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Old 01-13-2011, 01:20 AM   #6
Warrens69GMC
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Join Date: Jan 2003
Location: Safford,AZ
Posts: 3,613
Re: Replacing 305 in 1986 K10

Quote:
Originally Posted by Canyon Copper View Post
Why is it better?
This is just my opinion -
1. Has provision for roller cam & might have a roller cam (would ask before I bought it)
2. Better sealing heads (no valve gasket issues like those of the past).
3. 1 piece Rear main seal, has shown to seal better than 2pc RMS.
4. Introduces you to swirl port heads for your engine operating below 4K rpm.
5. You don't have to buy a new flywheel
6. if it has a roller cam, no cam wear like a flat tappet would without ZDDP
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