spark timing

humaxxxMember

Hello,

Can somebody tell me what's the best sprak timing for the following engine

- 4 bolt block
- closed chamber 4V heads
- stock crank
- stock rods with ARP nuts & bolts
- pistons 0.030 over
- Comp cam 290HR (LSA 110, IC 106, lift 0.588, 230 @.050)
- 1,73 rockers
- Holley 750 sec vac
- Holley strip dominator, 1/2 inch spacer
- 1 7/8 primairies
- engine pull 9.5" vacuum idle
- ratio 10:1

This are mine thoughts:
17* initial
20* mech. total 37*
10* vacuum

Greeting

Frank (Holland)

11/22/161:18 PM

Original Post

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