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HPP One Man Shootout - Pontiac Pavement Pounders

1975 Ventura Front View
1975 Ventura Front View 1975 Ventura Front View 1975 Ventura Front View
STRIP TUNING LOG
Run/Tuning Launch RPM Shift Pt. 60-ft. 1/8-mile 1/4-mile
1. 15½-psi in slicks 1,400 5,300 1.72 7.73/88.57 12.20/109.72
BEST PASS CORRECTED 11.96/111.90
2. 16½-psi in slicks 1,600 5,300 1.75 7.86/87.35 12.39/108.19
3. Same 1,400 5,300 1.74 N/A 12.31/109.32
4. 151/2-psi in slicks 1,400 5,300 1.73 7.78/88.25 12.25/109.73
Run Notes: 1) Good pass; 2) Tire spin, engine hot: 185-deg; 3) Engine still too hot; 4) Engine temperature: 165-deg.

STRIP SPECS
Year/Model '75 Ventura
Race Weight With Driver 3,550 lbs
Curb Weight 3,355 lbs
Fuel Level When Weighed 1/8-tank
Fuel 94-octane
Engine 455 '73 XA
Cubic Inches Before/After 455/462
Engine Built By Dale's Performance Machine
Power Adder None

Induction System
Air Cleaner K&N 14-in
Carburetor Holley 750 cfm
Jets No. 73-84
Spacer Plate Summit 1-in, open, phenolic
Intake Manifold Edelbrock Torker II

Fuel System
Pump Holley Blue electric 110-gph
Lines 8-AN
Regulator Holley, set to 7 psi

Heads
Casting '71 No. 96
Head Porting No, gasket matched only
Flow Numbers N/A
Valves 2.11/1.77-in

Bottom End
Pistons TRW forged flat-top, 0.030 over
Rings Speed Pro moly
Rods CAT H-beam 6.625-in length
Compression Ratio 9.4:1
Crankshaft Stock cast 4.21 stroke
Rotating Assembly Balanced Yes

Camshaft
Brand Crane hydraulic flat-tappet
Duration at 0.050 234/242-deg
Duration Advertised 296/304-deg
Lift With Specified Rocker Arms 0.479/0.494-in
Lobe Separation Angle 112-deg
Installed Position Straight up
Rocker Arms Comp roller tip 1.52:1


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Related Photos

1975 Ventura Front View 1975 Ventura Front View
1975 Ventura Front View

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