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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!
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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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