Technical > Matt Shaff's Engine Shop

shift rpm

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spookie:
I bracket race,and I do have a shift solenoid. The last time I had a T&T fall back on converter was 5100rpm ,shifted at 6200. Ran 5.70is,but cold and rain have stopped T&T. Want to find sweet spot before racing $tart$ Thanks for all input. :D

dusterdave173:
shift loop is the best test you can do and is easy as pie  Tried and true

Good luck!!

Frontenginedragsters:
I don't know what the duration @.050" tappet lift is. Maybe 250-262*? Also don't know what intake centerline degree the cam is installed at.
The torque curve with a 106* lobe separation will be a narrower than a wider one, say 110*.
Do you have good rods and lighter pistons? If the cam is installed with a intake centerline of about 108 or 110* it should run to 6400-6800.
Sounds like you have a re-play tach? Its great if you can see the RPM it drops to on the shift.

Matt

dreracecar:
Shift point???    Don't shift unless you are in front ;D

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