AC isn't a problem with the stock 70 LT1 cam - same lift and duration was used for all LT1's EVEN the 72 LT1 AC VETTES.
They just used a BB tach with a 5600 redline VS the 6500 redline in the "normal" LT1's to keep from slinging the belts. ALSO the compressor pulley is MUCH larger.
All that being stated...
I cannot give more accolades to Dave Crower at Crower Cams and allowing him to spec cams based upon the car and engine along with gear ratios...
HOWEVER the most pertinent piece of information is the FLOW numbers on the heads in .100 increments up to .700. You can make great HP Torque and still have good vacuum with WAY MORE cam than you would believe.
Crower spec'd a solid roller with 630 gross lift with a 280 duration on the 302... made GOBS of torque by 3500.
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~JAG~
NCRS#65120
68 GTO HO 4 spd Alpine Blue /Parchment 2 owner car
#21783 71 Corvette LT1 45k miles Orig paint - Brandshatch Green - National Top Flight - last known 71 LT1 built.
71 Corvette LT1 42k miles Original paint - Black - black leather - only black LT1 known to exist.
NUMEROUS Lemans blue Camaros,
Monza Red and Daytona Yellow Corvettes
& a Chevelle or two...
Survivors, restored cars, & other photos
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