
Joined: Jul 2009
Posts: 182
Likes: 0
From: Houston
M6 and I will be running a 26.5 inch tire with stock non Z51 gearing(good for top end). I've done 190 in the car with the stock LS3 block at around 700rwhp, but not in a standing mile.
I think I am Going to leave the 6 rib and probably go with a flip drive instead of the 8 rib. I like the success the flip drive guys are getting.
I think I am Going to leave the 6 rib and probably go with a flip drive instead of the 8 rib. I like the success the flip drive guys are getting.
Im not sure if you would even get that much hp with the si-trim and a huge pulley like that. I ran a 2.95 8 rib pulley on my 403 through an m6 and it only made 662. I would say if you cant afford to go with an 8 rib setup, then at least go with a smaller pulley and have it carbinite coated. Im currently upgrading to a YSI with a 2.5" carbinite coated pulley.
Thread Starter
On The Tree
Joined: Jul 2009
Posts: 182
Likes: 0
From: Houston
Thanks. Yeah, I guess we will just see when the motor is finished what it makes. I compared 2 similar dynos at EnglandGreen and they were in the high 600's at about 10psi.
My stock LS3 made 630rwhp with the stock cam and stock exhaust with the 3.6 pulley, but I know the 402 will be a different story. We are keeping the compression around 10.3, so it won't be a major drop there.
My stock LS3 made 630rwhp with the stock cam and stock exhaust with the 3.6 pulley, but I know the 402 will be a different story. We are keeping the compression around 10.3, so it won't be a major drop there.
