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What it boils down to 140-160 1970

uid 37336's pic
posted by  B20Paul. on  Fri Feb 9 04:11 CST 2007
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last visit: Mon Oct 20 10:54 CST 2014
[RELATED]

The difference mostly is I've had that rotten DGAV on there for so long I forgot what a good carb can do...

There's nothing wrong with DGV's, it's just that they are incredibly hard to jet. Back in the late 80's, I was helping out a friend with a 2 litre Pinto powered Ford Escort. We had a good head on it, so it really needed more airflow than than it's DGAV could provide. The stock DGAV manifold is good, so we put a 500cfm 2 barrel Holley on it. The 2 barrel is designed to be a bolt on to 302 Windsors, the main & idle systems actually work just fine on the little 2 litre, but the power valve orifices are far to big. All that is needed is to fit a couple of grub screws to the metering orifices behind the valve & then drill a .020" hole in each. Everything else remained the same, I think we changed the main jet slightly & the thing run fine & was just as economical as the DGAV.






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