Mph ques ...?

two-gun kid

Legion 510
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Friend of mine has a
03 cobra
2.6 kb @ 17lbs
567hp/480tq
Stock headers
Magnaflow x pipe with hi flow cats
Magnaflow mufflers
Solid rear with 4.10
Pprv delete
Stock pump with bap
60lb injectors

His 60ft average 1.7/1.8
1/8 mile his best is
7.67 @93.60

His best 1/4 is
Et 12.13
Mph 111.73

Car runs fine I'm thinking its his tune but would like to see what you guys think.
 

MBoyle1

redfire
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Hp &the mph are way low.I can tell you that combo made me 601/502 & I trapped 123 mph,Also with eaton at 445/449 I was trapping at 115.the 1.7 60' is average (not great but not bad)something is wrong!how is he shifting?
 
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Bdubbs

u even lift bro?
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Damn, and get rid of those 4:10 gears.
 

SVT_Troy

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with a 2.6 kb he should be somewhere in the mid 600ish range on 93. Track times depends on his suspension setup and driving ability so I won't guess on that. With an SRA he has potential to launch hard but is it setup properly? What shocks/struts is he running, FLSC, size of tires, etc....
 

two-gun kid

Legion 510
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Ill get a picture of the dyno sheet and video of the pass.

When he had a steggy stage 4 port @ 14lbs without pprv and without diablo MAFia it went
12.1 @ 117

Only change was kb/pprv delete/MAFia.

Motor just hit 40k miles
Compression is fine.
 

two-gun kid

Legion 510
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Suspension is Lakewood upper/lower control arms. Built GT rear end. Stock bilsteins. Springs are H&R springs. Stock subframe connectors.
 

MBoyle1

redfire
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Ok even though the560hp is low for the combination(it is what it is)the times still dont add up& he should trap around 118-120.Im thinking he has a 26"tire with the 4:10 gears causing him to use over drive gears in the 1/4 & going slower due to the extra shifting?
 

two-gun kid

Legion 510
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It's not the driver. Several people made passes on the car and trap speed was 103-108 mph.
It goes through the beams around 4500-5000 with the 4.10 in 4th gear on the 26x10 slick.
 

Sagittaria

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I've trapped 117-118 on the below pullied setup on street tires and a not so great driver... so yeah something is definitely up.
 

MBoyle1

redfire
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The only other explanation is the motor is hurt&only putting out around 400hp.compression /leakdown &new dyno tune to see what is going on in there
 

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