E85 4150 tunnel ram tuning
Posted: Sun Aug 08, 2021 7:31 pm
I am trying to get a new tunnel ram setup lined out and ran it for the 1st time last night . According to racepak afr data it is way lean on the tbrake and lean at the bottom of every gear. It does richen up at the top of every gear. Here are the specs:
376 ls3 10.2 to 1 7500 rpm max
Msd dig 7/crank trigger 29.5 degrees timing
Holley hi ram/ported with Reher Morrison shear plates
Holley 750 xp body/ 1.38 Venturi/ 1.68 throttle blade
Billet 5 hole emulsion metering blocks
Iab .057/ifr .038 - low location
Mab .031 mj Holley 93
Kill bleed .024 /emulsion .028 plug .028 plug plug
Hollley down leg booster /channel .180
Metering block booster channel .176
Racepak data:
Tbrake 5450 rpm 1.15 lambda
1st gear starts at 1.02 and ends at .090
2nd gear starts at 1.09 and ends at .090
3rd gear starts at 1.11 and ends at .096.
What would be a good place to start on the main air bleed and main jet ?
376 ls3 10.2 to 1 7500 rpm max
Msd dig 7/crank trigger 29.5 degrees timing
Holley hi ram/ported with Reher Morrison shear plates
Holley 750 xp body/ 1.38 Venturi/ 1.68 throttle blade
Billet 5 hole emulsion metering blocks
Iab .057/ifr .038 - low location
Mab .031 mj Holley 93
Kill bleed .024 /emulsion .028 plug .028 plug plug
Hollley down leg booster /channel .180
Metering block booster channel .176
Racepak data:
Tbrake 5450 rpm 1.15 lambda
1st gear starts at 1.02 and ends at .090
2nd gear starts at 1.09 and ends at .090
3rd gear starts at 1.11 and ends at .096.
What would be a good place to start on the main air bleed and main jet ?