Thread: 355 combo evaluation -dyno? Thoughts, suggestions, comments appreciated

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Looks like a great build to me. 5.13 with 37" tire will be the same relationship as 3.54 with a 26" tire. I might have gone with 5.38 gears, but you're close.

I would not have used 1.6 rockers in anything but a race motor build, where routine maintenance is practiced. In my opinion, the valvetrain already has enough strain on it without the added strain of higher ratio rockers, particularly with aftermarket springs. They're probably worth only about 10-12 horsepower over 1.5's anyway. I'd use 'em only if I needed extra power to drive around a competitor in structured class racing.

Cam appears to be a very good match and the 112 LSA should help produce sufficient vacuum for power brakes. it should begin making power somewhere around 2000, so a 10", 2500/2800 stall converter might be my choice. Choose a small 10" diameter unit that is designed from the git-go for the purpose, rather than a 12" unit with the fins bent over.

Squish/quench is right on the money at 0.041".

Install an H pipe immediately after the collectors for better sound and a slight increase in power. The motor will like a good balance side to side.

Sorry, I know nothing at all about EFI, but maybe one of the other fellows on the board will chip in.

Some pics would be appreciated.
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