72 Chevelle, 3,500-3,700 lbs (?)
406 sbc, 4.155 bore
6" rods
Dart Pro 1, 200cc intake, 72cc chamber, 2.02 / 1.6
10:1 compression
1.5 rockers
Victor Jr (current, could switch to RPM Air Gap)
750 cfm carb
1-3/4 primary, long tube Hooker Super Comp, 2.5" with x-pipe
Richmond 5 speed (3.27 / 2.13 / 1.57 / 1.23 / 1.0)
2.73 gear
27.5 (current) or 26 (possible) tire
Street performance only. Also, I have power brakes and don't want to run a canister or pump.
Car had a Comp XR276HR-10, but the fuel pump lobe got wiped for lack of a bronze-tipped rod. Also had a 3.07 gear and now has the 2.73.
I got a tech recommendation for a Howard's 111145-12 (219/225, .525/.525, 112 LSA, 1500-5600) or Lunati 20120711 (219/227, .515/.530, 112 LSA, 1800-5800) and to change to an RPM Air Gap. I may also go to a smaller 26" tire, especially if it would helpful to bump up the 5th gear rpms a little. Are these cam recommendations on the mark with the compression, trans., rear gear, etc.? FWIW, my builder suggested going a step bigger than the XR276HR-10 to something like 230/236, .550. I think that would be too much cam/too high of an RPM range. I thought about the XM276HR (112 LSA) but that also seems big with the 2.73 gear?
I have relatively little knowledge/experience picking a cam, so help is appreciated.
406 sbc, 4.155 bore
6" rods
Dart Pro 1, 200cc intake, 72cc chamber, 2.02 / 1.6
10:1 compression
1.5 rockers
Victor Jr (current, could switch to RPM Air Gap)
750 cfm carb
1-3/4 primary, long tube Hooker Super Comp, 2.5" with x-pipe
Richmond 5 speed (3.27 / 2.13 / 1.57 / 1.23 / 1.0)
2.73 gear
27.5 (current) or 26 (possible) tire
Street performance only. Also, I have power brakes and don't want to run a canister or pump.
Car had a Comp XR276HR-10, but the fuel pump lobe got wiped for lack of a bronze-tipped rod. Also had a 3.07 gear and now has the 2.73.
I got a tech recommendation for a Howard's 111145-12 (219/225, .525/.525, 112 LSA, 1500-5600) or Lunati 20120711 (219/227, .515/.530, 112 LSA, 1800-5800) and to change to an RPM Air Gap. I may also go to a smaller 26" tire, especially if it would helpful to bump up the 5th gear rpms a little. Are these cam recommendations on the mark with the compression, trans., rear gear, etc.? FWIW, my builder suggested going a step bigger than the XR276HR-10 to something like 230/236, .550. I think that would be too much cam/too high of an RPM range. I thought about the XM276HR (112 LSA) but that also seems big with the 2.73 gear?
I have relatively little knowledge/experience picking a cam, so help is appreciated.