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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: Thowell on January 08, 2009, 01:37:53 am

Title: 1987 chevy block stats? need to know for compatibility
Post by: Thowell on January 08, 2009, 01:37:53 am

i am wanting to either buy an extra block or go for the extensive rebuild. and so really i was wanting to know if the four bolt main blocks would work? also the 2.02 heads. i ask because those are the ones that im seeing alot of on craigslist here in kansas city. so just give me your thoughts on how i should go about it. also i was wanting to know whats better. to buy a posi carrier or a locker? i ask because its better to learn before hand than to go pay and have it done and then realize i got suckered. thanks for the advice

Title: Re: 1987 chevy block stats? need to know for compatibility
Post by: VileZambonie on January 08, 2009, 04:52:38 am

4 bolt mains are for heavy duty use and will work fine.

Personally I prefer a lsd over a locker.

Title: Re: 1987 chevy block stats? need to know for compatibility
Post by: Captkaos on January 08, 2009, 05:20:16 pm

For a street driven vehicle, 2 bolts are fine and 4 bolts most people overprice

I don't like lockers unless it is on a Jeep for offroad.

Title: Re: 1987 chevy block stats? need to know for compatibility
Post by: Thowell on January 09, 2009, 08:42:35 pm

well i mean wouldnt a locker be technically true posi? and should i go buy a new locker or posi carrier or search for someone with a used one?

Title: Re: 1987 chevy block stats? need to know for compatibility
Post by: Captkaos on January 12, 2009, 04:52:57 pm

A Posi is what GM called their limited slip differentials.  A locker locks both axles, so no they are different.