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Speed Inc 408ci / 12bolt / TH400 dyno numbers Got my car back last week, only drove it home (7 miles) and for about 5 mins this weekend. Have not gone WOT yet until it breaks in, but you guys have no idea how much low end torque this thing has Anyway, the LS1 GOD's at speed inc managed to squeeze 458rwhp / 532rwtq :eek2: this is through full exhaust, TH400 trans, 12 bolt |
sick looking numbers. you'll have a huge smile the first time when you get on it. just sit back and hold on. how does it sound, alot different than the 346ci.? |
THAT IS FRIGGIN SWEET. good luck with it :devil: |
What kinda heads? Those numbers are great considering the power robbing drivetrain. It should fly. |
Those #'s are great for the tranny and rear setup.. |
Originally Posted by MeanWS6 Got my car back last week, only drove it home (7 miles) and for about 5 mins this weekend. Have not gone WOT yet until it breaks in, but you guys have no idea how much low end torque this thing has Anyway, the LS1 GOD's at speed inc managed to squeeze 458rwhp / 532rwtq :eek2: this is through full exhaust, TH400 trans, 12 bolt |
Mean, Your results are one of the few I've seen here where your torque rating is higher than the HP. This is typcial of Gen I/II small blocks. What's the HP/TQ RPM's? What makes this combo different than the rest here which seem to all be low on TQ? --JMarsa |
Originally Posted by jmarsa Mean, Your results are one of the few I've seen here where your torque rating is higher than the HP. This is typcial of Gen I/II small blocks. What's the HP/TQ RPM's? What makes this combo different than the rest here which seem to all be low on TQ? --JMarsa |
Maybe they didn't go WOT on the dyno if it wasn't broken in? :D |
Very nice Ryan. Back in the day when I had an ARE 422ci, I did 450 unlocked and 475rwhp locked. I did 505rwtq locked. I went 11.02 so I'm sure your car is sick fast. Nice meeting you last month at Speed Inc. |
Originally Posted by 01-Z Maybe they didn't go WOT on the dyno if it wasn't broken in? :D Same to you John - Nice to put a face with a name. :cheers: |
Nice set up. Yea on the torque we forgot one thime to lock the converter and the torque went nuts over 550! Fun to drive though. Have fun. |
Originally Posted by ONEBADWS6 it's because the car has a TH400 and there is no lock up with a TH400 |
Originally Posted by maddboost Precision Industries offers a lockup kit and converter for the TH400. |
What size cam are you running? |
It's broken in after 2 heat cycles. :) FYI, nothing on my car was ever "broken in". My car had a under 10 miles on it when I bought it. I left the dealership @ Redline and drove it to the track and raced it. :D Maybe just my car likes to be punished? LOL |
Originally Posted by LASTLS1 Can you put that on, on top of the trans break? |
Originally Posted by maddboost Precision Industries offers a lockup kit and converter for the TH400. There stuff is to inefficent and they never got the stall right after 3 times. I'll keep my TCT. |
nice numbers. I'll be getting my 408 running soon.....wat kind of intake/exhaust setup are you running? I would like to see similar numbers through my 4l65e bu tim still running the stock intake, for the exception of the filter.... yeah i know, that is the FIRST thing to go besides the subframes... |
Here are answers to everyones questions: Heads: Custom ported RGR heads Dyno: Dynojet Converter: 4K TCT, trans-brake on TH400 Cam: 242/250 .611/.619 114+2 Intake: FAST 90mm; TPIS 90mm TB Exhaust: SLP headers (swaping to Kooks); full exhaust w/ cutout |
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