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  #16  
Old 04-21-2013, 11:32 PM
twekd1 twekd1 is offline
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Quote:
Originally Posted by BOSS 429 View Post
what rpm are you crossing the line at? 3.70 gear might not be enough?

i had a 5700 rev chip and i was bouncing off the limiter right at the end.
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  #17  
Old 04-22-2013, 08:25 AM
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Originally Posted by bigblok86ranger View Post
Try 7.5 psi fuel pressure, hopefully you have a 1/2" or -8 minimum fuel lines.
What needle and seats are in the carbs? Put the good viton tipped .150" seats in if you don't have them already and get the fuel pressure up. I think the better needle seats will allow ~9.5 psi. Someone will correct me if I am wrong.

The Holley Blue is only rated to around 550hp I ran one with around 690hp but with only one carb you may need to upgrade your pump.
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  #18  
Old 04-22-2013, 09:58 PM
twekd1 twekd1 is offline
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Correction i have a black pump on the carbs and a blue pump for the nitrous.

So besides fuel pressure what else can it be? What number squirters should i run and cam color? (it has the large 50cc accelerator pumps)
watching the car i see its not puffing fuel smoke when i stall it out but it does when i floor it.

I am sure the carbs used to run alcohol, could something be drilled out that i should look for?

The ignition system is a old school msd 7al-2, msd pro billet distributor, and a msd pro power coil.
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  #19  
Old 04-30-2013, 01:28 PM
A70Maverick A70Maverick is offline
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If its doing it's surging at WOT, the squirters or pump cams have nothing to do with it. If they were Alky carbs before, the metering blocks and main body passages are probably too big. The Surging sounds like a fuel delivery problem to me....
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  #20  
Old 05-09-2013, 10:52 PM
twekd1 twekd1 is offline
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so after playing with jets last time out I realized carb tuning is expensive and difficult. I am all in now i purchased 2 full jet kits and 2 full accelerator pump tuning kits. I also purchased a Innovative motorsports LM2 data logger with 2 o2 sensors. it has the capability of adding a ton of sensors. right now it will have rpm and air fuel in each header collector. wish me luck
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  #21  
Old 05-10-2013, 02:35 PM
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A little late now but I would say get a victor jr. manifold with a 1050 dom. and you good to go.

You would need a pump pressure of at least 12-15psi to handle demand. Need 6 1/2 to 7 1/2 psi from regulator to carb. Check float height adjustment. (This is for single carb tune but you can get the ideal)
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  #22  
Old 05-12-2013, 02:22 AM
A70Maverick A70Maverick is offline
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Pull the motor out and dyno it. Best $$ you'll ever spend! You already spent WAY more than a dyno session trying to figure it out!
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