What do you think it could be?
 

So, looking for some opinions on this situation. I had the race car out to the track finally on Friday for some check out passes before the regular weekend races. I pull into the water box and do my burn out and the car sounds like its laboring a bit as it usually it has a nice high pitch scream…ok. So I go ahead and stage up, footbrake it to my normal 4000 rpm and the light turns green and I swap feet matting the gas expecting to see the sky but no…the rpm on the tach goes up but the car just drives away like its pulling away from a stop sign. I drove easy down the track and when I shifted it seemed firm and crisp as normal. I have some ideas but I am looking for opinions to confirm my suspicions. For reference it’s a 10.40 bracket car with a 625 hp SBF, C4 with an 8” converter with a 4500 stall. Trans was freshened in ’09 and the TC was flushed out at the same time. Fluid level and color are normal with no burnt smell. Thoughts?

I don't know if this needs to go to the bracket section or not...

Re: What do you think it could be?
 

sounds like something went sour in the engine. Spun bearings or possibly a broken rocker arm, valve springs. I would pull the filter and check for metal in the oil.

Re: What do you think it could be?
 

Sounds like a broken sprag.

Re: What do you think it could be?
 

Sprag in the converter for sure

Re: What do you think it could be?
 

another stating it's the sprag

Re: What do you think it could be?
 

Thanks everyone..That was my though and it seems to be the general consensus. Guess I'll pull it out...

Lots of experience around here, thanks again for letting me pick your brains.

Re: What do you think it could be?
 

sprag

Re: What do you think it could be?
 

Put a stick in it Joe!

Re: What do you think it could be?
 

Hey Earl, I never thought about that! Got any spare G-Forces laying around?

Re: What do you think it could be?
 

Just to make you feel better informed one more time its the sprag.. just went through the same thing two weeks ago car acted identical to what you are saying.