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post #1 of (permalink) Old 08-16-2000, 12:54 AM
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Chevy v-6

Could anyone tell me where I could find some info on the big v-6s Chevy had in the mid to late '60s. I think they were around 300 or so ci. I was also wondering about parts being available.
Thanks,
Bob

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post #2 of (permalink) Old 08-16-2000, 01:28 AM
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Re: Chevy v-6

Well, I had to check on my Perfect Circle engine parts catalog to find some information. From 1960 - 1972 GMC truck used a 351 cubic inch V6 "C", "E", "M", bore of 4.5625" engine in there trucks (series 1000, 1500, 2000, 2500, 4000, 5000, 5500, 5600, 5700, 6500, 6600, 6700, 7500, 8500) I've driven a couple trucks with that V6, TORQUE!!!!
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post #3 of (permalink) Old 08-16-2000, 02:21 AM
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Re: Chevy v-6

Dave, this is in a 3/4 GMC p/u. I didn't think it was that many cubes but I did think when I opened the hood it was a v-8. Any idea if parts are still available.

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post #4 of (permalink) Old 08-16-2000, 10:59 AM
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Re: Chevy v-6

There is also a 305 V6 from GMC 1960 - 1975. The bore of the 305 V6 is 4.250". As for parts, yes both the 351 V6 and 305 V6 have parts available. For most all GM engines, there are parts available.

As for V8 GMC options there are a few, 283 57-67, 307 68-73, 327 62-68, 350 started in 69, 396/402 66-72, were the most common.
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post #5 of (permalink) Old 08-16-2000, 04:26 PM
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Re: Chevy v-6

Dave, it's the v-6 alright. It's just when I opened the hood I didn't look close and just assumed it was a v-8 from it's size. Any idea on how to tell which v-6 it is.
Bob

post #6 of (permalink) Old 08-16-2000, 09:53 PM
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Re: Chevy v-6

I'll have to admit, I really don't know a way to tell the difference between the 305 V6 and 351 V6. I could only guess that the odd's favor it's a 305 V6 in the pickup. The odd's favor the 351 V6 was usually a 2 ton and bigger truck engine. The odds also favor the parts prices for either V6 will be very expensive! It's most likely less expensive to convert to a newer GM engine, either a newer V6 or V8. If you consider there are lots of good used 4.3 liter V6 engines. It's not very expensive to convert a 4.3 liter V6 engine to operate with non-computer controlled carburetor and distributor. Heck, there are some very affordable performance parts for the 4.3 liter V6.

I guess it just depends on the plans for the old truck the 305 or 351 V6 is in. If there is a need to keep the old truck original, then I could understand spending the extra money to get the original V6 running. If the old truck just needs to get moving again the least expensive route might be a used 4.3 liter V6 engine. You will have to decide.
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post #7 of (permalink) Old 08-17-2000, 09:58 AM
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Re: Chevy v-6

Ok, you asked for it. Here is everything you ever wanted to know about the GMC V-6s.

http://www.favorites.com/~jolly/305V6.htm

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'87 Suburban 4X4, 350, 700R4
'88 Chevy PU, 4X4, 350, 700R4
post #8 of (permalink) Old 08-17-2000, 11:31 AM
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Re: Chevy v-6

Thank-you Tim.

That was a very good site to post!
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post #9 of (permalink) Old 08-18-2000, 02:49 AM
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Re: Chevy v-6

That's freaking cool!!!!! So what are you planning on doing with one of those monsters? We'd all be interested.

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post #10 of (permalink) Old 08-18-2000, 09:57 AM
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Re: Chevy v-6

<font color=purple>I'd love to have one of the big inch GMC V-6's in a mud racer. Go to Indy & destroy the 4&6 cylinder class!! Yup, those big V-6's were all the rage - they even made a supercharged version that found its way into drag cars in the "old" days (that's why the Roots style blowers are frequently called GMC - that's what they were originally made for). BTW, I had a '56 GMC that I converted to look like a '56 Chevy (50's GMC's had really ugly grills). That truck came stock with a tach and - get this - a 348" Chevy Big-block (W style).</font color=purple>

TEX

http://sites.netscape.net/gumboracing


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