Quote:
Originally Posted by Dads1le
Wow 470!! That’s stout So headers are worth roughly 20 rw ?
Working on another possible build on 17 grand sport and we don’t want to mess with trans and torque converter. Pray what’s your thought on what the top end is power wise where the stock driveline is still effective.
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On my dyno we will be right around 500rw with Pat's car when we get the headers on. Headers on my car were worth 22/20rw average and 24rw peak before I put the heads on. The stock manifolds and cats are killing his motor. My dyno is notoriously stingy. I just tuned a 1SS with a couple of my bolt ons the other day on it and it only put down 424rw in 5th after tuning. When the guy brought it to me it had been tuned by another local shop and it put down 435rw on their dyno. I put that tune back in the car and it made right around 420rw on my dyno. I got that car to go 11.0's@124+ this weekend as well.
I just got my buddies 17' GS to go 10.90's Saturday with bolt ons and E. We are going for 10.70's with a drag pack and then we are doing heads and shooting for 10.50's with zero compromises to drivability.
I am not sure if I understand your question on the limits of the stock converter and trans.