need an estimate on how much horsepower would a 1986 trans am have with a completely rebuilt 307 small block chevy,bored .30 over-with rocker rollers,over sized cam and lifters,eldelbrock high rise intake,850cfc eldelbrock thunder series carburetor w/2inch high rise plate,new true dual exhaust

 

250hp maybe at the engine

PS an 850 carb is great for a 383 stroker or larger, a 650 would be great for that motor.

 

Is this a 305 bored?which intake?the carb is too big, what are the cam specs?These are the things we need to know to give a ROUGH IDEA.

 

thanks for the info ,ill change the 850 to a 650 carb

 

no the people im getting the car from took the motor from a 1970 chevelle and rebuilt it,not sure on the cam specs. the guy just told me it has an over sized cam and lifters, every thing in the motor is high performance from jegs and summit

 

307 came out of oldsmobiles, some chevies etc i believe in the 70s& 80s. I also doubt you need a 2" spacer under the carb either. Hooker 1 3/4" header on this motor as well? That's a bit overkill as well, but that carb and headers would work great on a much larger combo. Also i'd get a 650 double pumper over another edelbrock carb any day of the week.

 

thanks for the info,ill keep the suggestions in mind

 

Iwould guess 270 if your lucky.

 

had it dyno tested today it has 358 horsepower

 

at the rear wheels?

 

yes at the rear wheels

 

i do not believe that a 307 motor would put down 358 horsepower at the rear wheels ever N/A.

 

this isnt a stock engine ,this engine was built to run