What is the timing degree on a freshly rebuilt 318 with rv cam, bored .30 over on pistons holley 600 cfm 4 barrel on a 1975 motor
Timing degree
- Thread starter 65 CUDA
- Start date
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I don't think that much, with a so called RV cam
Probably a little much.....unless you're using full manifold vacuum on the vacuum advance. We can get you closer if you post the cam "SPECS" instead of "RV cam". If that's all we have, your answers will be just as vague. Hit and miss.
I have vacuum hose plugged into the port on holley 600cfm carb at right top side of front fuel bowl going to vacuum advance on distributor
You sure that's not 204 and 214? ....and I assume it's on a 112 LSA? This works a lot better if you supply all the information.
| Advertised Exhaust Duration | 288 |
| Advertised Intake Duration | 278 |
| Cam Type | Hydraulic |
| Computer Controlled Compatible | Yes |
| Exhaust Duration at .050 inch Lift | 214 |
| Exhaust Valve Lift | 0.443" |
| Intake Duration at .050 Inch Lift | 204 |
| Intake Valve Lift | 0.421" |
| Lifter Type | Hydraulic |
| Lobe Separation | 112 |
That's a very decent grind for a street engine. That's what I thought it might be.
That sounds like the right spot. Ported vacuum. I would recommend that for a very mild engine like this. I would back it down to maybe 18 degrees initial and see how it performs.
Impossible to say, since you never said what your problem is.
65 Cuda,
[1] Warm up the engine
[2] put in gear if auto & chock the wheels
[3] loosen dist clamp & turn the dist SLOWLY CCW. That advances the timing.
[4] Keep going CCW until you have the highest idle rpm.
[5] Now check the timing. It will be well over 20 & could be over 30*.
[6] What ever it is, that is the best idle timing for THAT combo & you get that by using manifold connected vac adv.
All the people below are not wrong...or imagining things...
[1] Warm up the engine
[2] put in gear if auto & chock the wheels
[3] loosen dist clamp & turn the dist SLOWLY CCW. That advances the timing.
[4] Keep going CCW until you have the highest idle rpm.
[5] Now check the timing. It will be well over 20 & could be over 30*.
[6] What ever it is, that is the best idle timing for THAT combo & you get that by using manifold connected vac adv.
All the people below are not wrong...or imagining things...
start a 5 then dial it in by ear
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