1974 to 1976 omc v4 crankcase or powerhead

[nohasslekindaguy]

As the title says, I need a powerhead or bare crankcase with a 3.5" bore to fit a 1976 135 motor.
Thanks.

[thornl01]

I have a couple of them, already disassembled.

Block- $ 100, naked, (have a few exhaust humps,( $ 50) but stuffers are Questionable)
Crank- $ 50
rods- $ 20 ea
* note heads are NOT included in above. all are plus shipping.
Located in Florence SC.

will also barter /trade/ v4 looper parts.

[nitro_rat]

A buddy of mine has an old 135 that's a runner. He might let it go, but I bet he would want to keep the heads! I think it's a '74. PM me if you want me to ask him about it.

[nohasslekindaguy]

Thanks for the help. I may check with you abouut that. Excuse my ignorance, but what's so special about the heads?

[nitro_rat]

They have a smaller combustion chamber for higher compression. Some race classes don't permit "modified" parts but will allow swapping "stock" parts that are interchangeable. So instead of cutting the heads on a 140, you find a set of early 135 heads to boost the compression and it's "legal."

Those early 135's have 145-150 psi cranking compression if they're healthy. It's too much for today's pump gas. If you run a tank of 87-89 octane through one you'll burn it down. Best to use some later 140 heads anyway, or take some timing out for recreational use.

[nohasslekindaguy]

I didn't know that. Thanks.