I have one suggestion for you. The factory guages are not worth nothing, call summit and order you some autometer gauges. Autometer is so much more accurate, and not to mention that they have numbers instead of "normal"!!! They are a straight forward install, then you can see exactly where your car is running.
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'88 coupe
351W (.060" over)
trickflow "R" series heads, 1.6 ratio crane gold series rockers.
Miloden 7qt oilpan
trickflow street series intake, with 70mm throttle body, and 77 Pro-M mass air meter.
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