Nice numbers! But it looks like you may have some valve train stability issues...

Definitely a kick *** build.

Like just as quick with 700 more lbs and 3 more passengers.

Like 15 cu ft more luggage space.
Like lower insurance rates.

Like the feeling of pulling away from a corvette as it sleeps at the lights not expecting a family luxury sedan to own it, Been there. Done that. :P

We'll actually never know if Jeff could take Corvettes on the highway.
I request BC-acceptable videos!

Why do you say that? Is there somthing in the graph? If you are referring to the dip at 5500, that'* the point where the KS finally reduced total timing to dismal 3deg.

It may be different for GMs, but usually when a dyno chart is kind of jagged (for lack of a better word) like that it signifies some valve train instability...for Fords at least.

Nevertheless, I'm not trying to knock you down because they're definitely some nice numbers and one hell of an ambitious project!

Oh, i think this is a case of bad timing advance. A good dyno run will usually be much smoother.

Good deal.

I am not having any luck with the TCM controlling the trans. I tried to scan it and get it to work on my emulator to no avail. It has all the power and ground it needs, but I get no MIL, no scan data across the serial data line, and no shift, it stays in 1st (better then staying in 4th) so I know it has power and goes into a limp mode b/c 1st gear is not a natural default, that would be 2nd. I might have connection issues...

But I hooked both sol wires to my Perf Shift (ground) switch, so I start in 2nd, get third (if the shifter is in 3rd (3) and then bump to 4th (D). I get a 2-4 if I leave it in D. I can;t imagine 1st gear with the 3.71 FDR. I might be looking to switch to the 3.11 ir something in b/t, there'* a 3.48 that might be nice. I only run 118 in 3rd and with the power I am making, might be running faster than that in the 1/4-mile. A 3.48 will give me about 130 to work with!

HEY! I just ran the numbers... I don;t think I have a 3.71! That would give me 125mph @ 6500. I was hitting the rev limiter on the dyno at 118! Could I possibly have the rare Eldo 4.10?!?!?!?!? I'm on the phone with my tranny guy right now.

The 3.71 would be over 125 @ 6500

Well, I read somewhere on the net about a 4.0 FDR. I can't find anything about it or what models it was available in, but when I run the numbers, 6500rpm, 24.5" tire (measured on the car), 4.0FDR and 1:1 trans gear, I get 118.59mph. It hit 118 on the dyno at 6500! CRAP! a 4.0 is too low, really. I'll be shifting into 4th gear in the 1/4-mile! I guess that'* not the end of the world, with a 4.0, the actual final overdrive ratio is 2.73, not far off the 2.97 stock FDR in a 4T65E. And with 450+whp, it should pull just fine in 4th! What a holeshot it'* going to have when I finally get 1st gear up and running! LOL! it'll be only 40mph in 1st!

The bad thing about it is I made a 4 hr round trip this week and only got 18mpg on a full tank, 303 miles, 17 gallons. I am not locking the tq converter yet, so that might pick up 2 or 3mpg at the most. Still, that'* pretty dismal. But I guess to run in the 11'* and get 21mpg is not something most people can claim!

Well, if you're pushin' 500+ at the wheels when she'* all tuned, that should be high 10'*, shouldn't it? I think BADSSEi was 514 whp, 10.7'*, or somethin' like that.