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Cliff Ruggles's 1973 Ventura
(In His own Words)

Daily driven 1973 Ventura, with 1974 GTO hood and Shaker assembly.

TH400 transmission with Continental "tight" 10" converter, 3.42 gears. 275/60/15 MT Drag radials on stock 7" rims.

Best run to date 11.39 @ 120mph, in full street trim, thru quiet mufflers, on 89 octane fuel. 60' times 1.61, 7.20 1/8th mile at 96 mph.

We were not able to dyno the engine, but would estimate that it makes around 560-580hp and around 600-620 torque. It would be happier with a bit more gear and/or converter.

Street manners are excellent, near smooth idle, with just a hint of "attitude", smooth right off idle and excellent throttle response.

  
   

News & Events

Where we are at post fire
01.31.24
It's been a very difficult 7+ months since the fire which basically destroyed our world occurred. We more >>
What's going on at SD in 2020
05.28.20
We're keeping plenty busy in the shop in this crazy world we're all living in. Demand for our CNC ported more >>
End of 2018 is fast approaching!!
12.04.18
Well it's been a while since we had an update on what's been going on at SD so here's a quick overview. more >>
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Engine Specs.
The engine is a 1968 428, with a 455 iron crankshaft, steel Tomahawk "I" beam lightweight rods, and JE pistons, compression ratio 10.99 to 1. The rotating assembly is balanced.

Heads are from SD Performance, 290cfm KRE aluminum "D" ports. They also supplied the camshaft, the "old faithful" HR cam, 236/245/112.

It is topped with a stock RPM intake, port matched only, and 1978 Pontiac quadrajet. Stock HEI distributor with a positive stop welded in for the advance, 990 module and stock coil.