No, you don't need another plate, just need to redo your jetting and maybe timing.
What jets do you have available?
Nitrous 1970 Cuda
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Re: Nitrous 1970 Cuda
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 ??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?
1970 Super Cuda 496 Indyheads
ET 9.32@148 1.42 60ft (250 shot )
ET 9.32@148 1.42 60ft (250 shot )
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Re: Nitrous 1970 Cuda
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
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
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Re: Nitrous 1970 Cuda
john .. now i have 74 of nitrous and 93 of fuel !!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
1970 Super Cuda 496 Indyheads
ET 9.32@148 1.42 60ft (250 shot )
ET 9.32@148 1.42 60ft (250 shot )
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- Joined: Tue Jul 24, 2012 2:07 pm
Re: Nitrous 1970 Cuda
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
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 )
ET 9.32@148 1.42 60ft (250 shot )
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- Posts: 162
- Joined: Tue Jul 24, 2012 2:07 pm
Re: Nitrous 1970 Cuda
1970 Super Cuda 496 Indyheads
ET 9.32@148 1.42 60ft (250 shot )
ET 9.32@148 1.42 60ft (250 shot )
Re: Nitrous 1970 Cuda
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 !!!!!
That thing looks and runs great
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
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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