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Yeah, the small carb was faster over the quarter than the Dom....That is because the engine has to get to 4000 rpm before it can get to 6000 rpm where the engine might use the extra flow of the Dom...

The 8:1 CR, 120 psi cranking pressure, is why it wants a lot of timing at idle. To get the optimum idle timing [ let us ay 25* ], you have a couple of choices: - shorten the curve in the dist to about 11-13*. That will give 36-38* at WOT. The low comp ratio will want more timing. This much...

And Mopar Joe also tested a 1050 Dom v a 750 4150 carb on his 440. Dom made 6 hp more.....but was down 6 ft/lbs at 4000 rpm.......

...pump etc. The fuel in the carb gets used up very quickly at WOT in 1st gear; in the higher gears, the fuel gets used more slowly, has time to 'catch up'. Is the comp ratio low? If the engine wants 25* of idle timing, then you should give it 25*. 25* is not a lot for a modified engine. See below.

No, not a problem with my procedure at all. The spark plug terminal is assembled by MSD, not the end user. And that was high resistance in one of the leads in the last set I assembled.

The dramatic drop off at 6k suggests valvetrain [ control ] or ign. Ign is 'external', so a lot easier to check out. Is the ign box getting the reqd voltage? If you have another dist, I would try that. Are you running a rev limiter? If so, I would disconnect it; & I would try another ECU &...

Bob, I have used many sets of the MSD 'Universal cut to size' 8.5mm wire sets. Yes, should definitely check the resistance. Every lead. These universal sets come with the spark plug end already terminated. On the last set I used, after terminating the dist cap end, it measured high...

Some of the lifters have corrosion. I would have all of them re-faced, then good to go.....

When you buy those fancy alum pulley kits that advertise 'more hp' because they have reduced the size of driven pulleys, they do not tell you that the overheating you are going to get is included in the price!! Use a 160-180 t/stat, not a restrictor. Use a shroud & plug any gaps so that ALL the...

I suspect you would have blue smoke from the exhaust if excessive oil was getting into the combustion chamber.

Hysteric, Post #66....comes from NGK. You obviously know little about spark generation. Production cars used carbon string high tension leads, often with a resistance as high as 30,000 ohms. Then they had the series resistance of the rotor tip gap ANNNNNNNNNNNNNNND the series...

Finally, Hysteric, you did something right...... lean mixtures need more timing, which is why when cam overlap increases, the mixture is diluted [ leaned out ] at lower rpms by exh dilution...& requires more timing. Many years ago, Champion had a spark plug series called the U series that had a...

Here is the plug wire test. #6 was a non-res plug, specified by the wire manufacturer

Here is what NGK really said about resistor plugs......

Hysteric, Are you really that ignorant? Engines using a distributor have a rotor that has an air gap that the spark has to jump before it gets to the spark plugs. That air gap has a resistance in the millions of ohms, several orders of magnitude greater than a 5k resistor inside the plug. In...

I have used contact cement [ glue ] many times. I must have been lucky.....

RRR, I will tell you why you do IDLE TIMING first..... You bolt on your carb, factory 12* of initial timing. You find the mixture screws are not adjusting the mixture; you are able to screw them all the way in...& engine still runs. You remove the carb & find too much transfer slot is exposed...

On resistor spark plugs. Circle Track tested about 10-12 heli-wound plug wires that had different ohms per foot. The test was to see if resistance affected the hp. There was a small HP difference between the best & the worst, & the winner did NOT have the lowest resistance. That is likely due to...

Turk, Should have added. The links I quoted above with happy endings were from a variety of people.

...dark night.... My GTO & hundreds of thousands of other Pontiacs idled on the showroom floor with a tiny 197/212 @ 050 cam....& 10.7:1 CR....with 26*. The car makers need to be conservative because they do not know the end use of the car. The Edel tuning manual states to use plenty of init...

Use contact cement

The transfer slot. It is mentioned on p.2 of the Edel carb book.

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What follows is just a FEW examples that got it right....

A few people are saying fix the carb first. They are 100% wrong. Timing at idle [ & more if IT BIS needed ] IS NOT A BANDAID. What it shows is that folks do not understand what is going on in the cylinders...at idle!!! At idle, the air entering the engine is throttled [ almost closed t/blades...