Other than the factory or the Isky E 4 cam, anyone using a solid cam that makes good power to push a "66 Dart to the low 12.0-12.20's? 4 BBL, 9" converter, 4.10 gears, 1 5/8 headers, LD4B and the stock AFB and tweaked 302 heads.
273 CAM
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dibbons
Well-Known Member
I use Isky 1012-C on my .060 over 273 with stock cylinder heads--best 12.72 ET @ 108 MPH. (A-833 four speed, 4.56 axle ratio, 600 CFM Holley DP, 10:5+compression)
Per Isky catalog:
Application: All out drags. 5000 stall. 4.88-5.13 axle ratio. 850+CFM
Carb. 12:1 compr
RPM-Range: 4500-8000
Value Lift Int/Ext: .580/.580
Value Lash Hot Int/Ext: .028/.028
ADV Duration Int/Ext: 312/312
.050 Duration Int/Ext: 274/274
Lobe Center: 104
Per Isky catalog:
Application: All out drags. 5000 stall. 4.88-5.13 axle ratio. 850+CFM
Carb. 12:1 compr
RPM-Range: 4500-8000
Value Lift Int/Ext: .580/.580
Value Lash Hot Int/Ext: .028/.028
ADV Duration Int/Ext: 312/312
.050 Duration Int/Ext: 274/274
Lobe Center: 104
roccodart440
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Comp cam 20-249-4
You should call the cam companies with their reccomendations. You will have to build a pretty nasty 273 to get into the low 12's.
Here's a link to some 273 powered race cars. Some pretty seriously built cars running a half second slower than where you want to be. Show me your 273-powered race cars
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