I finally found a Wieand low deck tunnel ram for my 383. It is built up pretty good in an old school way. 11.5-1 TRWs, .557 lift x 296 duration solid DC cam, ported OS valve 906s. Right now I have a Torker and a single Holley 750DP.

I am going to use two Holley 750 double pumpers. What would you gentlemen suggest for squirters, pump cams, jets, PVs or not, all that stuff.. The usage is street and strip with more street. The car is a 64 Dodge 440 with a 4 speed and 4.56 gears.

Thanks!

Tim

Make sure and get the same, identicle LIST number Holley carbs(IE 4779-1 or 4779 no dash or 4779-4 and so on ), verify all you can verify on both carbs. as far as idle air bleeds, high speed bleeds, start with the stock Holley jetting, power valves and squirters also to start with Tune from there, do the basic set up as far as the throttle settings on both carbs to match as far as the throttle blades are open and so on Make sure and check the throttle linkage travel and wide open throttle checks

A pair of 750's on a tunnel ram is a little overkill on a 383 don't you think? Throttle response would be better I would think with something smaller ?

At 6800 rpm, a 383 pulls 753 cfm of air at 100 percent efficiency. Running two 750 Dps, they will work well about there, but probably not very good below there. I would call Holley tech and ask what they recommend. There are other options, like vacuum secondary carbs that might be better suited to your deal, especially if you don't have a 5,000 or higher stall converter.

I've been on the lookout for the offy 5186 low rise dual quad intake for my mild 383 4 speed RR. From the research I have seen most guys seem happier when they went down to the 500cfm Eddy's or twin 450cfm holleys .

two 660 holleys will work well when matched and tuned. At least it did for me

I have the 750s. Carbs are expensive!

A common practice on t-rams to controll/maintain leaner idle/cruise afr`s(hope u have a wideband)is to lower the ifr sizes down a bit and as stated less jet and bleed tweeks for wfo............

On our low deck based 452 with a Weiand tunnel ram we have 2 Holley Ultra HP 600's. Apparently they were a pain to get dialed in but eventually Dan got there. The carbs were my choice precisely because of all the built in tuning options plus the idle air bypasss. I do not know what jets and air correctors were in the carbs originally so can not compare to what is in it now. It is close to square jetted, 70hf in primaries, 71 in secondaries with power valves in front and rear metering blocks. I think they are 6.5 but they were hard to read. Not sure on the air correctors. Linkage is set up progressive, carbs sideways mounted.

Engine is not in the car yet but hopefully this weekend at least get it set in place so it can move under its own power (hurricane season and all that).

I just recently purchased DAvid Vizard's book "How to supertune and modify holley carburetors" and it is a very informative read. The proofreading and depth is not up to his "Tuning BL's A-series engine" but still worth the read. He does a very good job of explaining how all the circuits work and which direction to go. Might want to consider looking for a copy. I used Amazon as I can guarantee it is not in the one bookstore on island.

Mr. Vizard highly recommends a wideband. Eventually we will get one as we have three cars we could tune with it; the RR, Michelle's 67 Landy, and our 63 MG Midget (assuming we bring the MG Midget down from Bab).