head/cam 12.58?
05-23-2008, 10:47 PM
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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.
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.
05-25-2008, 05:21 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.
Sounds like an extremely generous dyno....ESPECIALLY with 373's....Your more likely in the 420's to the wheel...
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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
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.
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?
