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Hello, I have a stock '68 fuel tank that is giving off fuel vapors when parked. This only happens after I refill the tank. I have a mechanical fuel pump with a return style regulator after the carbs get fed. This return line goes back to the tank. The other vent line on the fuel sender...

Hello, Running a six pack setup, I am a little uncertain on how to compute/estimate my PVCR size. I am familiar with the formula that adds the area of the primary jet to the area of the PVCR to arrive at the suggested area of the secondary jet. The fly in the ointment here is that I am not...

Hello all, I've been slowly refining the tune on my six pack setup on a 493 stroker big block. My question has to do with secondary metering plates. I came across a pair of secondary metering plates that accept screw-in jets, but they don't fit properly. They tend to interfere with the...

Hello all, I've been working to eliminate a heat soak issue with my six pack setup, recently installed a set of 1/4" phenolic spacers between the carbs and the intake. I am using the 0.030" paper gaskets on both sides of the spacers. So I get the whole thing put together and the idle is too...

Hello, I am presently running a Carter M6903 mechanical pump and a deadhead style regulator on a 550 inch six pack engine. This system is giving me some issues with idle characteristics once the engine heat soaks. I will be installing carb spacers but also looking to run a return line back to...

Hello all, I posted this a few days ago in the A12 forum, but thought I would add it here as well. I have a six pack setup on a 493 stroker, backed by a 727. Power brakes. Cam is very similar to Mopar 528, with wider lobe separation. Fuel and ignition are pretty well setup at this point, as...

Hello all, I would appreciate some thoughts on where to mount a Holley fuel pressure regulator. I am running a Carter mechanical pump, followed by a vapor separator (with return line), and then a fuel filter feeding a six pack setup. I have been having some problems with inconsistent fuel...

Hello, I have a six pack setup on a 493 stroker and a question about fuel distribution at idle. I've adjusted all three carbs for best idle vacuum. I have also used the "finger over the idle air bleed" test on both end carbs to confirm my mixture settings are optimum. My question has to do...

Hello all, Got a couple of questions about idle mixture adjustment on a mild 383. Cam is 214/224 degrees @ 0.050", with a 650 CFM vacuum secondary Holley. Street use with a Torqueflite. Low compression at 8.5:1. I am running electronic ignition with the following settings: 18 degrees...

Hello all, I have a Holley dual inlet carb mounted on my 383. I quickly found that routing the dual fuel line assembly pointing toward the front of the engine aims it right at the distributor. Common problem, I'm sure. I reversed the direction of the fuel line assembly so it points rearward...

Hello all, I have been rebuilding a 4160 style Holley 650 that I got for a song - not surprised it has some issues but I'd like to get it running right anyway. This is a stock carb for a 1968 440. I'd like to use it on my resurrected 383 for a while, so I don't want anything fancy or pricey...