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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Mar 2011 Posts: 58 New Guy | | New Guy Joined: Mar 2011 Posts: 58 | Okay gearheads...
I found a set of balanced Venolia pistons. I researched the job number today and called them. These pistons were ordered in 1984 by my pops. They are 4.080 with a .003 tolerance built into the skirt. Isn't 80 thou a pretty steep cut? Am I risking taking out a lot of life out of the block? What is the best cut for deck height? Can I safely cut .060???? I have balanced 7.000 rods to go with the pistons. With a stock 302 crank will I have enough clearance??? I'm planning on opening up the intakes and exhausts and cutting unleaded fuel seats. Is there a source of aftermarket valve guides? Or will stock guides tolerate a .005 ream??? I will have the valves done to go with the cam, but I need to know how much this little sister needs to breath. I am using a big port head but I am not sure how much bigger I can go. Help oh machinest guru's... help! | | | | | Joined: Jan 2001 Posts: 1,424 ODSS President | | ODSS President Joined: Jan 2001 Posts: 1,424 | These guys have some if not all of your answers. In addition, check in with Inliners.org. Several here on the 'Bolt have extensive machining experiences to share.
~ Cosmo
1949 Chevy Half Ton
Rocinante, like Don Quixote, he is awkward, past his prime, and engaged in a task beyond his capacities.
"...my good horse Rocinante, mine eternal and inseparable companion in all my journeys and courses." ...Don Quixote, Cervantes
"If you come to a fork in the road, take it."...Yogi Berra
"Rudeness is the weak man's imitation of strength." ...Eric Hoffer
| | | | | Joined: Mar 2011 Posts: 58 New Guy | | New Guy Joined: Mar 2011 Posts: 58 | Thanks Cosmo... I have this topic posted on Old GMC and Inliners... Looking for many ideas.... thought I would cover my bases.
Humble Newby | | |
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