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head/cam 12.58?

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Old 05-23-2008, 10:47 PM
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Default head/cam 12.58?

went to the track today and didnt do too well. 60 ft.- 1.98 1/4-12.58 mph-114 i have a ms4 cam, ls6 heads, zoom d2 twin disk clutch, lca's,subframes, torque arm, and 9 inch rear with 3.73's and 275 bfg drag radials. Anyone have any suggestions on why its not running very well.
Old 05-23-2008, 11:06 PM
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Get your 60" down and you should be in the high 11's low 12's.
Old 05-23-2008, 11:34 PM
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no way your making 469 RWHP and only traping 114, something is very wrong since you dyno'd it, or dyno was wrong and yes you can get a lot more out of a better 60' but I went 12.66@109 with just a 1.9x 60' hiting the rev limiter shifting from 2nd-3rd, (something is wrong with the tranny) on heavy ZR1 wheels and just bolt-ons. Is it manual and are you granny shifting or something? you should be traping 120+ depending on weight. Any check engine lights? pull a few plugs (the easiest to get to) on each side and check for lean, rich, or burnt looking plugs.
Old 05-24-2008, 07:44 AM
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yeah thats what i was thinking that much power and only 114 even if my 60 sucked i should still have more mph.
Old 05-25-2008, 11:55 AM
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post your slip up so we can see where your power is going..
Old 05-25-2008, 05:21 PM
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Originally Posted by ZV8
no way your making 469 RWHP and only traping 114, something is very wrong since you dyno'd it, or dyno was wrong and yes you can get a lot more out of a better 60' but I went 12.66@109 with just a 1.9x 60' hiting the rev limiter shifting from 2nd-3rd, (something is wrong with the tranny) on heavy ZR1 wheels and just bolt-ons. Is it manual and are you granny shifting or something? you should be traping 120+ depending on weight. Any check engine lights? pull a few plugs (the easiest to get to) on each side and check for lean, rich, or burnt looking plugs.

Sounds like an extremely generous dyno....ESPECIALLY with 373's....Your more likely in the 420's to the wheel...
Old 05-25-2008, 05:29 PM
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i was running those times with some bolt ons and street tires! something is wrong lol. Have any video of track runs?
Old 05-27-2008, 03:55 PM
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you guys.........................

what track what was the d/a????

where i race the rwhp and trap look about right........

not every track is the same
Old 05-28-2008, 06:11 PM
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i ran it at mason dixon in hagerstown, maryland when the car just had headers, all the suspension same tires and clutch it went 12.53 at 115 so something has got to be wrong. The 60 foot was terrible ( 1.98 ) but everything else should still be better
Old 05-28-2008, 08:34 PM
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Proof again how worthless ms4's are!
Old 05-29-2008, 08:49 AM
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is it possible my tune could be off. The only reason i think this could be whats goin on is cause i ran the car un-tuned the last week the track was open last year and with a 2.6 60 foot the car ran 12.70 at 120. And that was before it was tuned at all.
Old 05-30-2008, 06:15 PM
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MS4's are a classic example of to much cam. It's just like the old days with SBC's, everybody still thinks that if a little more cam is better the biggest cam in the world must be the best. How much compression do you think your blowing off with that cam?
Old 05-30-2008, 08:03 PM
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Yea.. that Cam is pretty damn big. I've seen the MS3 out-perform the MS4 on several occasions.
Old 06-02-2008, 11:56 AM
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I was at the Mason dixon too and I sucked ***. 14.xx 2.0 6ft. Last time I ran better like 12.9 I would like to blame it on the track but I know my clutch slipped bad.
Old 07-01-2008, 07:16 PM
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get it to hook good and your there
Old 07-01-2008, 08:32 PM
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114 trap is roughly 360-370 RWHP trap speed. If you went 120 untuned then tuned it and went 114, something in the tune is wrong.
Old 07-16-2008, 12:10 PM
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Yeah somethings fishy fo sho! Ive trapped 112 and ran a tenth faster and have nothing more than exhaust and gears...id deff go for a new tune



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