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I have tried nr 4 in the tuning chart and I got AFR 11,8-12,2 in 50mph. Should I try with smaller primary jets? How much under stock jets can I go? I have the biggest (119) on the secundary to keep wot AFR.

I'm running "pure gasoline stoichiometric" it's same like our Swedish 95 octane.

I tried in my desperation with a smaller jet 110 and 73x47 metering rod and it made a leaner AFR up to 43mph and 1700rpm but over 1700rpm and 50mph it goes richer again. I think my carb runs in HS circuit over 1700 rpm. What can I do now, smaller jets on the secondary? But it should affect the...

I looked at it and it gives more fuel it the top hole and least in the bottom hole. The top hole allows the pump to make a deeper pump and then gives more fuel.

I had the orange 5" but now I tried the yellow 4" but no difference. No I haven't tried to connect the vacum gauge while driving, good idea. I have to get a longer hose for the gauge before I can try.

I already have it in the top hole. I turned the idle mixing screws 1/4 turn richer and the hesitation disappeared. But I can't get it leaner at cruise speed (se my latest post) I have also tried smaller primary main jets 113" and the 73x47 metering rod and it still runs at about 11.9-12,5 AFR in...

It should work in similar way with an edelbrock than a holley, I gues the biggest difference is the metering rods. I had a holley 850 dp before and a friend helped me tune it and the car runs good but took way to much fuel (3,6 litre/ 10km, think it's 6,5mpg) in 50 mph economy cruise and the...

Hi! I'm tuning my edelbrock 750 (1407) with a wideband afr sensor and need help to understand the values I got from it. Idle 13,4-13,6 afr Cruise in 50 mph 10,9-11,1 afr Vot 12,7-13,2 afr I think it's too rich in cruise speed and a little bit too lean at wot. Too rich at idle to but if I Lean...

How many do I need? How many do I need?

Is it right? https://www.npdlink.com/product/light-filter-dash-housing/208033

I have replaced all of them so they should be ok.

What's NPD? Couldn't find when I'm googling.

I have already replaced them but the light is weak and it's only a few that lights at all. I think the problem is the heat from the bulb after many years. I also left the turn signal indicator.

You were right. The gauges works again after I just rubbed with my fingers on the voltage regulators connection. Some owner before me had put electric tape on it so probably there are some issue with it. I have ordered a new one and also a new circuit from ebay because my instrument lights also...

Hello I have a problem with my original gauges in my mach 1 -72 after I took my instrument cluster out. The temp gauges shows that the engine temp is too high when the engine gets hot. The meter goes to the top even if the engine is not overheated. It's happening after a few minutes when i drive...

Hello! Loking for a working tachometer for my mach 1 - 72. Does anyone know where to find one?

I'm not sure about the rear end but I think it is 2:73. I have a c6 with 10" converter with a little higher stall speed. I'm restoring my carb so maybe it will make it a little better too.

I was afraid to get that answer. I have to think about it. I drove 75km on country roads and it cost me 80$. But it is a wery funny car with a great sound😁

Hello! My Mach 1 1972 with 460 takes way too much gasoline. When i checked the consumption it took 4 litres/10km in 50mph on careful country road driving. This is my engine specs: Pistons:trw 2443 Intake manifold: offenhauser portosonic Carb: Holley 850dp. Main nozzle 71 in front and 75 in back...

Hello I have a mustang mach 1 1972 with a 429/460. My power steering pump is still healing after renovation at a company, so now I was thinking of buying a new one but do not know which ones are suitable. I have original servo hoses so pumps that fit the motor do not fit with the hoses. I...