advance kind of advance curve expected

builtbychevy · #1 09-21-2012, 07:47 PM

new 383 sbc 10.3:1 91 ron 160* water thermo stat 180* oil temps. ported dart heads 4500# truck 4.11 ring ratio
cam has .566lift in .543 lift ex, 243 249 duration, 108* lobe sep
manual trans
has htd pulleys and total seal rings with coated pistons
rings are gapped for 250 shot but not squeezing right now

Right now I have an 6530 box w 85551 dizzy and 8223 coil.

what springs and bushings would you recommend?

Gaz64 · #2 09-22-2012, 04:52 AM

Lock the dizzy out and use the 6530 program.

20 at idle, 32-35 at 3500, tune from there.

msdtech1955 · #3 09-24-2012, 08:43 AM

call the cam manufacture and ask what is the suggested
idle-total timing for that motor.

builtbychevy · #4 09-30-2012, 12:06 PM

Comp Cams Says: 12-16 @ 1450-1500 rpm
32-38 @ 2800-3000 rpm

msdtech1955 · #5 10-01-2012, 08:14 AM

what springs and bushings would you recommend?

silver bushing ,with the light silver springs.

Gaz64 · #6 10-02-2012, 01:40 AM

Quote:

Originally Posted by builtbychevy

new 383 sbc 10.3:1 91 ron 160* water thermo stat 180* oil temps. ported dart heads 4500# truck 4.11 ring ratio
cam has .566lift in .543 lift ex, 243 249 duration, 108* lobe sep
manual trans
has htd pulleys and total seal rings with coated pistons
rings are gapped for 250 shot but not squeezing right now

Right now I have an 6530 box w 85551 dizzy and 8223 coil.

what springs and bushings would you recommend?

Springs and bushing? The 6530 is programmable.

Note below.

Quote:

Originally Posted by Gaz64

Lock the dizzy out and use the 6530 program.

20 at idle, 32-35 at 3500, tune from there.