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Re: HEMI Quench?
[Re: mbogina]
#815931
09/28/10 05:31 PM
09/28/10 05:31 PM
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Joined: Dec 2008
Posts: 1,200
UK
602heavy
pro stock
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pro stock
Joined: Dec 2008
Posts: 1,200
UK
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Quote:
602Heavy- I don't really believe the 572 in question was very inefficient- 840 HP, 757 TQ, 10.9 Comp, .38-.40 BSFC on 91 octane pump gas street motor, gets driven 3000+ miles a year.
Nice #s.  ......i'm only pointing out the fact the engine 'could' be more efficient , the earlier the spark is fired off the more pressure is put upon the piston as it moves toward TDC , 42* is a lot of advance when running 91 octane , not being critical of you're build just throwing out opinions , which don't add up to much anyhow.
I had a 9.5:1 605" wedge that ran 44* spark lead , milled the heads etc & raised CR to 10.4:1 , the engine ran best around 34* advance on 97 octane....faster the burn the more efficient the engine will be.
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