Well did a build for towing on my 06 sierra. Truck has cadiallac 22s on it. 3:42 gears. 4x4 truck. Put a yank 2600 stall in. LQ4 bottom end with Ported l92s. Custom cam from predatorZ. UD Pulley and Gm Cold Air.

Truck put down 358/374 thru stock manifolds stock y and stock cat-back.

 

hmmm, seems a tad low... what are the specs of the cam? and wat intake you running?

 

I think its because the stock exhaust. It has the l92 intake on it. 214/218 cam

 

with LT headers and exhaust, i bet you'd be 400/400

 

That doesn't seem low at all to me. He is dynoing with 22's on it, which have proven to lose a little. He also has l92's on an lq4 which is fairly low compression and is running stock exhaust. Actually seems pretty good to me. Thats around what hirdlej was putting down with higher compression, full exhaust yada yada yada and through a 5 spd vs his manual. Looks pretty decent.

 

it's not a bad number! with a 214/218 it is a healthy number

 

damn could have just done lt's and left the stock heads on for way less $

 

Lt's arent going to get you even close to the 350rwhp mark.

 

check my sig mine makes 340whp on a stock cam just lt's if it had his cam in it im sure it would make well over 350whp on my stock 317 heads

 

Yours is not the norm at all. I could only get 305 with LTs