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Working over the 57 chevy
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<blockquote data-quote="swampratt" data-source="post: 3783392" data-attributes="member: 15054"><p>I have not put the math to the cam and gear change yet I have just driven it and enjoyed it being better.</p><p>But I do not think it is better with the pontoon in tow vs the 280H on a 110 lsa.</p><p>Lugging it too much and this is causing the converter to slip much more so rpm is not as low as it should be.</p><p></p><p>2700 at 65 and TH350 is the transmission.</p><p>I feel a 3.25 or 3.50 gear would put it in a sweet spot.</p><p></p><p></p><p>Yes i recently bought a 1980 Chevy truck from a member here knowing the engine had issues.</p><p>Head was cracked and block was .060 over and has a lot of rust in the cylinders and one with huge pits like porosity in the casting 1/4" round craters in the cylinder walls.</p><p>Junk block.</p><p>Got another block and machine shop bored and honed it and said it was ready and when I was cleaning it all up I found a pin hole in cylinder 5</p><p>that goes through the cylinder into water. Another .060 over rusted out 350 block.</p><p></p><p>I dug around through my junk and found a decent .030" over 350 I cleaned it up and my cam was just finished Friday.</p><p>But the Pontoon lost a hub/spindle assembly Thursday and I am busy with that.</p><p>Battery died in my 57 same night and then the next day the upper radiator hose split on my camo corolla 100 feet from the house.</p><p></p><p>Lucky!</p></blockquote><p></p>
[QUOTE="swampratt, post: 3783392, member: 15054"] I have not put the math to the cam and gear change yet I have just driven it and enjoyed it being better. But I do not think it is better with the pontoon in tow vs the 280H on a 110 lsa. Lugging it too much and this is causing the converter to slip much more so rpm is not as low as it should be. 2700 at 65 and TH350 is the transmission. I feel a 3.25 or 3.50 gear would put it in a sweet spot. Yes i recently bought a 1980 Chevy truck from a member here knowing the engine had issues. Head was cracked and block was .060 over and has a lot of rust in the cylinders and one with huge pits like porosity in the casting 1/4" round craters in the cylinder walls. Junk block. Got another block and machine shop bored and honed it and said it was ready and when I was cleaning it all up I found a pin hole in cylinder 5 that goes through the cylinder into water. Another .060 over rusted out 350 block. I dug around through my junk and found a decent .030" over 350 I cleaned it up and my cam was just finished Friday. But the Pontoon lost a hub/spindle assembly Thursday and I am busy with that. Battery died in my 57 same night and then the next day the upper radiator hose split on my camo corolla 100 feet from the house. Lucky! [/QUOTE]
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