engine mounts

[BKWARDS]

Hello,

new member here. I am removing a 350 and installing a 250 Intg. head engine, (completely rebuilt and balanced) into a 1971 GMC C-10. (I prefer the simplicity of the 6 Cyl. engine.) After all of the problems of the brackets A/C ect.. I am now having problem finding the correct engine mounts. I am including pictures of the mounts that came off the 250, and the two parts of the 350, one in truck. I do not know what mounts to use to install the 250. seeking advice.

Thank You

I hope I am posting this correctly

[boynton]

The motor mounts in your fourth and fifth picture are the style you should use but without them in front of me I can't tell is the are for a 6 or 8 cylinder. They are very similar in size but if you have the correct mounts in the correct location it should drop right in.

[396ci]

i have a set of 6 cyl mounts cleaned and painted w/ flat black paint. they will need a touch up on the paint again. $45 shipped if your interested. thanks.

[hamjet]

pics 1,2,3 are probably from a car 6 cyl. #4 will work with 6 cyl. stands in the rear xmember/frame holes 396ci shows.. pic 5 are 8 cyl stands in the 8 cyl xmember/frame holes.

[BKWARDS]

is their a difference between the frame mounted part of the engine mount on a 6 Cyl. and an 8 Cyl.?

[396ci]

Originally Posted by BKWARDS

is their a difference between the frame mounted part of the engine mount on a 6 Cyl. and an 8 Cyl.?

hi russ,

welcome to the forum!

both use the same mounting holes but i believe the difference is the angle of the mounts and therefore v8 and 6cyl are different.

thanks,
brian

[hamjet]

Originally Posted by 396ci

hi russ,

welcome to the forum!

both use the same mounting holes but i believe the difference is the angle of the mounts and therefore v8 and 6cyl are different.

thanks,
brian

This is true, although I believe 6 cyl. and big blocks used the rear holes while the sbc used the front set of holes on the frame/xmember. In your 5th photo it shows sbc mounts in the forward holes. you need the 6 cyl. mounts bolted to the rear holes. (about 3 inches back).

[396ci]

russ, i shipped the mounts today and pm'd you the tracking #. thanks again!

[72bowtiestepper]

Originally Posted by hamjet

This is true, although I believe 6 cyl. and big blocks used the rear holes while the sbc used the front set of holes on the frame/xmember. In your 5th photo it shows sbc mounts in the forward holes. you need the 6 cyl. mounts bolted to the rear holes. (about 3 inches back).

That is correct...the 6 cyl. mounts use the middle & rear holes in the frame.

[GASoline71]

Originally Posted by BKWARDS

Hello,

new member here. I am removing a 350 and installing a 250 Intg. head engine, (completely rebuilt and balanced) into a 1971 GMC C-10. (I prefer the simplicity of the 6 Cyl. engine.) After all of the problems of the brackets A/C ect.. I am now having problem finding the correct engine mounts. I am including pictures of the mounts that came off the 250, and the two parts of the 350, one in truck. I do not know what mounts to use to install the 250. seeking advice.

Thank You

I hope I am posting this correctly

I was just curious and wanted to pick your brain... how much simpler is an I-6 to a SBC? They are both some of the simplest designs on the planet when it comes to troubleshooting and working on them mechanically.

Anyways...just curious as to what makes an I-6 simpler than a Chevy small block?

Gary

[hamjet]

2 less cylinders, 2 less pistons, 4 less valves, rockers, pushrods, springs, 2 less plugs 2 less plug wires, OHHH, forget it...LOL

[57larry]

I always liked the SBC over a 6

[swamp rat]

I like them both..

[BKWARDS]

Still on motor mounts

I just received item 3 in the first Pic. From rockauto they said it would fit 6 cyl. From 1965-72 and pickup's 71 &72. However it does not. The “B” measure on items 1 &2 is 3” on item 3 it is 31/2”. The “A” measure on 1 is 27/8”, and on 2 it is 21/2”, on 3 it is 31/4”. Item 2 is formed to compensate for the lower block leaning inward. #1 is pretty much vertical. I received the frame part of the mounts from 396CI.

Still looking for help, what goes onto the block?????

[BKWARDS]

perhaps I forgot the new Pics. here they are.