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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: 87 Wrangler on November 02, 2014, 07:33:03 pm

Title: Is the block the same on 1986 carb 350 and 1987 TBI 350?
Post by: 87 Wrangler on November 02, 2014, 07:33:03 pm

I am going to pick up an 86 c20 parts truck tomorrow, has a carb 350 with only 150000km on it. Looking to use the short block to build my vortec 350 TBI motor for my 87 r20. Just unsure if the short block /bottom end is the same and can be used for a fuely. Heads and intake are obviously different but don't matter in this case as I'm pulling them anyway. Any ideas info guys? Things got a bull low 4spd man too that I'm just gonna pull and sell.

Title: Re: Is the block the same on 1986 carb 350 and 1987 TBI 350?
Post by: jaredts on November 02, 2014, 08:06:13 pm

That block should do everything you need.  You'll have to get a block off plate if you want to take the mechanical fuel pump off.

Title: Re: Is the block the same on 1986 carb 350 and 1987 TBI 350?
Post by: 87 Wrangler on November 03, 2014, 01:49:50 am

Great thanks, I was pretty sure it would work but was specifically wondering about the pump like you said. Didn't know you could just plate it off. Should be a 4 bolt main block, 8600 Gvwr truck I believe

Title: Re: Is the block the same on 1986 carb 350 and 1987 TBI 350?
Post by: 78BIG-TEN on November 15, 2014, 10:59:22 am

Only other ting I would check is at the rear main seal,make sure they are the same kind

Title: Re: Is the block the same on 1986 carb 350 and 1987 TBI 350?
Post by: 87 Wrangler on November 15, 2014, 04:58:24 pm

Ok thanks il have a look