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Convertor might be a tad loose for the cam but I Run a similar combo in my roadrunner with a 4.10 and a 9.5” vert with shorter 28” tall tires. Works very well. Big single plane with a big carb. I’d put a 4500 series M1 on it with a 1050 dominator. Use a more modern intake if hood clearance...

They don’t increase air flow so they’re not going to make more power. On a Ill tuned carb they may help throttle response. Nothing pump shooter and pump cams cannot fix. Just a bandaid IMO. I build and drive 1050 cfm dominators on the street and don’t need em..

That’s what I use on my HEMI (alum version). Gotta keep the moroso tach drive, it’s been in the car longer than I’ve been alive..

I actually use it in my race car. But I’m sure someone will have something to say about it.. lol Street/strip car as well, ignore those PCV valves on either car. Those have no business on 10sec cars

Weld a bung, the tail pipe clamps are not super accurate.

You could say it really went off cliff for me. Once I started drilling and tapping I couldn’t stop. I’ve learned to manipulate these things where they run like fuel injection.. maybe better.. lol

I get your passion. Once I put a AFR meter in my car it went off the deep end. My passion lies more with Holley type carbs and dominators. I’ve built and tuned numerous carbs on my 512 roadrunner. It’s been a hell of a tool! With everything I shoot for drivability as well as WOT performance...

Got my Hemi going. I have a pair of L88 vacuum 850’s on it. List 3418. It was stupid fat with the factory calibration. Right around 12’0-11.9 at idle. Idle screws were un-responsive. Went into the 10’s with some throttle and was just loading up. Made my first whack at it, dropped the IFR from...

That’s a solid flat tappet. My buddy ran the same cam in his 472 (Barton built). His was around 12.1, ran super strong. Ran 10.40’s through tail pipes in a full weight 68 B body. He drove the piss out of that engine on the street for years.

First question is what are you planning to do with it? Cruise it around, street strip, run the piss out of it?

I’ve talked with Ray a few times. Great guy! He’s all over on these intakes though. He told me a ported single plane and ported xram would make the same HP but the xram would make more midrange torque. He also told me his xram and the mp xram would make the same power. A friend of mine had his...

Cross ram was acting up on the dyno. It had a pretty good vacuum leak. I ran it with an unported Parton single plane and an 1150. That’s the only full pull I made on it due to time. Pretty sure it’s got power left on the table. I think the cross ram is going to rip if I can get it figured out.

548 ci

Almost ready to fire mine in the car. Will be tuning the 850’s to start.

Love the arguments :lol:

You need to add a 10-32 brass set screws. You use that to shrink the passage to the transfer slot. Very common modification. 4150’s I usually start around .078 and work from there. You will need a numbered drill set as well. Harbor freight has them reasonably. See pic below, inner hole. That...

How far out are the idle screws? If they’re more than a turn out I’d leave the IFR alone and add transfer slot restriction. What’s the IAB size?

What the air fuel at off idle cruise? Did you try jetting the primary’s down to see if it helps? A lot depends on where the main circuit takes over. If you need to lean the cruise prior to the boosters being on the IFR,IAB play into that. But, if the idle is good and you have good adjustment on...

I look at my vacuum at cruise. Say 45 mph. Lay into the gas like you’re going to pass someone. Where the vacuum drops to I usually set the PV number close to that. It’s an enrichment circuit, and I like to use it. With 2.5 PV the only time they provide extra fuel would be at WOT. I promise you...

Generally no. The PV only contributes extra fuel when the boosters are active and vacuum low. Therefore it has no affect on idle, even when the PV is open. Usually if the boosters are active you have high vacuum unless you’re accelerating. I have ran into situations where it may need to be...