[327amc]

I have an 86' 305 that I need to convert over to manual.

What is currently on the 305 is a flexplate with a counterweight on it.

I am changing over to a clutch application, so I need to change the motor over to a flywheel.
How would I balance a new fly wheel to this application? Or can one be purchased readily?

Thanks in advance

 

[327amc]

Im assuming I just order a manual trans flywheel for that same engine year, and I would be ok? Dont want to get it all together and screw it up with wrong flywheel balance.

 

[ericnova72]

Yes, the stock replacement flywheel for an '86-up 1-piece rear main seal engine will balance out the same as the flexplate...it'll have that offset weight already built into it.

When Chevrolet went to the 1-piece seal design, that big round flange left no place for the offset shape that is on the older 2-piece seal crank flange....so they had to move that amount of weight to the flywheel/flexplate. All 1-piece seal flywheel/flexplates are balanced the same.

Only exception would be custom fully internally balanced aftermarket race 1-piece seal crankshafts....not stock replacement parts.

 

[lmsport]

the 4.3 is different balance but they look the same.

 

[327amc]

Thank you. Great info.
How might I aquire a 153 tooth flywheel for this motor? The larger 168tooth wont clear my bellhousing adapter.

 

[2old2fast]

There is a balance plate available for 2-piece RMS , that allows you to use a nuetral balance flywheel On external bal SBC , it bolts between the flywheel & the crank flange , I don't know if its available for the 1-piece rms

 

[lmsport]

Thank you. Great info.
How might I aquire a 153 tooth flywheel for this motor? The larger 168tooth wont clear my bellhousing adapter.

get wheel for 91 Trans Am

 

[327amc]

get wheel for 91 Trans Am

CHEVROLET	CAMARO	1986-1992
PONTIAC	FIREBIRD	1986-1992

BOOM! Very nice! Thank you guys.