Fast Burn Cam

mike70454

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Dec 24, 2019
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I am building a ZZ6 fast burn engine & was wondering how much cam I can put it. I was looking at one with .575 lift & 255 duration @.050
Anyone tried that yet? Thanks.
 

63Half-ton461

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Nov 18, 2019
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1978 Monte Carlo 383 slammed
When i raced circle track, one track i ran at was a 3/8 mile (clay) bull ring , the class was outlaw street stock and i had a hi compression 400, I ran a comp oval track flat tappet 232/237 with a 3000-6000 power range, that thing pulled like a mule (hard packed track) and the torque was unmanageable, i think the term they use is explosive! If i was running fast burn heads instead of reworked 492's that thing would have been even more insane. I wouldn't run a 255 degree cam unless i was running a 1/2 mile + track.

But then i your case, your a road racer so i guess i would say how long is your track , how many turns and how long is your longest strait and how sharp a turn does it dump into ? what's your base rpm 4000ish ?

255 is a lot of cam in a 350, how hard do you need it to pull off your minimum rpm ?
 

mike70454

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Dec 24, 2019
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Thank you. We are running a drag car in the crate motor stocker class. We use a 4500 stall conv. with a 5:13 gear @ 3000lbs. Currently there is legal 245/530 cam in our present c/m engine. It pulls to 7100 rpm with 500hp on the dyno. It runs 10:90 I just wanted to experiment with out new engine. Will it clear the extra .050 lift?
 

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