PRHeads's latest activity
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PRHeads replied to the thread Bought a Holley Street Demon Carburetor.What I do in that situation is place the carb on a block of wood, and rap the float adjuster screw with a brass hammer. Sometimes it can... -
PRHeads replied to the thread Trying to "find" my timing marks.It’s easier to verify TDC with two people. One to turn the engine with a breaker bar, the other to look in the spark plug hole with a...
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PRHeads replied to the thread 440 runs perfect for 5 seconds, then starts missing. Every time. Help..Here’s what I’d try to help determine if it’s a fuel control issue…… Have a flash light handy and remove the air filter assy. Start...
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PRHeads replied to the thread Went to the track Friday. What should I try next?.I believe Wallace has a calculator to correct runs to a “standard” day. You could run each combo with the DA thru the calculator and...
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PRHeads replied to the thread Went to the track Friday. What should I try next?.From your description, some of the performance difference was weather related…….so I “rounded down”. Either way, to this point at...
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PRHeads replied to the thread Went to the track Friday. What should I try next?.It would certainly appear the single plane set up was worth a couple tenths and 3+ mph. At your weight, that’s about 35-40hp worth of...
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Measure the size of the actual opening on that, if it didn't leave with the motor.. If it is around 1 1/8", the EMP-Robertshaw high...
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PRHeads replied to the thread Mopar M1 intake manifold.Basically, if you’re running std port heads that use “normal” std port manifolds, then an easy way to look at MP intakes is……. If it has...
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PRHeads replied to the thread Mopar M1 intake manifold.Get a pic. And an fyi…… The numbers cast into the manifold are not the part number……… those are the casting numbers, and will not...
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PRHeads replied to the thread 440 valve failure.I’d be pretty surprised if the root cause of the failure was that the valve just broke, “for no reason”. I believe with disassembly and...
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PRHeads replied to the thread 383 Mopar Purple Cam.My .02- If the engine will retain the stock carb, intake, exhaust manifolds, and particularly if it has PB, I’d be using a cam that’s...
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PRHeads replied to the thread Trick Flow 240 vs Stealth heads.I’m sure as the potential HP/CI went up, the difference in power between those two heads would increase.
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PRHeads replied to the thread 440 valve failure.That’s ugly!!
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PRHeads replied to the thread Best oil for a roller cam engine.If you’re going to try and buy performance oil locally, you will probably have the easiest time finding Valvoline VR1. I’d use 20w50 in...
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PRHeads replied to the thread 383 pickup tube.That pan uses a specific pick up, that is not the same one as the 402 pan uses, although it is similar. That pan is deeper than the 402 pan.
