i have a t5 from the car, and a stock clutch (from the 91 camaro). i have an older sbc to put in, with a two piece rear main seal. the fly wheel that wason the motor doesnt work, cause its too big, was hooked up to an old 4 speed, and the fly wheel from the 305 doesnt work cause its a one piece rear main seal. what flywheel do i need? and how much do they run? thanks!

 

Am no pro but i would say get a flywheel from a 82-85 f body. Am sure theres more options, but this is one. 1 Piece RMS is 86+

 

you can do that, or get an after market flywheel. i went with a ram billet steel flywheel. http://www.summitracing.com/parts/RAM-1511/

its kinda pricey, but worth it. any 153 chevy flywheel for a 2peice rear main seal will work, just gotta match it to an ext balanced flywheel if your rotating assembly is externally balanced...

 

I think it's internally balanced. I'm hoping for a cheap one so I can get the car running ASAP. Thanks!

 

Yup, 83 - 85 305 V8 one will bolt right up. You'll find there are 2 choices; 22 lb and 16 lb for the base-model LG4 and the high-perf L69 respectively. You'll probably want the light one.

Make sure your block has the right bolt hole for the starter required to use the small flywheel, BEFORE you install it in the car. Do a search on this forum for my userID and the words "starter bolt hole" and you'll learn why.

 

Keep in mind chevy uses the internal balance crank but have external balance flywheel. Unless theres an aftermarket crank per say "Eagles" then that does not need a weight. I learned this the hard way

 

Do some starters have bolt holes for both types of flywheels? Or is it all in the block? This motor used to be mated to a 4 speed manual. I'm hoping I'll be able to run a 153 with a
Out a problem. If it doesn't have the holes for it am I SOL for making these work?

 

Yes some starters have both sets of bolt holes. But that won't do much good if the BLOCK lacks holes.

All stock SBCs are INTERNALLY balanced except for the 400. It is THE ONLY one that is "externally" balanced. However the 86-up INTERNALLY balanced 305/350 have the rearmost bit of INTERNAL balance weight, which used to be part of the flywheel flange on the crank but can't be there any more, mounted to the flywheel. Just because this little bit of weight LOOKS "external" to the untrained naked eye DOES NOT make these motors "externally" balanced.

But none of that is an issue here, so disregard it for the matter at hand. Your motor is internally balanced like ALL SBCs other than the 400, and uses a neutral-balance flywheel.

Your more pressing concern is whether your block has the starter bolt hole you'll be needing, and if not, to have it put there BEFORE the motor goes into the car.

 

Just put that 3rd bolt hole in there and the angels will sing and all will be well in the world. Just take care of it.

 

Here we go again...

 

Is this right?

 

absolutely

 

Its not a "here we go again"

Ive read over and over the misunderstanding of this in other threads. Yes sbc are internal balance, only 400 sbc are external. But you cant say all sbc use a nuetral flywheel or flexplate ( no weights ), only from experience i know for a fact a 96 vortec motor had a weighted flexplate.

I only stated this incase for some odd reason there is a non oem crank in the motor. Scat uses the weighted flywheel/flexplate with there internal crank balance, Eagle uses a non weighted one with there cranks

 

It's a L82 with a cam as far as I know, my buddy has a spec sheet gotta find it.

So all I need is a straight bolt 153 tooth flywheel starter?

 

Since he's going 2-piece RMS, there is no reason to bring it up in this thread.

 

Yes that has the correct hole. You're in luck.



Here's a 400 I drilled it in. Blocks from before about 78 or so don't have it; a few have a different one, farther from the crank, where the 2 cyan lines intersect, but that one won't work for what you need (even if it was there) because a bolt that would go through the starter and into that hole, would have to go RIGHT THROUGH THE MIDDLE of the starter drive, because the starter has to be 5/8" closer to the crank for the smaller flywheel, than it did for the larger one.

 

Awesome. Now my next question, will the stock starter from the 305 for my motor?

 

since youre keeping the stock style 153 tooth flywheel, and your block has the holes for it, yes you can reuse the starter from the 305.

 

Advanced auto has a 153 tooth fly wheel for an 1984 Camaro. This will work correct? Before I buy it. Lol.

 

yes it will.

 

Thanks. Let's hope these morons can give me the correct one