Holley Jetting
#376189
07/15/09 02:20 PM
07/15/09 02:20 PM
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Joined: Feb 2008
Posts: 992
Simi Valley, CA
MoparJ
OP
super stock
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OP
super stock
Joined: Feb 2008
Posts: 992
Simi Valley, CA
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I am running A 650 double pumper on my 383 in my Charger. The motor has stock heads, stock cam, Hooker headers, and a Edelbrock Performer 383 intake. I am running points, which are adjusted decently.
I am running 67s in the primaries and 70s at most in the secondaries. It feels a bit soft power wise, compaired to how it should feel and the motor is otherwise solid and timing is set ok.
Should I bump jetting up, to say, 70 on the primaries and 75-76 on the secondaries, or am I were I should be?
2016 Ram 1500 Crew Cab: 5.7, 65RFE, 4.56 gears with locker, Hemifever tuned, AFE intake, 87mm throttle body, JBA headers, 3" Flowmaster exhaust, split to dual 2.5" exits. 13.57 best ET so far.
Searching for new A or B Body Project!
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Re: Holley Jetting
[Re: 1_WILD_RT]
#376191
07/15/09 02:47 PM
07/15/09 02:47 PM
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Joined: Feb 2008
Posts: 992
Simi Valley, CA
MoparJ
OP
super stock
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OP
super stock
Joined: Feb 2008
Posts: 992
Simi Valley, CA
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Quote:
FWIW My Challenger has a 650DP on it, stock cam, manifolds, Performer RPM & I've got 64's in front.. But I opened the PVCR .002 so it runs about the same A/F ratio under power but it's leaner & cleaner in cruise mode.. Personally I left the 76's in the rear, when your in the throttle enough to bring in the secondaries you probably want fuel so why lean it out 6 jet sizes?
The secondaries came with 70s from the factory. Hell, I run 70s in the primaries of my 600 single feed, with a plate in the rear on my 318 with a warm cam, so I figure a big block would most likely prefer a bit more secondary jetting.
2016 Ram 1500 Crew Cab: 5.7, 65RFE, 4.56 gears with locker, Hemifever tuned, AFE intake, 87mm throttle body, JBA headers, 3" Flowmaster exhaust, split to dual 2.5" exits. 13.57 best ET so far.
Searching for new A or B Body Project!
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Re: Holley Jetting
[Re: 1_WILD_RT]
#376193
07/15/09 08:17 PM
07/15/09 08:17 PM
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Joined: Jan 2003
Posts: 9,982
Ansonia, CT
CJK440
master
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master
Joined: Jan 2003
Posts: 9,982
Ansonia, CT
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Unless you want to fool with the power valve channel restrictions, you want approx an 8 jet stagger from front to rear with a Holley that has only a Power valve in the primary metering block.
As was pointed out, the factory installed a 67 and 76 which is a 9 jet size difference. Keep the relationship.
2017 Contusion Blue Challenger T/A 392 M6 "BLKNBLU"
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Re: Holley Jetting
[Re: CJK440]
#376194
07/16/09 11:41 AM
07/16/09 11:41 AM
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Joined: Feb 2008
Posts: 992
Simi Valley, CA
MoparJ
OP
super stock
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OP
super stock
Joined: Feb 2008
Posts: 992
Simi Valley, CA
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Quote:
Unless you want to fool with the power valve channel restrictions, you want approx an 8 jet stagger from front to rear with a Holley that has only a Power valve in the primary metering block.
As was pointed out, the factory installed a 67 and 76 which is a 9 jet size difference. Keep the relationship.
Is this true even with a Street Avenger double pumper?
2016 Ram 1500 Crew Cab: 5.7, 65RFE, 4.56 gears with locker, Hemifever tuned, AFE intake, 87mm throttle body, JBA headers, 3" Flowmaster exhaust, split to dual 2.5" exits. 13.57 best ET so far.
Searching for new A or B Body Project!
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