2013 Cobra Jet Specs are up

[69Cobra]

Originally Posted by Dwight Southerland

1964-65 Corvette 327 375hp = .872
1964-65 Shelby 289 325 hp = .889

FYI

If you are going to campaign, be consistent.

Thanks for the info Dwight I wasn't around in those days but can you tell me how many people actually campaign either of those combo's?

[Jeff Lee]

1969 AMX cross-ram SS package.
Factory rated at 340 HP, NHRA instantly made it 405 HP.
390/405= .9629.
Today it is 407 HP or .9582
Consistently campaigned for 44 years

[Dwight Southerland]

Originally Posted by 69Cobra

Thanks for the info Dwight I wasn't around in those days but can you tell me how many people actually campaign either of those combo's?

The very reason why such combos were never considered by any racer is because of the high power factor. Of course those two cars are now such expensive collertor cars that it would be difficult to consider either as a race car. However, even "in the day" those would not have been considered good choices because of the high power factor.

The new 302/350 would be tough, but this is a VERY sophisticated engine when compared to engines from the 60s. Most currently competing combinations from all makes fall into a power factor/displacement range of .75-.92. Some high performance version go as high as 1.1. Then the actual power produced is 60%-80% above the power factor. Just using that info for comparison, the 302/350 would need to make actual power north of 570. Is that possible? That's approaching 2 hp/cu in.