# 3838 Vinson / Allison Corvette

[robfrey]

Yes sir.

[robfrey]

Here a quick video we made on the Dyno.

http://youtu.be/iv8NqJN4OtU

[Rex Schimmer]

Rob,
Pretty awesome!!! I like the new "tail fins" also maybe they will help keep it straight as you go past 260!!!

Rex

[jl222]

Here a quick video we made on the Dyno.

http://youtu.be/iv8NqJN4OtU

  Rob...sounds like gangbusters and way more than 1000 hp, must have had a bunch of tire slip.
  Tires don't look like LSR.

  Was that black smoke at end of video, from tires or engine?
  
   Dyno for the 222 Camaro had 2 rollers which helped with tire slip but we still let a bunch of air out of tires
 chinched it down with come-alongs, chains and straps and blew the tires back up to 50lbs.

  We also have 3000+ lbs on rear tires.

      Good luck JL222

  

[robfrey]

Tires are drag radials for Ohio mile and Dyno.
Not sure about that black smoke. The rapid change of rpm may have had something to do with the temp rich condition. From my experience this combo was probably making a bit over 1300rwhp at the higher rpms. That would be about 1700 at the crankshaft.
We went 251 last year with 880hp at crank (probably less 675rwhp). Entered mile 5 at 5900 rpm and gained 0 rpm through the last mile.

[robfrey]

Figured out that the silicone tube connecting the output of the inter cooler to the charge pipe had blown half way off and that is why it only made 7psi of boost which was actually a blessing. Anymore power would have been a very bad thing.

[Wade_Owens]

Very interesting. build. Thanks for all the info!

Wade

[jl222]

Figured out that the silicone tube connecting the output of the inter cooler to the charge pipe had blown half way off and that is why it only made 7psi of boost which was actually a blessing. Anymore power would have been a very bad thing.

 Impressive for 7psi of boost way more hp to come.

 We have had the same trouble in the past, blowing off silcon connectors,We welded tabs on tubes and connected it with 1/4'' solid aluminum tubing which we smashed on the ends to make flat and drill holes and wouldn't you know it the one we didn't do coming from blower let lose on the dyno and broke the coil lead to distributor off. We could see the metal in the coil. I epoxied it back on to continue on dyno and it's still in use :-
 Drilled hole in blower and tapped hole for bolt and nut + added brace from tube connectors to blower mount.

         JL222

[robfrey]

Just a quick update on this car.
Ran at Speedweek 2013.
Tried wider tires, underbody strakes, and spoiler with maximum size spill plates. Ended up keeping only the spoiler and spill plates. That along with 21 psi of boost yielded us 276mph, 278 exit. This qualified us for the 263mph record.
On the record return run, trans did not lock up the torque converter or let us shift into overdrive consequently only ran 240 and failed to back her up.
It appears that the converter actually failed to lock up on the qualifying pass also as I had turned the engine fast enough to be going 305mph. I thought I was spinning the tires but it appears the converter was slipping during the run.
I believe the reason the car did not go into overdrive is that the converter clutch debris contaminated the trans fluid enough to cause the overdrive electric solenoid valve to stick.

[SPARKY]

Rob how would that combo do with NO converter?

[robfrey]

I don't think they make converter elimininator for the 4L80e but then we would need a push off.

[Freud]

Rob......Thanks for stopping by the palace.

I was glad the guards didn't challenge you at the gate.

Wish that 'vet had treated you a little better.

It was my pleasure.

FREUD

[robfrey]

Here is one of the runs from 2013 Speedweek.

http://youtu.be/FiYoaQ_UzM8

[racefanwfo]

Why is the video private.

[Peter Jack]

Rob, the video comes up as private and requires a sign in. Some of us don't join any of these other sites. 

Pete