Gap Please - Team Camaro Tech
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post #1 of 5 (permalink) Old Apr 26th, 04, 08:14 PM Thread Starter
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I have a new 383 with 10.5-1 with a complete MSD set up. I am using autolite plugs what gap should I use?

69 Camaro RS, 383ci,10.5-1 AFR 195's ported, Comp 286HR, 4340 forged Crank & Rods, JE Pistons, RPM Airgap, Holley 750 HP carb, 350 turbo w/ shift kit, 3000 Coan, Be cool, caltracs,12bolt 355 eaton posi..Best E.T. 12.22 @ 112

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post #2 of 5 (permalink) Old Apr 27th, 04, 12:55 AM
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With the HEI and MSD you can go as high as .065, I run .055 in mine. If you'r useing points and MSD I would say about .045. This is all with out power adders.

68 Camaro~LSx ~all motor
1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53
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post #3 of 5 (permalink) Old Apr 27th, 04, 03:39 AM
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.045-.050 would be my choice.

Your MSD box will fire about any gap reliably, but gaps wider than .050 have not been proven to increase power any (that I am aware of) and are much harder on your wires, cap, etc.

E85 racer and E85 carb builder

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68 Camaro, E85 powered 427" small block. 9.96 @ 133 MPH, 1.319 sixty foot on motor. 5.92 eighth @ 116 with a 1.42 sixty breaking beams with back tire on the bottle
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post #4 of 5 (permalink) Old Apr 28th, 04, 05:28 PM
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My experiance with HEi and MSD is over 55 and your cooking the coil to rotor button in the cap, the cap melts around the rotor button then spews crap all around inside the dist.

Just my experiance others may not have had this happen. Put the Gap at 50 and never had problems again.
Joe

"If you can leave black marks on a straight from the time you exit a corner till the time you brake for the next turn.......
Then, you have enough horsepower."
-Mark Donahue
My 67 Camaro Time Line
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post #5 of 5 (permalink) Old Apr 28th, 04, 05:36 PM Thread Starter
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I guess I should let everyone know that I am no longer using the HEI: I have the msd pro-billet 85551

69 Camaro RS, 383ci,10.5-1 AFR 195's ported, Comp 286HR, 4340 forged Crank & Rods, JE Pistons, RPM Airgap, Holley 750 HP carb, 350 turbo w/ shift kit, 3000 Coan, Be cool, caltracs,12bolt 355 eaton posi..Best E.T. 12.22 @ 112

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