Some say 1.6 was a stock offering. I dunno. Been a long time since I messed about with a Falcon Six. Put many miles on a 1979 Fairmont, but it had hydraulic lifters
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just get a cam with some more lift
YES
The problem is many cams have less lift than stock. The more expensive ones have greater lift. Can't get additional lift out of regrinds unless they first build up the lobes, adding considerably to the cost, or using a NEW cam blank
* Stock A12 8mm lift (.315 inch)
* Stock GX 8.4 mm lift (.331 inch)
* JUN 74 6.5 to 7.2 lift
* Isky DB-88 .297 lift
* Isky DB-99 .338 lift
* JTS 104CB .409/.408
* JTS 140-6 .430/.432
* Wade Cams: .379 to .470
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If you are chasing 10/10ths you'd be better off with some aftermarket roller rockers.
Yes indeed. Rollers are good for fractional improvement due to reduced friction. High lift is good for major changes. The modern cam profile has fast-open, fast-close, high lift profile and doesn't rely on duration change only like those cheap regrinds
Lastly, if you are going to use 1.6 rockers, tell your cam grinder so they can choose an appropriate profile. Whether or not 1.6 works well with a stock cam is unknown -- you can try it and let us know after 20,000 miles if the cam, valve stem ends or valve guides are worn