P. A. Schilke
Well-Known Member
- First Name
- Phil
- Joined
- Apr 3, 2019
- Threads
- 149
- Messages
- 7,083
- Reaction score
- 37,188
- Location
- GV Arizona
- Vehicle(s)
- 2019 Ranger FX4 Lariat 4x4, 2020 Lincoln Nautilus, 2005 Alfa Motorhome
- Occupation
- Engineer Retired
- Vehicle Showcase
- 1
Deal with the Corvette goes back a few years. I have a good friend that was working for Pratt and Miller who fielded the Corvette IMSA endurance race car...two car effort #3 and #4. Yellow... P&M built a new chassis for the racing series. At the last minute after the car was heading to Daytona for the 24 hour race, GM decided to use the new flat plane crankshaft motor. So the P&M crew headed to Daytona without any real testing. The #4 car failed during the first half of the race and the #3 limped along, finishing out of the points and well down the finishing ladder. Post race the team found a multitude of cracking and failures with the chassis. This new chassis had previous tested for over a 24 hour race test. No problems so the complete chassis required beefing up before the 12 hour Sebring race...my buddy and others were on 16hour/7day a week fabrication of new chassis parts. As my buddy said...WTF was GM thinking to do something like this at the last minute. Next year the team was ready and did well. So this motor was race proven in the long term but appears not ready in production form for prime time...I had a Caprice interceptor that had the LT1 motor in it. We all kept having transmission problems and failures. I asked the mechanic to test drive it at high speed and see what I meant. He couldn't duplicate the problem ( his high speed was 65-70 mph) I said hop in let's go for a ride! Got onto the on ramp for I65, waited for a clear patch with no traffic, hit the lights and siren and promptly got up to 80 mph + and the car was shaking so bad that the mechanic was using curse words like it was a native language ? at 90 the car was shaking so bad it shook both my microphones out of their holders and my computer screen looked like a 70s TV with bad horizontal hold! So he tells me to maintain throttle and gently hold the brake, the vibrations immediately went away, it was the torque converter, Chevy used the Hi performance motor with a standard torque converter, they rebuilt my transmission and installed a torque converter out of a pickup truck (new parts) and the vibrations never came back, sane fix cured all of our fleet problems in that model year!
After that my car ran so smooth that i hit 146 and didn't realize it until.i looked down, they removed the governor!
BTW: Last I saw was that the Accessory drive belt can not be changed without dropping the engine/trans out of the car....can you say $$$$$!
Never liked Plastic Pigs....and Still don't.
Best,
Phil
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