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05-11-2015, 01:24 PM | #1 |
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How did the early hemis survive the HP?
The 354s and 392s apparently had 2-bolt main caps, so how did their cranks survive the power produced via blowers and fuels of the 60's? Were they machined for 4-bolt caps, girdles, or something else?
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05-12-2015, 01:47 AM | #2 |
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Re: How did the early hemis survive the HP?
I would say that back in the day the early blown nitro 392 hemi's were all around the 700-1200 hp mark ?? So they survived but lots let go as well just like a stock block 440 at 1000 hp is today, it will hang together for this ????? long.
FWIW, I have a cast crank 440 that has well over 150 nitrous passes on it, it has 2 sleeves, 7 trw pistons, 1 manley piston that I shaped myself, ran a best of 9.69 and will not die, I think its a crossed fingers thing |
05-18-2015, 11:27 PM | #3 |
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Re: How did the early hemis survive the HP?
I don't know the HP, but this is one of my favorite photos of drag racing. I think they said this was on hydrazine, not sure but that would make sense.
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05-19-2015, 12:04 AM | #4 |
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Re: How did the early hemis survive the HP?
some racers used 4 bolt mains many variations here some were splayed while others were not--- some used a combination of 4 bolt mains & a stud girdle--- others used just a stud girdle lots of variations in the design of the girdles---- lots of variations of mains/girdles etc to get them to live---FED 387
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05-19-2015, 01:01 PM | #5 | |
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Re: How did the early hemis survive the HP?
Quote:
One of the best blown engine pics ever. Have to wonder what he was "really" thinking as he is looking down at his lower body! lol Last edited by Charlie A; 05-19-2015 at 01:06 PM. |
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05-19-2015, 01:04 PM | #6 |
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Re: How did the early hemis survive the HP?
Best exploded transmission picture:
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