Questions, Holden 308 V8

[VHSLE CRUISERParticipant View build HERE Member since: October 1, 2016 Posts: 38]

My car is a VH Commodore, mild 308 running a Holley 600DP carby, front squirters=28/rear squirters=32, power valve=6.5

1. My carby has straight booster rings,would there be benefit to changing to annular booster rings ?

2. Running an edelbrock performer rpm intake manifold, is a dual plan but is notched out, is there any benefit changing to the same intake manifold but without the notched part ?

3. Carby spacers, open vs 4 hole , which is better for fuel atomizing or is this dependent on the engine combo ?

4. Ported vacuum vs manifold vacuum ?

5. Will running a carby without gaskets underneath/between the carby and intake manifold cause any issues long term ?

6. What is the general guideline for both initial and total timing for a mild 308 ?

Cheers,

[VHSLE CRUISERParticipant View build HERE Member since: October 1, 2016 Posts: 38]

No replies…

Cheers,

[ImmortalityParticipant 97 HSV Senator 185i 02 VX L67 Calais View build HERE Member since: August 31, 2015 Posts: 535]

This is probably a question better asked on the AV8 forum where there are a lot experienced guys with these sorts of engines/setups.

 

Standard initial timing on a 308 is 6°BTDC however it’ll probably run better with a little more initial timing.  IT really comes down to the cam/compression you have as well as the fuel you are running.

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