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Holley cab tuning
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Ranchand
New User
| Posts: 13
| Joined: 12/07
Posted: 04/22/08
07:11 AM
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I have a Holley 2300 700 cfm, mechnical, double pumper on a sock ZZ4 driving a 5 speed trans. I have a part throttle stumble at crusing speeds in high gear. I have rejetted the primary from 66 to 63 jets - no change. Plugs appear slightly rich. Timing is 36 degrees at 3000 rpm with a base timing of 10 degrees. Anybody got any suggestions?
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wieder
User
| Posts: 214
| Joined: 03/08
Posted: 04/22/08
07:32 AM
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A ZZ4 has a mild cam,do you have access to a 600cfm to try?I think your max rpm is around 52-5500rpm with the 208int duration roller.67-68 primary jets in a 600 is good place to start,get a tuning kit they're a good buy compared to buying parts one at a time.Play with accelerator pump cams also,a 6.5-7.5 powervalve should be close to start with.The 700 might be to lazy for your combo. WIEDER
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BBMAN
New User
| Posts: 33
| Joined: 04/08
Posted: 05/15/08
08:01 AM
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If it's rich at idle along with the part throttle stumble you may have a blown power valve or wrong power valve.
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