Nitrous 1970 Cuda

General Nitrous Discussion

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John_Heard
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Re: Nitrous 1970 Cuda

#16 Post by John_Heard » Fri Jul 25, 2014 2:03 pm

No, you don't need another plate, just need to redo your jetting and maybe timing.

What jets do you have available?

raffaplymouth
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Re: Nitrous 1970 Cuda

#17 Post by raffaplymouth » Tue Aug 19, 2014 10:32 pm

John_Heard wrote:No, you don't need another plate, just need to redo your jetting and maybe timing.

What jets do you have available?
John sorry for my to late response ... if i redo my jetting i think change the AFR ... that look like ok .. you have a jet fuel chart correct ??
1970 Super Cuda 496 Indyheads
ET 9.32@148 1.42 60ft (250 shot ) :shock:

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John_Heard
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Re: Nitrous 1970 Cuda

#18 Post by John_Heard » Tue Aug 19, 2014 11:30 pm

Yes, if you change your jetting it should change your AFR.

No, I don't have a jet chart for your plate. Without flow testing it we have to guess at it, but our guess will certainly be an improvement over what the manufacturer supplied 8 years ago. I think the plate you have is probably similar to the Holley Big Shot plate, they do have a jet chart that should put you in the ball park. I don't know if edelbrock has updated their jetting charts or not, but Holley did a few years ago. Most likely you will need at the minimum a 10 jet stagger (bigger nitrous than fuel), and on most plates the bigger the jet the more stagger you'll need. For example, reversing the jets you have now 94 N/76 F would be a 18 jet stagger, probably not far off. But you may want to try a smaller shot first, like 80 nitrous or so? Depends on what jets you have available to work with.

http://goo.gl/ulGjXE

raffaplymouth
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Re: Nitrous 1970 Cuda

#19 Post by raffaplymouth » Wed Aug 20, 2014 2:18 am

John_Heard wrote:Yes, if you change your jetting it should change your AFR.

No, I don't have a jet chart for your plate. Without flow testing it we have to guess at it, but our guess will certainly be an improvement over what the manufacturer supplied 8 years ago. I think the plate you have is probably similar to the Holley Big Shot plate, they do have a jet chart that should put you in the ball park. I don't know if edelbrock has updated their jetting charts or not, but Holley did a few years ago. Most likely you will need at the minimum a 10 jet stagger (bigger nitrous than fuel), and on most plates the bigger the jet the more stagger you'll need. For example, reversing the jets you have now 94 N/76 F would be a 18 jet stagger, probably not far off. But you may want to try a smaller shot first, like 80 nitrous or so? Depends on what jets you have available to work with.

http://goo.gl/ulGjXE
john .. now i have 74 of nitrous and 93 of fuel !!
1970 Super Cuda 496 Indyheads
ET 9.32@148 1.42 60ft (250 shot ) :shock:

raffaplymouth
Posts: 162
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Re: Nitrous 1970 Cuda

#20 Post by raffaplymouth » Wed Sep 17, 2014 2:24 pm

GUYS ... MAKE THE RACE ONE WEEK AGO !! 9.70@143 MPH ! THIS IS MY COMBO ;

NEW JOHN COPE VALVE BODY
NEW 28 10.5 DRAG SLIK
NEW ALLUMINIUM CARBURETOS SCOOP
78-93 NOS FUEL JET
70%110 OCTANE and 30% 100OCTANE FUEL
NEW FRONT DAM SPOILER
FRONT END LOWERED OF 1 INCH

ELAPSED TIME DROPPED FROM 10.0 TO 9.70
1970 Super Cuda 496 Indyheads
ET 9.32@148 1.42 60ft (250 shot ) :shock:

raffaplymouth
Posts: 162
Joined: Tue Jul 24, 2012 2:07 pm

Re: Nitrous 1970 Cuda

#21 Post by raffaplymouth » Wed Sep 17, 2014 2:32 pm

1970 Super Cuda 496 Indyheads
ET 9.32@148 1.42 60ft (250 shot ) :shock:

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wikd69
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Re: Nitrous 1970 Cuda

#22 Post by wikd69 » Thu Sep 18, 2014 9:46 am

raffaplymouth wrote:GUYS ... MAKE THE RACE ONE WEEK AGO !! 9.70@143 MPH ! THIS IS MY COMBO ;

NEW JOHN COPE VALVE BODY
NEW 28 10.5 DRAG SLIK
NEW ALLUMINIUM CARBURETOS SCOOP
78-93 NOS FUEL JET
70%110 OCTANE and 30% 100OCTANE FUEL
NEW FRONT DAM SPOILER
FRONT END LOWERED OF 1 INCH

ELAPSED TIME DROPPED FROM 10.0 TO 9.70

WOO HOO !!!!!!!!!!!! Good for you !!!!! :thumb: :smt003 :smt003 :smt003

That thing looks and runs great :thumb:
1969 ProStreet Camaro RS Best 9.75@139 1.46 60'
Blown 427 BBC, TH400 w/Brake, Back-Half Ladderbar
Narrowed 12-Bolt, 4.10 Gears, Spool, Moser 33 Spline

http://www.marsh-racing.com/harrys_camaro-1.htm

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