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Dirt Maniac

Total posts: 106
posted April 07, 2002 02:29 PM
we are running a 78 malibu in street stock and we run a stock 350 with a 292 cam with 510 lift and '69-70 corvette 300hp heads we run a 273 gear anybody had any experence iwth the gear or cam we run 1/4mi dirtoval

Dirt Full Roller

Total posts: 66
posted April 07, 2002 09:52 PM
Drop your rearend gear to a 3.93 and run it in 2nd you'll get around 5500

Dirt Freak

Total posts: 310
posted April 07, 2002 10:22 PM
how hard do you turn your motor I use at least a 656 usaully a 688

Dirt Full Roller

Total posts: 53
posted April 10, 2002 01:18 AM
If you are running a TH 350 for a tranny your 2.73 will work if you run it in L1. I don't personally like the idea due to to the parasitic powerloss and the strain on the tranny but it does work and on a 3/10 track I beleive they are running about 5500 rpm pulling the straights. I think they also have to block the modulator on older trannies to keep it from shifting into L2 when it builds pressure. Not quite sure but I know alot of guys here do it and somebody on here should know all the ins and outs on how it works. Hope that helps.

Dirt Full Roller

Total posts: 74
posted April 12, 2002 10:11 PM
It depends on what size track I run a 273 rear end gear in mine it ends up being around 670 680 to the ground I cant remember exactly and it usually turns around 6200 on a quarter mile track. As far as it being power loss to run it in low gear thats not showed me much our Pure stock team has won 4 championships in 6 years and have never ran in any gear but 1st

Dirt Forum Racer

Total posts: 82
posted April 15, 2002 09:07 PM
Your rear end gear means nothing without your tranny gear figured in too. You can run just the same final drive as someone with a 600 rear end as long as you have the right tranny gear to go with it. I have a 273 with a saginaw 4 speed and in 2nd @ 1.54 I get a final drive of 6.01 which works good for me, but I race a longer track than you and probably a lot less rpm's due to our rules up here. I have the 041 heads, sounds like the same ones you have. I run a comp cam and get lots of ponies. As for you dirtracers, you should move up a class and stop picking on the new guys. Purestock is for beginners!

Dirt Freak

Total posts: 310
posted April 16, 2002 11:39 AM
when someone says final drive that is the trn X the rear end at least down here

[This message has been edited by Flatlander (edited April 16, 2002).]

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