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Vortec 350 build goes 7.456 in 1/8 mile

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Old Aug 30, 2009 | 01:15 AM
  #1  
danielmonster's Avatar
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From: Mississippi
Car: 1985 IROC
Engine: lb9
Transmission: 700R4 B&M shiftkit
Axle/Gears: 3.42s
Vortec 350 build goes 7.456 in 1/8 mile

I'm not too familiar with 1/8 mile times, but last night my car went 7.456 at 74.62 mph in the 1/8 mile. This was n/a. I'm not sure what to think.
Reaction 1.012
60ft 2.195
mph 74.62
ET 7.456
The mph doesn't seem consistent with the time? The guy in the left lane ran a 5.871 at 87.72 mph.

I shifted 1-2 at 6500 rpm and crossed the finish at the top of 2nd

1985 iroc
'98 350 vortec block standard bore
holley 770 street avenger
forged 9.73:1 pistons
229/245 .510 .540 hydraulic roller cam
stock vortecs machined for lift
long tubes 3 inch y-pipe hooker aero chamber
700r4 shiftkit
vigilante 3600 converter
3.42 gears
245/45/17 street tires

About what could i expect in the 1/4 mile and with DRs and a good 60ft what would i be running?

Last edited by danielmonster; Aug 30, 2009 at 01:38 AM.
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Old Aug 30, 2009 | 08:00 AM
  #2  
one92rs's Avatar
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Re: Vortec 350 build goes 7.456 in 1/8 mile

that would come out close to a high 11 second run in the quarter. i would be happy with that.
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Old Aug 30, 2009 | 02:42 PM
  #3  
5678TA's Avatar
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From: Maui, Hawaii
Car: 1984 Trans Am
Engine: broken 385sbc
Transmission: G-Force rebuilt T-5
Axle/Gears: Currie 9" Ford 4.30:1
Re: Vortec 350 build goes 7.456 in 1/8 mile

you sure you're looking at the right time? i'm not saying i'm doubting you but 7.4 @ 75mph in the 1/8th with a 2.19 60ft seems hardly feasible.

7.4's usually run between of 90-100mph at the 1/8th mile depending on 60ft.

5.8's are about 110-120mph.
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Old Aug 30, 2009 | 03:16 PM
  #4  
danielmonster's Avatar
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Joined: Oct 2006
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From: Mississippi
Car: 1985 IROC
Engine: lb9
Transmission: 700R4 B&M shiftkit
Axle/Gears: 3.42s
Re: Vortec 350 build goes 7.456 in 1/8 mile

i talked to someone about it and they said this particular track is actually shorter than 1/8
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Old Aug 30, 2009 | 03:28 PM
  #5  
xpndbl3's Avatar
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From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: Vortec 350 build goes 7.456 in 1/8 mile

those times don't add up at all, slow 60' and low mph but a low ET. Something is definitely wrong.
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Old Aug 30, 2009 | 04:24 PM
  #6  
danielmonster's Avatar
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Joined: Oct 2006
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From: Mississippi
Car: 1985 IROC
Engine: lb9
Transmission: 700R4 B&M shiftkit
Axle/Gears: 3.42s
Re: Vortec 350 build goes 7.456 in 1/8 mile

it's a 500ft track
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Old Aug 30, 2009 | 04:27 PM
  #7  
LunaticLsXDream's Avatar
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From: California
Car: Formula 350
Transmission: T56
Re: Vortec 350 build goes 7.456 in 1/8 mile

??? Seriously? Take that thing to a real track.
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Old Aug 30, 2009 | 04:35 PM
  #8  
SpitotRs305's Avatar
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Car: 91 RS
Engine: 350 vortec
Transmission: T-5
Axle/Gears: not the best not the worst
Re: Vortec 350 build goes 7.456 in 1/8 mile

seems like 425FT to hit 75 MPH with the 700r4 that converter 1-2shift at 6500 and finishing at 6250RPMS right around 420FT

1/8mile time would have been ~8.582 @88.0MPH

1/4 13.06@110MPH

Last edited by SpitotRs305; Aug 30, 2009 at 04:41 PM.
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Old Aug 30, 2009 | 04:50 PM
  #9  
danielmonster's Avatar
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Joined: Oct 2006
Posts: 56
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From: Mississippi
Car: 1985 IROC
Engine: lb9
Transmission: 700R4 B&M shiftkit
Axle/Gears: 3.42s
Re: Vortec 350 build goes 7.456 in 1/8 mile

that about what i've been getting on the gtech for 1/4 mile

Last edited by danielmonster; Aug 30, 2009 at 04:54 PM.
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Old Aug 30, 2009 | 04:55 PM
  #10  
danielmonster's Avatar
Thread Starter
Junior Member
 
Joined: Oct 2006
Posts: 56
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From: Mississippi
Car: 1985 IROC
Engine: lb9
Transmission: 700R4 B&M shiftkit
Axle/Gears: 3.42s
Re: Vortec 350 build goes 7.456 in 1/8 mile

I'm gonna swap the vortecs out for a set of AFR 195s and get some 3.73s and DRs and hopefully hit low 12s in the 1/4
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Old Aug 30, 2009 | 05:04 PM
  #11  
SpitotRs305's Avatar
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Joined: Oct 2006
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Car: 91 RS
Engine: 350 vortec
Transmission: T-5
Axle/Gears: not the best not the worst
Re: Vortec 350 build goes 7.456 in 1/8 mile

you are running the CS290HR12 right? 8-306-8?
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Old Aug 30, 2009 | 05:05 PM
  #12  
danielmonster's Avatar
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Joined: Oct 2006
Posts: 56
Likes: 0
From: Mississippi
Car: 1985 IROC
Engine: lb9
Transmission: 700R4 B&M shiftkit
Axle/Gears: 3.42s
Re: Vortec 350 build goes 7.456 in 1/8 mile

ya thats my cam
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