I have been searching for Vortec TPI 1/4 mile results and haven't found many. Anyone here have #'s from an L98 with vortec heads and TPI?

 

years ago with vortech heads , scoggin dickey base , modified runners , a small cam , stocker gears and converter i went 13.50's on bridgestone tires
@ 102 mph i think 150,000 plus miles on engine

 

How much did you do to the stock CPU? Thanks this is very useful info!

 

not much if i remember. maybe a little timing or something

 

I would only expect maybe 2-3 tenths gain just doing a head and intake base swap. To get full advantage from it you would need a tune. Mostly to tweak the fueling and timing. However it wouldn't require one to run. Especially if you have a AFPR and a wideband or the abilty to read the o2 @ WOT.

 

I ran 12.5's with stock 906's and a vortec HSR

 

What cam? From a 350?

 

XFI280, from a 355. Had more in it too, wasn't really tuned. Swapping the heads for AFR 912's now

 

What was involved in installing and tuning your stealth ram? Did you run the stock ECU?

 

How much trap speed?.Nice too see gains with 912's,I haven't seen much results with those heads.

 

ran 11.90s with a carb and vortec heads years ago

 

Stock ECU, ARAP bin as a base, but we used the impala SS timing table. Adjusted for the 30# injectors, and started to play with the PE. I have a wideband on the car, Idle was a little rich, but WOT was stoich.

-Jim

 

I probably could have gotten there with more tuning, and gears. The car felt like it had more in it, but I came into some extra cash and went for the AFR's. Next purchase will be a rear. With the 28's and 3.27 I was going through the traps @ 5300 in third.

 

.6 you could have picked up with tuning? I really doubt that, don't see any tpi car making power upstairs like a single plane intake.

 

It's not just tuning, the car went through the traps @5300 in third. It still has the 3.27 rear and I run 28" tall tires, it needs more gear. The car also has a HSR, not tpi on top.

-Jim

 

60' was only 1.8 too, never could get any better. Once I make my mind up on what transmission is going to go into the car it will get a better converter.