Hot Rod Forum : Hotrodders Bulletin Board

Hot Rod Forum : Hotrodders Bulletin Board (http://www.hotrodders.com/forum/)
-   Hotrodding Basics (http://www.hotrodders.com/forum/hotrodding-basics/)
-   -   Used 350 SBC $150. (http://www.hotrodders.com/forum/used-350-sbc-150-a-228701.html)

WoodmanDan 01-22-2013 08:59 AM

Used 350 SBC $150.
 
I just bought a compression tested 350 SBC for $150. (off Craigslist) The mileage is unknown, however the compression tests looked good, between 135-150. The unknown, the block is I believe a GM crate or a Jasper. That's what I don't know. The block # is 3970010, the heads are 3417368 & 3417369. Can someone tell me the HP of this? Is this an aftermarket engine? The block numbers show they were made from 1968-1979, however the head numbers were from 1990 & newer. Anybody have any info on this?

cobalt327 01-22-2013 09:11 AM

Quote:

Originally Posted by WoodmanDan (Post 1637578)
I just bought a compression tested 350 SBC for $150. (off Craigslist) The mileage is unknown, however the compression tests looked good, between 135-150. The unknown, the block is I believe a GM crate or a Jasper. That's what I don't know. The block # is 3970010, the heads are 3417368 & 3417369. Can someone tell me the HP of this? Is this an aftermarket engine? The block numbers show they were made from 1968-1979, however the head numbers were from 1990 & newer. Anybody have any info on this?

You'd like to see less deviation between the cylinders, 15 psi is over 10%.

Heads are 76cc smog chambers, supposedly made in Mexico but a heavier casting than many late sbc heads, 1.94" x 1.5" valves, pressed studs, etc.

A magazine test used a crate engine w/those heads (c/n 369) and made 335 hp w/a Comp XE268 cam. Valves had a 30 degree backcut, 0.015" shim head gasket to raise CR and give a good quench distance.

WoodmanDan 01-23-2013 10:49 PM

unknown 350 update
 
Thanks for the info. This engine will repower a 1986 C-10. The current engine has piston slap going uphill & smokes 1 qt of oil every 100 miles. Time for an engine swap. I've learned this block is one of the most common castings for the SBC's & is also known for it's desirable high nickel content. I bought the a fore mentioned engine after compression test & listening to it run for 10 minutes.

BOBCRMAN@aol.com 01-24-2013 06:47 AM

Quote:

Originally Posted by WoodmanDan (Post 1638193)
Thanks for the info. This engine will repower a 1986 C-10. The current engine has piston slap going uphill & smokes 1 qt of oil every 100 miles. Time for an engine swap. I've learned this block is one of the most common castings for the SBC's & is also known for it's desirable high nickel content. I bought the a fore mentioned engine after compression test & listening to it run for 10 minutes.


And you can't beat $150.00!!


All times are GMT -6. The time now is 01:08 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.