Quote:
Originally Posted by Formulajones
Running them on a dyno is always a good idea anyway. Why guess. Not really for bragging rights but for many other reasons.
These days with the cost of a good proper engine build surpassing as much as $10,000 for moderate stuff, it really makes a dyno session a no brainer.
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Agreed,I’ve only had 2 engines I built put on a dyno and other than a couple of twists of the distributor no real tuning was done. Getting the power curve and numbers is nice but the peace of mind knowing it isn’t going to fly apart or leak when it goes in the car is more than worth it.
The in car tune is going to be different than the engine dyno tune anyway.
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68 GTO,3860#
Stock Original 400/M-20 Muncie,3.55’s
13.86 @ 100
Old combo:
462 10.75 CR,,SD 330CFM Round Port E's,Old Faithful cam,Jim Hand Continental,3.42's.
1968 Pontiac GTO : 11.114 @ 120.130 MPH
New combo:
517 MR-1,10.8 CR,SD 350CFM E's,QFT 950/Northwind,246/252 HR,9.5” 4000 stall,3.42's
636HP/654TQ
1.452 10.603 @ 125.09
http://www.dragtimes.com/Pontiac-GTO...lip-31594.html