Jammin'Trey

Ok so i have a 168t flex plate with no counterweight on it, my stock 305 has a 153 t with a counter weight on it. I put a 355 into my 89 RS camaro and had to bu a diffrent starter for the bigger flexplate. But the starter doesnt throw out the gear far eneough to hit the flex plate teeth completly, it hits maybe 1/4 of the tooth on flexplate.

I have rounded off a couple teeth on the flexplate and my car is not driveable what should I do?

I beleive this motor is internally balanced but im not sure what should i look for? On my 305 the flexplate bolted to a perfectly round crank, on this 355 it has a hump on the end. I assume this is a built in counter weight?

If it matters i have a 2 piece rear main seal. and 3 holes for the starter to mount.

Guest

did the starter come with shims?? now it sounds like u need a new flywheel

Jammin'Trey

yea, starter came with shims but thats not what im talking about. I think I need a 153 tooth FLEXPLATE internally balanced (because I have a 2 piece rear main sea??)

Apeiron

It would have been cheaper to get the 153 tooth flexplate.

That's usually a shimming problem.

Replace the flexplate and check your starter clearance.

It's not a built-in counterweight, it's just how the crank is.

Buy a flexplate of either diameter for any stock 2 piece RMS engine except a 400, and use it with the appropriate correctly-shimmed starter.

Jammin'Trey

So internally or externally balanced???? does the flexplate i need have a counterbalance weight on it or not?

Jammin'Trey

Im starting to think the flexplate may be on backwards, would this cause my starter to only hit 1/4 of the flexplate teeth. I just need it to reach out a little more when it enguages. This is really erking me to no end. This motor swap has been a bitch.

Jammin'Trey

anyone? apeiron?

Apeiron

Forget about balance. The word you want to care about is "stock".

If the flexplate was on backwards, the torque converter wouldn't bolt to it.

Jammin'Trey

its not a stock motor!!!!! whatever. the motors not from a camaro. AHHHH!

Apeiron

It doesn't make a lick of difference if its a stock motor or not. Pick a random application that could have come with a 2 piece RMS small block, and get a stock flexplate for it. You've already got both starters, so there's no way you can get it wrong.