The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 55.2-59 Flywheel and Starter Combination GMC

mr48chev · 04-02-2021, 01:18 AM

I'm not finding a 288 engine in any year of GMC exactly what do you have?

I'm finding a 55 only Pontiac engine that is a 287 that is actually 287.2 if you get down to the nitty gritty and that is one year only.

According to this 55/57 Pontiac flywheels should be the same but an hour's searching does not bring up one ring gear for a 55/57 Pontiac to be able to know how many teeth one has.

That is the trouble with odd ball stuff that most guys threw in the scrap pile years ago, there are no parts available for them unless you pay an absolute premium and even less information.

The Best I can suggest is contact Wallace racing and see what they have to say. Or go on the Pontiac Registry and tell them you have a 55 Pontiac with a stick and ask what flywheel will replace your flywheel and what fits and what ever you do don't tell those guys you put the engine in a truck.

I have very honestly spent the past hour searching for a 55/57 Pontiac ring gear and none exist to even get you a part number or a tooth count. You may have replaced your six with 700 lbs of scrap iron.

04-02-2021, 01:18 AM	#7
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,306	Re: Flywheel and Starter Combination GMC I'm not finding a 288 engine in any year of GMC exactly what do you have? I'm finding a 55 only Pontiac engine that is a 287 that is actually 287.2 if you get down to the nitty gritty and that is one year only. According to this 55/57 Pontiac flywheels should be the same but an hour's searching does not bring up one ring gear for a 55/57 Pontiac to be able to know how many teeth one has. That is the trouble with odd ball stuff that most guys threw in the scrap pile years ago, there are no parts available for them unless you pay an absolute premium and even less information. The Best I can suggest is contact Wallace racing and see what they have to say. Or go on the Pontiac Registry and tell them you have a 55 Pontiac with a stick and ask what flywheel will replace your flywheel and what fits and what ever you do don't tell those guys you put the engine in a truck. I have very honestly spent the past hour searching for a 55/57 Pontiac ring gear and none exist to even get you a part number or a tooth count. You may have replaced your six with 700 lbs of scrap iron. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around. Last edited by mr48chev; 04-02-2021 at 01:49 AM.