What flywheel should i use? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

my67c20 · 10-10-2009, 10:49 AM

I have a 383 stroker internally balanced that i am hooking up to a SM465 granny. Engine guy says i can run a standard 350 flywheel. Bought the clutch combo pack off LMC but still need a flywheel. Went out and counted the teeth and it has 185 teeth and is 14 1/8" in diameter. When i search all i find is 160 or 150ish tooth counts. What do i need? Will i need a starter to match? Thank

my67c20 · 10-11-2009, 01:18 PM

Anybody? Just want to make sure i don't buy the wrong thing

Old Yeller 1970 · 10-11-2009, 06:19 PM

My memory is a little fuzzy here since it's been a few years since I did my engine build but here is what I did. My truck had the original 11" or 12" flywheel, clutch and pressure plate. I also had a weak starter that I did not plan on reusing. In order to save some weight and make things safer I went back with a lightened '70 model Corvette flywheel. I bought a 10" clutch and pressure plate to match from Ram and installed a universal gear reduction drive starter. The flywheel was forged or whatever but the main thing being that it was designed for the higher revs of a modified engine and it must have weighed half of the stock flywheel so it should free up a few HP and be safer compared to the stock one. I think the flywheel was around 168 teeth but I could be off by a few either way. It took some time to get the starter shimmed just right but it works great.

I'll look back through my records and see if I can find something more definitive.

10-10-2009, 10:49 AM	#1
my67c20 Registered User Join Date: Jun 2002 Location: Tucson AZ by way of WI & CA Posts: 510	What flywheel should i use? I have a 383 stroker internally balanced that i am hooking up to a SM465 granny. Engine guy says i can run a standard 350 flywheel. Bought the clutch combo pack off LMC but still need a flywheel. Went out and counted the teeth and it has 185 teeth and is 14 1/8" in diameter. When i search all i find is 160 or 150ish tooth counts. What do i need? Will i need a starter to match? Thank

10-11-2009, 01:18 PM	#2
my67c20 Registered User Join Date: Jun 2002 Location: Tucson AZ by way of WI & CA Posts: 510	Re: What flywheel should i use? Anybody? Just want to make sure i don't buy the wrong thing

10-11-2009, 06:19 PM	#3
Old Yeller 1970 DON'T TREAD ON ME Join Date: May 2005 Location: Crosby County, TX Posts: 989	Re: What flywheel should i use? My memory is a little fuzzy here since it's been a few years since I did my engine build but here is what I did. My truck had the original 11" or 12" flywheel, clutch and pressure plate. I also had a weak starter that I did not plan on reusing. In order to save some weight and make things safer I went back with a lightened '70 model Corvette flywheel. I bought a 10" clutch and pressure plate to match from Ram and installed a universal gear reduction drive starter. The flywheel was forged or whatever but the main thing being that it was designed for the higher revs of a modified engine and it must have weighed half of the stock flywheel so it should free up a few HP and be safer compared to the stock one. I think the flywheel was around 168 teeth but I could be off by a few either way. It took some time to get the starter shimmed just right but it works great. I'll look back through my records and see if I can find something more definitive. __________________ Old Yeller



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