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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: Jakissel on October 16, 2012, 07:18:04 pm

Title: 85' C10
Post by: Jakissel on October 16, 2012, 07:18:04 pm

I recently purchased a 1985 C10. Truck is currently with the factory 305 engine. I'm wondering if a Chevy 350 4 bolt main with fit right in and work with the current factory transmission?

Title: Re: 85' C10
Post by: Captkaos on October 17, 2012, 12:03:44 am

There is no difference between any small block Chevy of any cubic displacement, all of them interchange, the only gotchas are the 86-up 1 piece seal, and then the only difference is a different flywheel.
The number of main bolts are not a factor.

Title: Re: 85' C10
Post by: Blazin on October 17, 2012, 12:55:02 am

The dipstick is on the right hand sisde of the motor for a one piece rear main seal. Its on the left hand side for a two piece rear main seal motor.

Title: Re: 85' C10
Post by: 9511234 on November 02, 2012, 11:42:46 am

If you plan to use a mechanical fuel pump you'll want to make sure the block is prepped for it.  All blocks have the outside mounts, but not all are drilled through.