Need timing help on E85 GT40 motor - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 4 Old 07-30-2012, 03:23 PM Thread Starter
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Need timing help on E85 GT40 motor

Helping my friend tune his quarter horse for the E85.

Combo is
Stock forged 302 shortblock
F-cam
Head studs
Felpro 9333 head gaskets
Fresh Gt40 heads with new crane beehive springs
1.7 cobra pedestal rockers
Edelbrock 5.0 performer intake
60lb injectors
on3 turbo kit with 76mm ceramic ball bearing turbo

Had it out yesterday. We have 26 total in @2000 RPM and back down to 18 total @3500-16000. Pulls like crazy with the Lambda at about .83, going to try getting that down to about .75 Lambda. Keeping an eye on the Injector DC, we were only at about 70% yesterday at 5900 RPM.

Only about 10# of boost. Cracking the block not withstanding, how much timing can we put into this thing with E85 at 10PSI?


1989 LX 5.0 - 333 Mexican block, Eagle 4340 neutral3.25" crank, Probe SRS 9cc dome .040 psitons AFR 185 Comp heads, FTI HR cam 239/244 613/613, Edelbrock Victor 5.0, 90mm TB, BBK 1 3/4, C4 and 4500 Circle D converter, 4.10 gears

2012 GT/CS 5.0 - Yellow Blaze Tri-Coat metalic, A6, HID.
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post #2 of 4 Old 08-04-2012, 07:50 PM Thread Starter
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Well we cranked in another 3 degrees under boost to a total of 21 and the MPH picked up from 121 to 124. Crank stayed in the block and the head gaskets are still intact.

Needs a transbrake and more stall. 2000 on the footbrake leads to 1.86 60ft times.


1989 LX 5.0 - 333 Mexican block, Eagle 4340 neutral3.25" crank, Probe SRS 9cc dome .040 psitons AFR 185 Comp heads, FTI HR cam 239/244 613/613, Edelbrock Victor 5.0, 90mm TB, BBK 1 3/4, C4 and 4500 Circle D converter, 4.10 gears

2012 GT/CS 5.0 - Yellow Blaze Tri-Coat metalic, A6, HID.
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post #3 of 4 Old 08-04-2012, 08:28 PM
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I honestly don't see why you couldn't throw another 3-4 degrees at it if it's on corn, that stuff is like race gas. But you're probably rapidly approaching the limits of that block as it is.

Turbocharged 87 GT T Top
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post #4 of 4 Old 08-05-2012, 04:03 PM Thread Starter
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I wanted to go another 2-3 degrees but my buddies wife was tired of being the the track. We have no love for this short block

Maybe next time.

1989 LX 5.0 - 333 Mexican block, Eagle 4340 neutral3.25" crank, Probe SRS 9cc dome .040 psitons AFR 185 Comp heads, FTI HR cam 239/244 613/613, Edelbrock Victor 5.0, 90mm TB, BBK 1 3/4, C4 and 4500 Circle D converter, 4.10 gears

2012 GT/CS 5.0 - Yellow Blaze Tri-Coat metalic, A6, HID.
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