Holleys for a hemi?

Thanks, John, the factor is square root of two.

R.

I'm game to try anything- this would be the simplest/cheapest way for now. I have my daughter this weekend- so can't take em apart til tomorrow. Thanks for the advice so far!

I have two 750 Holleys on a Stage V intake on my HEMI. I have power, good tunability and decent mileage (12-13 mpg on 100 mile cruise). However, I would probably have gone with the stock setup if I had to do it over again. I read all the talk about "feeding" a large HEMI, (540 ci), and I found the intake and carbs at a "deal" at the Nats. Here is what I DIDN'T consider: I could have bought a COMPLETE package with all NEW parts for less money at the same show from Mancini. Instead of bolting on the supplied fuel line from them, I spent DAYS fabricating lines that "mirror imaged" stock. Hollys feed on the driver side vs. Carter on the pass side. this is not as easy as it sounds, you have to clear throttle linkage etc. vs. having things split up on both sides of the engine. I would have been able to use the SUPPLIED progressive throttle linkage vs. opening both accelerator pumps and primaries every time I touch the gas. I would have been able to use the stock kickdown linkage that I already had vs. buy cable set up from Bouchelon (although it is a great set up and I love how easy it is to adjust throttle pressure). Then I would have been able to use the SUPPLIED air cleaner vs. ordering one from Canada, dealing with the hastles of importing it and then paying $300.00 to have it chromed (it came polished? aluminum). If you have the stock set up now, it would be EXPENSIVE to change to Hollys and I am not shure that you would gain anything.

Holleys will fit on the Mopar marine intake or the Stage 5, but I don't think you'll have much luck getting them to fit your stock intake, especially if you have a factory ram air setup. My bro had problems with the 1407 750's on his 517, so he switched to Eddy Thunder 650 AVS carbs & that made a huge difference in driveabiity, throttle responce & mileage, too (who cares about MPG with a Hemi).
As was also posted, go get an Eddy calibration kit ($65 from Summit)&
switch out your metering rods. Holley's on a Stage 5 intake are cool, but I think two 650's will make you happy. Tim Banning (FHO), told me he's getting over 800 hp on their big stroker Hemis with 650 Thunders.

I went out while she was still sleeping, and looked at the some. Rods are all 7147"s, and the # on the base ion the front are both 2540 9756S. Now- I did say was not a carb guy- so don't laugh too much. Where's the jets?

Don't forget about the air doors.

Thanks Mick- have the motor out for a refresh, and a few upgrades. The carbs are on my bench- so I'll check which jets are in them as long as they're laying there. I'm not sure which end it's rich on- I have a 5 speed with 3.54 Dana. and tall 295/50/18's- so 70 is just under 2,000 RPM. I like to get on it- but not flog the crap out of it. Little idling as I live on a highway, work in a small town. The carbs come on at the same time- but I could adjust the rear to hit later with the linkage. It doesn't burn your eyes- but I can taste the exhaust some after a while.

Check all of the plugs and keep track of what holes they came out of. Does the intake manifold have 4 holes in the carb plenum or open? I think those are 750's and they wouldn't open on a stock manifold.

Sheldon