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View Full Version : Blown 5.7 Hemi


Tom Manner
02-21-2012, 11:18 AM
5.7 Hemi, 9.6 compression, caburated, mild cam.
Looking for a good starting place on a timing curve.
Where can I get the figures used for a LS9 Chevy shown on the MSD charts?

msdtech1955
02-22-2012, 09:22 AM
what size blower? over drive? the more info you give me ...the better we can help.

we actually did some testing with oddy's automotive..
with a 8-71 and twin 750 carbs.

Tom Manner
02-22-2012, 10:46 AM
The blower is a Magna Charger model 122
The blower pulley is 3.4" so the drive ratio is 2.06 to 1.
The MSD system shows 8 lb. of boost.

Cam specs; Duration, I- 268 deg.
E- 274 deg.
Separation 112 deg.