It has been a long time coming but I was finally able to get my 1986 vette swap with the 427 completed over the winter. For those who do not know the car has not run since 2014 and this winter I got it mostly completed. The basics of my combination are listed below:
-1986 vette
-Full street interior and car is at full weight of 3473 LBS as raced on friday night with the driver
-427 LS7 with a stock bottom end but has a LS7X texas speed cam 248/256 @ .050 with .624/612 lift
-Melrose headers
-2000 camaro computer running the engine and 4L60E transmission with 4500 stall and lockup
-3" dual exhaust system
-Ford 9 inch rear conversion with 3.73 gears
-275 drag radials
-4" maf sensor
-Engine makes around 650 to 700 horsepower
-Full cage certified to 8.5 ET's tucked nicly in the car so you can not really even see it unless you look

I have a tune mostly dialed in, there may be some additional power hiding in there but not a lot

The car looks like a sleeper, looks like any stock C4 corvette and at the strip you can barly hear it run compared to most of the cars there.

I dynoed the car on a Mustang dyno in the unlocked condition with a conserative tune (Rich and pretty conserative timing and the car made 510 RWHP at around 6900 RPM but it was still climbing and I lifted to make sure I kept all the parts inside the engine. Dyno sheets attached.

It was in this condition that I ran the car on Friday night and the car ran well, the DA was 1700 ft at it went a 10.22 ET at 131 MPH. (I was hoping for a 9 but I can live with what I have)
Car was very conststant I ran 5 times at it ran between 10.22 to as slow as 10.25. It also pulls a nice 6" wheely at the launch.

Run attached:

 

Awesome work and very cool

 

Trap seems about right for the power no?

On that dyno sheet... what's up with the weird hump towards the top. Little tire slip or TC action?

 

Good time and speed considering the 3500 lb weight.

 

Ya, you're gonna surprise allot of "ponies", "snakes" and "scat" with that thing!!

 

The hump is when you roll into the throttle with a high stall torque convertor. The engine flashes to the stall speed and you get that wierd hump.

 

That's an awesome build, but a 4L60? What a shame. I don't think those can even take the 7000rpm.an ls7 can do.

That build deserves a TR6060, lol. Sweet car other than that.

 

awesome 60 ft and I love the color of your car

Remind me. Is that a solid rear axle?

 

Yes it is a solid rear axle.

 

gotcha. Looks very fun. Those LS7s NA pull so nicely. They (to me) feel like a centrifugal unit on a smaller engine with how they deliver power everywhere.

And I do agree. I think there is a little more left in the tune.

 

Thanks for the comments.

 

Nice build.

Those are good times.


Can you post a pic (or two) of the engine?

 

 

Lot of work in the engine compartment.