Engine frame mounts 6cyl or 8cyl

[C10Again]

I'm swapping out the six for a sbc and was wondering, are the frame mounts the same for the 6 and 8. Or do I just need new motor mounts?

[72bowtiestepper]

Originally Posted by C10Again

I'm swapping out the six for a sbc and was wondering, are the frame mounts the same for the 6 and 8. Or do I just need new motor mounts?

Frame mounts are different, but will work for a small block V-8. Your engine will be closer to the firewall. The V-8 mounts use the forward position holes in the frame, and are angled different that the 6 cyl. ones.

[C10Again]

If I use the 6 mounts do I need to use a different trans mount? It has a three speed manual in it.

[hamjet]

With the 6 cyl. mounts it will bolt right to the trans bell housing the way it is. You'll have to mess with the clutch cross shaft to get it to line up. mine is slanting downward and it was rubbing on the headers. I had to heat and bend the top pedal arm to get to stop rubbing on the header.

[C10Again]

Thank you!

[Bagd72Chevy]

I put my 350 in on the 6 cyl mounts and it is really close to the firewall. A regular distributor might fit but I dont think an HEI will. I have an LT1 so I dont have a distributor out back but wanted to give you a heads up. Maybe someone can answer this with experience.

[hamjet]

I have HEI on mine, I can stick my fingers between the cap and firewall.. Have to remove cap to pull the dizzy but it will go.

[Bagd72Chevy]

Cool, question answered!

[07travis]

Originally Posted by hamjet

I have HEI on mine, I can stick my fingers between the cap and firewall.. Have to remove cap to pull the dizzy but it will go.

I'll second this. I swapped the 6 cyl. that was in mine for a small block just so I didn't have to find a different driveshaft and so on. Been driving it all summer without a problem, but the HEI cap gets super close to the fire wall. If I remember right I think I read on here somewhere that the 4wd pickups came with the motors back like this? Does anyone know if that's true?