GMC 351 V6 "M" Engine Parts

[davbell22602]

Does anybody where to get parts for these engines? I need a oil pan for 351 V6 M. Do they have the same bolt pattern as the chevy 305/350 v8 oil pan?

[PanelDeland]

You might ask member coyoterun.He is a lover of the V12 version of these engines whhich are just a doubled one.He may have a source he would share.Or maybe a crossover parts reference.

[davbell22602]

Originally Posted by PanelDeland

You might ask member coyoterun.He is a lover of the V12 version of these engines whhich are just a doubled one.He may have a source he would share.Or maybe a crossover parts reference.

Couldnt find that member.

[100%Chevy]

The only oil pan that will fit is one from another GMC,v/6 engine.
Mike./

[davbell22602]

Originally Posted by 100%Chevy

The only oil pan that will fit is one from another GMC,v/6 engine.
Mike./

Who sells them new or used?

[MusicMan70]

Craigslist, Ebay, Partsboard here...are sources

[davbell22602]

Originally Posted by MusicMan70

Craigslist, Ebay, Partsboard here...are sources

Craigslist and ebay dont anything for GMC V6.

[GASoline71]

No oil pan... but there's quite a few parts for 305 and 351 V-6's on ebay...

http://www.ebay.com/sch/i.html?_trks...51+V6&_sacat=0

Froma little digging I did on Google... it sounds like a pan for a 305 V-6 might fit.

Gary

[oldspowered67C10]

Some parts are available for these engines new but very few, we recently sourced a fuel pump for one at the local parts distributor(star auto parts) but stuff like oil pan will have to be sourced used, have to hunt around.

[1972RedNeck]

Originally Posted by GASoline71

From a little digging I did on Google... it sounds like a pan for a 305 BIG BLOCK V-6 might fit.

The V6 has a skirted block like the Ford FE. It has no dent where it goes over the crank.

[MusicMan70]

I received this info below about the oil pans, from one of the very knowledgeable Guys; Lewis Matkin, from the 6066 GMC website. Parts CAN be found on Craigslist; not always in your region or by direct order, but I have purchased many parts from the CL including my 401M.

http://www.adhuntr.com/ used to be Allofcraigs

http://www.mecanicapedrosa.com/


all GMC V6 engines carry the same pan configuration. The only
difference is the depth of the pan. The 305 pickup engine has a shallow oil
pan and may not allow the oil-driven govenor spinner asm to be installed on
the pump. It is a 5-qt. pan. However, if he finds one from a
305-351-401-379-432-478 out of a 4000 series or larger truck it should work.
Most of these pans are at least 8-qt. capacity and will bolt up to any of
these engines


Best of luck with your search, I'll keep my eye out as well.

[davbell22602]

I also need pistons and connecting rods now too. Found broken pieces of a connecting rod and piece of the piston skirt. Thanks to all the replies.

[duallyjams]

351M do show up on CL for sale , it sounds like it would be cheaper to find a used engine.

[davbell22602]

Originally Posted by MusicMan70

I received this info below about the oil pans, from one of the very knowledgeable Guys; Lewis Matkin, from the 6066 GMC website. Parts CAN be found on Craigslist; not always in your region or by direct order, but I have purchased many parts from the CL including my 401M.

http://www.adhuntr.com/ used to be Allofcraigs

http://www.mecanicapedrosa.com/


all GMC V6 engines carry the same pan configuration. The only
difference is the depth of the pan. The 305 pickup engine has a shallow oil
pan and may not allow the oil-driven govenor spinner asm to be installed on
the pump. It is a 5-qt. pan. However, if he finds one from a
305-351-401-379-432-478 out of a 4000 series or larger truck it should work.
Most of these pans are at least 8-qt. capacity and will bolt up to any of
these engines


Best of luck with your search, I'll keep my eye out as well.

Thanks for the 2nd link. I found pistons for the 351 V6 for $36. Emailed them to see if there still available and see if they have the connecting rods also.

