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And a few more notes;
I have tried a couple of changes in the past, at one point being totally fed up with the high wearing out of Chevy engines, mainly valve guilds and seals plus the cylinder wear. I had a friend whom was totally surprised by the Chevy’s need for a ridge cutter to remove pistons, he was a Cadillac and OLDs fan and with those engines such cylinder wear was unknown…I learned it was due to the use of high nickel in the engine block…and have learned how to spot some Chevy engines with higher nickel.
The point is back in the early 90s I put a used OLDs 350 into my then 1998 Chevy van. It worked fine until it lost a rocker arm on a trip to Chicago. It limped home and I asked for another OLDs 350, but my friend was sold out and he offered me a 305 OLDs.
WOW was THAT a mistake….MPG dropped big time and on trips I was getting honked at by big rigs climbing mountains as I had to use second gear to get up the hills and was slower than them and I was in the way so had to pull over to let them pass.
AT this point I was planning on a 403 OLDs when I discovered a site called 3rd Gen. Camaros and about TPI and how great these fuel injection systems are, and sadly there were no TPI for the OLDs engine and I don’t think even fuel injection system for these old engines.
So I then bought my 93 TBI 350 with a four speed auto with OD and planed on swapping in a TPI someday. That someday did not happen until now.
So I came up about the same thing you were talking about a large engine running slow. And I felt a 350 might be a little small so feel a stroked 350 with a 400 crank making a 383 would work better.
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