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Old 02-11-2004, 10:17 AM   #1
302 LX Eric
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Arrow Am I under injected?

Most of you know what I'm running, but for those who don't, here's a quick and dirty breakdown:

331 stroker
10:1 compression
Andrerson N-41 cam
TFS TW heads with mild porting
TFS Street Heat Intake
75 mm TB
75 mm Pro-M
24# injectors w/155lph pump

I'm curious as to what you guys think about the 24# injectors. Are they holding me back? Should I step up to a 30# injector and 255 or 190 lph pump?

See my sig for ET. Race weight is around 3100 lbs.

Thanks,
E
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12.22 @ 114.31 mph - w/1.89 60'
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Old 02-11-2004, 01:09 PM   #2
Dark_5.0
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The injectors are fine. IMO and not in any way holding you back.

I would however upgradeb the fuel pump to a 190lph.

The only thing I see holding you back is your 60ft.

Get the 60ft down to a 1.70 and you would come damn close to an 11 second pass.
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Old 02-11-2004, 01:29 PM   #3
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Theres 1 way to tell for sure. Get to a dyno with a wide-band, or better yet, pick up a wide band from AFM and you can see what the A/F is while you are going down the track.

Andy
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Old 02-11-2004, 02:16 PM   #4
302 LX Eric
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I called Gregg Banish (turbolx) of Livernois / Detroit Speedworks a couple days ago to arrange for a complete dyno tune w/chip burn this April. It will be interesting to see what the wideband shows and to see how much power I'm leaving on the table.

I think I need slicks...this drag radial thing sucks for 60' times.

E
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1991 5.0 LX Coupe - 40,750 miles

331 cu. in. / Tremec 3550 / BFG Drag Radials

12.22 @ 114.31 mph - w/1.89 60'
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Old 02-11-2004, 07:35 PM   #5
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Default Re: Am I under injected?

Quote:
Originally posted by 302 LX Eric
Am I under injected?
The short answer is no. I put down 300RWHP on 19#rs. A buddy went a 9.98 with a 408 and some NOS and only had 24#'rs in


Mabey a bigger pump though....
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Old 02-11-2004, 08:28 PM   #6
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i agree with dark. just get a 190lph pump and definently get a dyno tune with a wide band.
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