350 flywheel vs. 400 flywheel
10-08-2017, 12:30 PM
#61
Safety Car
I guess that makes me an idiot.
Absolutely effortless destruction of tires and gobs of torque.......nothing like that belongs in a late model C3 right?
The idea of a 383 that makes no less than 425ft pds of torque anywhre between 2500RPM to 6000RPM.....peaks out at 468ft pds and ultimately makes 456HP......that's not for you?
Are you telling me that the 195HP L48 or the equally weak L82 PERFORMANCE version that actually got a CODE printed on the hood that today only signals less power under the hood than typical economy cars have today is enough for your Corvette?
If so........it may be time to reconsider why you bought this car in the first place.......there are more economical and comfortable ways to go that slow on the street.
Absolutely effortless destruction of tires and gobs of torque.......nothing like that belongs in a late model C3 right?
The idea of a 383 that makes no less than 425ft pds of torque anywhre between 2500RPM to 6000RPM.....peaks out at 468ft pds and ultimately makes 456HP......that's not for you?
Are you telling me that the 195HP L48 or the equally weak L82 PERFORMANCE version that actually got a CODE printed on the hood that today only signals less power under the hood than typical economy cars have today is enough for your Corvette?
If so........it may be time to reconsider why you bought this car in the first place.......there are more economical and comfortable ways to go that slow on the street.
He hasn't posted on here in over 4 years.
10-09-2017, 02:12 PM
#62
........I missed that...........hopefully it hasn't taken that long for him to wake up to the reality of it.
10-09-2017, 02:44 PM
#63
Safety Car
10-10-2017, 02:40 PM
#64
Racer
I know this is an old thread but since it has been somewhat revived I will ask a question. I thought the 400 was plagued with overheating issues due to siamese cylinders? That combined with the airflow problems of the C3 engine compartment is this a big problem with these engines.
10-10-2017, 02:58 PM
#65
I agree that only an idiot would put a 350 flywheel on a 400 sbc, however only an idiot would put a 400 in a corvette in the first place, it truly does not belong there. I have looked through the inspection area of tranny and there are no weights, so I have a 350 flywheel. The 400 motor does have the correct harmonic balancer. It would seem that someone blew up the 350 motor and had a 400 and just threw it in. Its a 70-73 block, so 400's from that era did not usually come out of a manual vehicle (usually caprices, or wagons, and trucks) so the guy either didn't give it much thought or just pieced together what he had. the car absolutely has ALOT of vibration (so much so that the tranny mount bracket has to be re-welded to the frame. To top it off, the guy I bought it from had the bell housing replaced b/c it cracked (DUH), why doesn't anyone ever try to find the reason for something to happen. Additionally, it did not dawn on the mechanic who put the new bell housing on to figure this out either, and more annoying ,,, HE WAS THERE ALREADY and could have changed it!!. With all this idiocy going on, I was just checking to see if there were some other reason, like the 400 flywheel will not fit in the bell housing or something else? or maybe its just a bunch of people who shouldnt be working on cars or have tools?
now are you sure its not an internal balanced 400?,what type of front harmonic balancer is on the front?
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Captain bob (10-10-2017)
10-10-2017, 10:01 PM
#66
Racer
You are still in a pickle, you don't know what crank is in there. You need to find out. A 400 balancer can be modified to make it neutral, you could also have a 377 which would be a 400 block with a 350 crank, you really need to know what is inside the motor. Just putting a 400 flywheel on it I fear is not going to solve your problem. 
