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Carb Jetting with sealed scoop #2074615 05/16/16 05:29 PM 05/16/16 05:29 PM
Joined: Feb 2006 Posts: 474 Alberta, Canada 451Guy OP mopar
451Guy OP mopar Joined: Feb 2006 Posts: 474 Alberta, Canada	What are you guys doing with jetting when you install a sealed hood scoop? Last edited by 451Guy; 05/16/16 05:30 PM. Thanx 451 Guy 512 cu in 71 Demon Super Street Car - NO LONGER - Broke Crank Best ET 9.57 @ 139.96 451 cu in Pump Gas - 71 Demon Super Street Car Best ET 9.99 @ 136.80 512 cu in 69 Charger R/T Best ET 11.39 @ 118.11

Re: Carb Jetting with sealed scoop [Re: 451Guy] #2074623 05/16/16 05:43 PM 05/16/16 05:43 PM
Joined: Jan 2003 Posts: 13,363 Marion, South Carolina [><] an8sec70cuda I Live Here
an8sec70cuda I Live Here Joined: Jan 2003 Posts: 13,363 Marion, South Carolina [><]	Been a long time, but I think I jetted up 2 sizes all around when I sealed my old 6 pack hood to the carb. CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax

Re: Carb Jetting with sealed scoop [Re: 451Guy] #2074633 05/16/16 05:53 PM 05/16/16 05:53 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart I Live Here
Thumperdart I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Totally dependent on how the carb is now but something few talk about is the "dirty" or turbulent air that the bowl vents see.......... Last edited by Thumperdart; 05/16/16 05:53 PM. 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Carb Jetting with sealed scoop [Re: Thumperdart] #2074748 05/16/16 09:54 PM 05/16/16 09:54 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Its gonna make a difference on how much clearance you have from the carb to the scoop and weather you have a ideal entry on the carb

Re: Carb Jetting with sealed scoop [Re: 451Guy] #2075126 05/17/16 02:30 PM 05/17/16 02:30 PM
Joined: Dec 2014 Posts: 304 Florida M Mark Whitener enthusiast
Mark Whitener enthusiast M Joined: Dec 2014 Posts: 304 Florida	http://racingfuelsystems.myfunforum.org/viewtopic.php?f=31&t=15 Mark Whitener [url=www.racingfuelsystems.com[/url]

Re: Carb Jetting with sealed scoop [Re: MR_P_BODY] #2075135 05/17/16 02:39 PM 05/17/16 02:39 PM
Joined: Feb 2006 Posts: 474 Alberta, Canada 451Guy OP mopar
451Guy OP mopar Joined: Feb 2006 Posts: 474 Alberta, Canada	In the past I ran a 6 pack hood scoop that was not sealed with a 11' x 6' Tall K&N Filter. The filter was about 1/4" from the scoop. I installed a Pro Stock hood scoop. I am running the same filter but now there is an 1" to 1 1/2" above the air cleaner to the scoop. The bottom of the scoop is 5 inches off the hood in an attempt to get into the clean air as per an article that I saw written by Rick Jones. I am curious because every one talks about how there cars picked up when they sealed the scoop. Mine ran identical. Thinking it need to be jetted up. Also the car is horribly inconsistent so I am thinking it is lean. Last edited by 451Guy; 05/17/16 03:01 PM. Thanx 451 Guy 512 cu in 71 Demon Super Street Car - NO LONGER - Broke Crank Best ET 9.57 @ 139.96 451 cu in Pump Gas - 71 Demon Super Street Car Best ET 9.99 @ 136.80 512 cu in 69 Charger R/T Best ET 11.39 @ 118.11

Re: Carb Jetting with sealed scoop [Re: 451Guy] #2075141 05/17/16 02:49 PM 05/17/16 02:49 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Originally Posted By 451Guy In the past I ran a 6 pack hood scoop that was not sealed with a 11' x 6' Tall K&N Filter. The filter was about 1/4" from the scoop. I installed a Pro Stock hood scoop. I am running the same filter but now there is an 1" to 1 1/2" above the air cleaner to the scoop. The bottom of the scoop is 5 inches off the hood in an attempt to get into the clean air as per an article that I saw written by Rick Jones. I am curious because every one talks about how there cars picked up when they sealed the scoop. Mine ran identical. Thinking it need to be jetted up. Also the car is horribly inconsistent so I am thinking it is lean. If you were peaked out before MOST will need to jet up a couple of sizes.. I did when I sealed up... on the last scoop(the one in my sig) I was close enough that it really didnt change(that was going from a sealed scoop to another sealed scoop) but the vertical clearance and the ideal entry that is mounted on the scoop ended up with 1 jet fatter

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