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HO Street/Strip Carbs

I had a new quick fuel out of the box that was JUNK. Sent it back got my money back. I run an AED 750 HOM performance carb on my duster, and will never run anything else.

A 27" tire will do it at 6750 rpm.

How tall of a tire do you have? A 26" tire with 3.73 gears will go 145 mph at 7000 rpm. so if you have enough motor to make power to 7000 rpm you are good to go.

Converter, shocks, springs, gear ratio, tire hook, all equal 60' 330' 660' . You get the car working great and those numbers will be where they should be. The ET will be a result of those. MPH is HP and weight. jet up the carb, till the mph dropped off them go back 2 sizes for that day...

But only got 3 passes the second time up some dummy hit the gaurdrail so the repair took almost all day.

Back in the day my 3680 lb BBC camaro ran 12.26@108 first time out, we started the day at a 12.75. so tuning and tire pressure and 13 passes later we found half a second. Next trip to the track, i had swapped cam and carb, and gears from 4.10 to 4.56 we ran 12.02 @112 .

Line up the dots and call it good. This is a stock build no need to advance an RV cam.

John had another duster, a blue one with a shark tooths grill he raced in MP class. Was this the same car?

Very cool build.

Well to start with if you have almost 500 cubic inches, i will say start with an 850 cfm carb and get it tuned. Unless this is a trans brake race car you need a power valve in the primary side. I would say start with 76 jet in front with a PV and an 88 jet in the secondary side. Go out make some...

Is this a full blown race car that your leaving at 4500 or higher on the transbrake? Then go bigger where low speed drivabillity and part throttle are not needed. If its a street strip car, then stay with the 750. This is why i dyno everything, there is no guessing as to what the motor wants vs...

The intake manifold is an extention of the cylinder head. And both are relative to cubic inch and application. Your not racing flow benches, i have seen those be out to lunch, like a dyno a flow bench can be a little happy. It is very interesting how port shape is so critical.

The best way to jet is at the track make passes and add jet till your mph drops off then go back to the best mph! Squirter size gives you your 60'! Add squirter till it blows black out the back then go down two sizes. That has worked for me in the past.