Nitrous 1970 Cuda

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raffaplymouth
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Nitrous 1970 Cuda

#1 Post by raffaplymouth » Fri Feb 07, 2014 2:30 pm

Hello Guys .. Im Raffaele from Italy .. I have a 70 Cuda with 496 Big block , my best ET is 10.33@135 mph .. This is my combo :

440-496 stroker
Indyheads cnc ported ez295
12.75 cr with ross pistons flat top
Roller camshaft compcams
Roller rockers harland
TTI headers 3,5"
Single plane Intake with 1050 quick fuel
Edelbrock nitrous system with 250 hp jets
Msd 6AL with timing retard
Activation is with delay box set at 2.8 sec after starting
Transmission 727 torque monster kit
Ultimate converter 5000 rpm stall
Detroit locker with 4.10 ratio

I accept any advice !!
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

#2 Post by John_Heard » Sat Feb 08, 2014 8:03 am

Have you tried your plate out yet? You should be able to drop well into the 9's with a small shot I'd think.

raffaplymouth
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Re: Nitrous 1970 Cuda

#3 Post by raffaplymouth » Sat Feb 08, 2014 2:18 pm

John_Heard wrote:Have you tried your plate out yet? You should be able to drop well into the 9's with a small shot I'd think.
Plate out ???? I dont know plate out .. Sorry i dont understand
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

#4 Post by raffaplymouth » Sat Feb 08, 2014 2:33 pm

raffaplymouth wrote:
John_Heard wrote:Have you tried your plate out yet? You should be able to drop well into the 9's with a small shot I'd think.
Plate out ???? I dont know plate out .. Sorry i dont understand
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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

#5 Post by John_Heard » Sat Feb 08, 2014 2:36 pm

Have you tried the "Edelbrock nitrous system with 250 hp jets " out yet? I assumed it was a plate.

raffaplymouth
Posts: 162
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Re: Nitrous 1970 Cuda

#6 Post by raffaplymouth » Sat Feb 08, 2014 2:49 pm

John_Heard wrote:Have you tried the "Edelbrock nitrous system with 250 hp jets " out yet? I assumed it was a plate.
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image.jpg
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

#7 Post by raffaplymouth » Sat Feb 08, 2014 2:52 pm

raffaplymouth wrote:
John_Heard wrote:Have you tried the "Edelbrock nitrous system with 250 hp jets " out yet? I assumed it was a plate.
If you see the picture of my plate .. Is a eddy plate with 102 nitrous jet and 108 fuel jet
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

#8 Post by John_Heard » Sat Feb 08, 2014 4:42 pm

Jetting is probably way off base. I bet it's very fat. There's your 9 second pass right there with some tuning.

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Re: Nitrous 1970 Cuda

#9 Post by raffaplymouth » Sun Jul 20, 2014 3:05 pm

j
John_Heard wrote:Jetting is probably way off base. I bet it's very fat. There's your 9 second pass right there with some tuning.
Hi john ! i tried in may with 200 and 250 hp jet .. no change ! best ET was 10.00 with roll cage install !!
i dont understand jetting off base ?? 200 HP jetting is 78 nitrous and 93 fuel !!
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

#10 Post by raffaplymouth » Sun Jul 20, 2014 3:13 pm

Guys .. this is 10.06 inside @138 kmh ..... my goal is 9.90 !!!


https://www.youtube.com/watch?v=tQdvafCC2yA
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

#11 Post by John_Heard » Sun Jul 20, 2014 10:00 pm

raffaplymouth wrote:j
John_Heard wrote:Jetting is probably way off base. I bet it's very fat. There's your 9 second pass right there with some tuning.
Hi john ! i tried in may with 200 and 250 hp jet .. no change ! best ET was 10.00 with roll cage install !!
i dont understand jetting off base ?? 200 HP jetting is 78 nitrous and 93 fuel !!
78 Nitrous and 93 Fuel is what people used to use like 10 years ago that were crazy fat. What kind of nitrous setup do you have? More than likely you need something more like 78 N / 60 Fuel.

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Re: Nitrous 1970 Cuda

#12 Post by raffaplymouth » Mon Jul 21, 2014 4:24 pm

John_Heard wrote:
raffaplymouth wrote:j
John_Heard wrote:Jetting is probably way off base. I bet it's very fat. There's your 9 second pass right there with some tuning.
Hi john ! i tried in may with 200 and 250 hp jet .. no change ! best ET was 10.00 with roll cage install !!
i dont understand jetting off base ?? 200 HP jetting is 78 nitrous and 93 fuel !!
78 Nitrous and 93 Fuel is what people used to use like 10 years ago that were crazy fat. What kind of nitrous setup do you have? More than likely you need something more like 78 N / 60 Fuel.
Yes this is the jet number that i have found on my edelbrock nitrous kit ... Have around 8/10 years !!
1970 Super Cuda 496 Indyheads
ET 9.32@148 1.42 60ft (250 shot ) :shock:

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Mike Peters
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Re: Nitrous 1970 Cuda

#13 Post by Mike Peters » Thu Jul 24, 2014 3:44 pm

Listen to John and his recommendations for jet size with your nitrous plate.
"If winning was easy, losers would be doing it"

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Re: Nitrous 1970 Cuda

#14 Post by John_Heard » Thu Jul 24, 2014 4:03 pm

It's so fun seeing how much difference a correct tune up will make. It'll be an eye opener for sure lol..

What is your base timing on this car on motor only, and how much are you currently pulling for your nitrous? Do you have something that retards the timing when your nitrous activates?

Your edelbrock tuneup that came with your plate is junk, I'd bet we can make it go quicker on an even smaller jet than you're now using.

raffaplymouth
Posts: 162
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Re: Nitrous 1970 Cuda

#15 Post by raffaplymouth » Fri Jul 25, 2014 1:36 pm

John_Heard wrote:It's so fun seeing how much difference a correct tune up will make. It'll be an eye opener for sure lol..

What is your base timing on this car on motor only, and how much are you currently pulling for your nitrous? Do you have something that retards the timing when your nitrous activates?

Your edelbrock tuneup that came with your plate is junk, I'd bet we can make it go quicker on an even smaller jet than you're now using.
i have older nitrous plate edelbrock buy in 2006 .. i have 78 nitrous jet and 94 fuel jet ...,total timing is 35 degree 5 degree of retard whe nirous is actived ... need install new plate ??
1970 Super Cuda 496 Indyheads
ET 9.32@148 1.42 60ft (250 shot ) :shock:

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