[davbell22602]

Can I use 305c, 351c, etc connecting rods in M series engine block. I have a 351 V6 M according to ID tag on the truck. Ill check the castings on the block this week.

[davbell22602]

Does anybody if the medium duty and pickup truck 351 used the same internal parts such as pistons, connecting rods, etc?

[PanelDeland]

Try cayoterun .I knew his nic was spelled funny but r when I posted before.I'm sure he's found a few things for them over the years since he's found enough to run a v12.

[BobS]

A lot of the parts are the same. If you have a 351M, it came from a medium duty truck, 351E's were installed in light trucks 66-69. The "M" and "E" engines use a different intake and heads with bigger ports for increased air flow, the 351C uses smaller ports like the 305E. "C" and "M" engines (medium duty) use pistons with 4 rings instead of 3. There are plenty of parts for these engines around, it's just a matter of finding them.

Bob

[mgkgmc]

Here is a truck in Phoenix getting parted that has a 305 v6.
http://phoenix.craigslist.org/nph/pts/3417200421.html

[davbell22602]

Originally Posted by BobS

A lot of the parts are the same. If you have a 351M, it came from a medium duty truck, 351E's were installed in light trucks 66-69. The "M" and "E" engines use a different intake and heads with bigger ports for increased air flow, the 351C uses smaller ports like the 305E. "C" and "M" engines (medium duty) use pistons with 4 rings instead of 3. There are plenty of parts for these engines around, it's just a matter of finding them.

Bob

I was told by cayoterun that they were the same as far as he knew. He said the immigration motors where different cause they used propane or natural gas. I couldnt find anything on jolleys site about a 4 ring piston.

[jbgroby]

Originally Posted by davbell22602

Does anybody where to get parts for these engines? I need a oil pan for 351 V6 M. Do they have the same bolt pattern as the chevy 305/350 v8 oil pan?

Dav,

First join Jolly's 6066 Yahoo group it is dedicated to the V-6 in all its forms. Next when searching ebay punch in this search string 196* GMC anything listed for 1960-1969 GMC should pop up. The * serves as a wild card feature and will encompass and include all year items.

There is a misconception that the V-12 was just 2 v-6 welded together, nit true. Here is a link to the national club, read to your hearts content.

http://6066gmcguy.org/

Page on the V-12 engines

http://6066gmcguy.org/TwinSix.htm


Hopes this helps.

[davbell22602]

Originally Posted by jbgroby

Dav,

First join Jolly's 6066 Yahoo group it is dedicated to the V-6 in all its forms. Next when searching ebay punch in this search string 196* GMC anything listed for 1960-1969 GMC should pop up. The * serves as a wild card feature and will encompass and include all year items.

There is a misconception that the V-12 was just 2 v-6 welded together, nit true. Here is a link to the national club, read to your hearts content.

http://6066gmcguy.org/

Page on the V-12 engines

http://6066gmcguy.org/TwinSix.htm


Hopes this helps.

I already joined the yahoo group and they werent very much help and same with stovebolt since were dealing a medium duty truck. I'm having better luck on here on getting the info I need. I check out the other.

[Littletony]

I do not know if this will help, but I just got a box of mail in. In the box I had a stack of Car Craft mag,s in the December issue there is a write up about the v12. Here is the web site maybe this guy can help find the parts you need.
ThunderV12.com

[davbell22602]

Originally Posted by Littletony

I do not know if this will help, but I just got a box of mail in. In the box I had a stack of Car Craft mag,s in the December issue there is a write up about the v12. Here is the web site maybe this guy can help find the parts you need.
ThunderV12.com

Thanks But looks like all he has is V12 parts.

[Erl]

If I was you I would look for a used engine. The parts off a common 305 V6 will work on your 351. Used engines go for $50 on up to $250. They are easy to find, once you start looking. I designed the HEI upgrade on Jolley's page and would highly recommend it.

ERL