I know this isn't a LSx based truck, but whatever.

The local machine shop had a dyno day today. I know the guys up there so it was pretty cheap (for me). I made 7 pulls, could have made more, but didn't want to take up all the time.

After some tuning, this is my best pull.



Here is the graph of hp and air/fuel.



I don't know why there's that spike in the air/fuel ratio going up to almost 17:1 because the FAST doesn't show that spike, and it didn't feel like a lean spot.

I didn't have time to mess w/ the timing. It's set at 38* all the way across the board at WOT.

I'm pretty happy w/ my reults, I was going to be happy w/ 450rwhp. I think I could get 490rwhp w/ some more tuning.

Then comes the nitrous.

 

That is just plain awesome. big blocks. What are your mods now and how big of a shot are you going to run?

 

It's hard to beat a big block for monster torque numbers.What heads and cam are you running?That's definately not a stock 1990 454 they make peak hp about 4000 rpm.

 

Those are some sweet #"s The a/f seems alittle risky to me, I like the better safe then sorry ratio of 12.2. Any track #"s should be low 12's high 11's. Anyhow very awsome!!!

 

My mods are 502"ci, JE pistons (10.2:1 a/f ratio), forged GMPP crank and rods, GMPP aluminum heads (ported/poslighed/milled), Comp XE294HR cam, FAST efi.

I will spray whatver it takes to get me in the 6's (1/8th mile).

 

That is a bad *** truck. Was that all motor?

 

I imagine it is fun to drive.

 

Thanks.

Yes, this was N/A.

 

You the man! Those are sweet #'s for na, even the a/f ratio. I thought the #'s were on the spray. Congrats.

 

DAMN now thats torque