Gramma's Car: the new project!

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**njsteve** · #1 10-01-2015, 06:43 PM

Can I just put this one on my mantlepiece above the fireplace for a while? Too pretty to use!

**njsteve** · #2 10-01-2015, 07:00 PM

We cc'd the 1975 6X-4 cylinder heads today. One head had chambers all at 94.5cc and the other head were all 93cc. A Pontiac engine guru plugged all the technical info from the build into his desktop dyno and it comes out to 9.44 to 1 compression and a predicted 390 horspeower at 4500 rpm and 480 lb-ft of torque at 3400 rpm. Compare that to the SD455 net rating with 290 horsepower at 4000 RPM and 390 lb-ft at 3600 RPM. [img]<<GRAEMLIN_URL>>/naughty.gif[/img]

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