Mike Gaines
Well-Known Member
- Local time
- 2:30 PM
- Joined
- Apr 17, 2014
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- 2,098
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- Location
- Ahwahnee, (Fresno) California
Ok...its winter time coming a I need to start a thread on something we all need to know and understand...
What benefit ( for a drag race car only...nothing to do with a street/strip car) does removing the primary power valve on a Holley and then jetting up the primary side of the carb.
For example I have an 850 Demon with a 6.5 power valve with 83 primary and 90 secondary jets. All my pals are telling me to block off the power valve and jet to 88/88 square (or something like that)
I would appreciate the tons of knowledge you guys have to share it on this thread and educate all of us on the "power valve" deal.
Thanks..
PS: Working on the final tune on my new 505" .... mainly jetting and timing now, no traction problems...1.55 60' with front wheels up and NO breaking loose on the slick. My 1.55 60' is close to my target of 1.50 60' to end up with a 10.80 at 123-125 Qtr Mile time....but not jetted or timed right yet....Running 34 degrees with 50/50 mix of 91 pump and VP 110 for a net of 100 Octane.
Has run a 10.98 at 120.6 on the 5th run...
What benefit ( for a drag race car only...nothing to do with a street/strip car) does removing the primary power valve on a Holley and then jetting up the primary side of the carb.
For example I have an 850 Demon with a 6.5 power valve with 83 primary and 90 secondary jets. All my pals are telling me to block off the power valve and jet to 88/88 square (or something like that)
I would appreciate the tons of knowledge you guys have to share it on this thread and educate all of us on the "power valve" deal.
Thanks..
PS: Working on the final tune on my new 505" .... mainly jetting and timing now, no traction problems...1.55 60' with front wheels up and NO breaking loose on the slick. My 1.55 60' is close to my target of 1.50 60' to end up with a 10.80 at 123-125 Qtr Mile time....but not jetted or timed right yet....Running 34 degrees with 50/50 mix of 91 pump and VP 110 for a net of 100 Octane.
Has run a 10.98 at 120.6 on the 5th run...