Engine for our 1969 GMC - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Warrens69GMC · 11-16-2017, 03:11 PM

So our 1969 gmc hasn't ran in about 10 years and I ran across a deal I couldn't pass up. It is an engine and transmission out of a motorhome (350) with 31,000 original miles:

Complete from air cleaner wing nut to oil pan drain plug.
Built April 1976
010 block
991 heads
th350

Going in:
1969 GMC 2wd
all new hd suspension
31x10.50r15 tires
3.73 rear axle

So the questions-
This engine appears to have low performance (duh) and small valves. I was thinking of using the XE256 from comp cams in it to boost performance (I already have the cam and lifters- new)
New heads are not an option, I'd rather run it as-is.
Maybe run headers? already have them off a parts truck as well, or maybe rams horns for original look?

11-16-2017, 03:11 PM	#1
Warrens69GMC Registered User Join Date: Jan 2003 Location: Safford,AZ Posts: 3,613	Engine for our 1969 GMC So our 1969 gmc hasn't ran in about 10 years and I ran across a deal I couldn't pass up. It is an engine and transmission out of a motorhome (350) with 31,000 original miles: Complete from air cleaner wing nut to oil pan drain plug. Built April 1976 010 block 991 heads th350 Going in: 1969 GMC 2wd all new hd suspension 31x10.50r15 tires 3.73 rear axle So the questions- This engine appears to have low performance (duh) and small valves. I was thinking of using the XE256 from comp cams in it to boost performance (I already have the cam and lifters- new) New heads are not an option, I'd rather run it as-is. Maybe run headers? already have them off a parts truck as well, or maybe rams horns for original look? Last edited by Warrens69GMC; 11-16-2017 at 05:20 PM.



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