Lock jaw, I'm running the Stage V intake on my Hemi with a pair of the 770 VS holley crosram carbs. The combo is 542 inches. 4.560 bore, 4.15 stroke. 13.1 compression. stage V replacement heads 2.25 intake that flow 398 cfm at .750 lift. cam is a solid roller with 730 lift minus lash and 270 @50 on both.
This is in a stock suspension 69 GTX. Caltrack bars, shocks and springs. Cars weighs 3525lbs with driver. Power glide, dana with 4.56 gears. Converter is set up for nitrous but I'm not set up to run nitrous yet.
Motor made 639 RWH and has gone 1.31 60ft, 5.99 @113,41 in the 1/8 and 9.496 at 139.
While I have yet to get the right converter, I'm also very curious about either switching to the Barton single plane with say a 1250 dominator or the Indy tunnel ram with my two 770 carbs. Any one who has experience with the Indy TR or the Barton single 4 please chime in.

Read they were 100+ hp down on power and I`m sure the hot air off of the track into the ducting isn`t helping either. I am in this century homey street driving a 9-second n/a car, building quality carbs having a great time pushing my limits so whatever man............to each his own and you can have your efi if it does what you need it to do......

Dom... I'm not your homey... if you dont want
do go with it.. fine

Damn, I thought you were my homey..........VERY heart broken........

Nobody has ever said EFI made more power to my knowledge. To make a certain power, you have to burn a certain amount of fuel. Whether you spray(EFI) or leak(carbs) it in there makes little difference. BUT, EFI is infinitely more tunable and there is nothing in the fuel curve you can't fix. EFI sometimes makes more AVERAGE power, but seldom more peak.

I have converted several to EFI, that I had carbureted dyno sheets on. I put the same lb/hr of fuel through the motor at upper rpms and they made exactly the same power. The difference is usually in mid and low ranges, where they generally have to be run much leaner on EFI because the atomization is so much better.

If you don't like EFI, you don't like it and that's fine. But you will NEVER get as good of a fuel curve with carbs.

And the Pro-Stocks started 100hp down on PEAK. Some are now within 25 of last years peak, even with the rev limiter. Many have better average though, which is why they are not that much slower than last year, with a program they have been working on a few months vs YEARS. To me, they are actually pretty damned impressive to be where they are already

I LOVE EFI. Recently put it on my beater CJ-5 and the jetboat is next

Hi Mercman1, I have a very similar setup to you...69 GTX, 3550lbs less driver, 4:10 rear gears, Lenco ST1200 5spd (3.10 first gear), Tim Hyatt Clutch System, Caltacs, monoleafs, Sliders, and was running a 440 single carb, but now building my 604" Hemi.

New Hemi 604, 12.5cr, Custom Comp Mechanical Roller, 278/280 @.050 112* and .700 lift, Stage V Big Valve Heads, Stage V dual Quad Intake, Stefs Oil Pan, etc...

I have not decided on Carburation, however Ray Barton told me that if I run dual 800cfm AVS edelbrock carbs, I can run them progressive. I would have the carbs modded for 1000 cfm by Diamondback, or run 2x Quick fuel 950 - 1050 4150 Q-Carbs mounted sideways, non-progressive.

Car is strip/street, but still trying to decide what is best for carburation.

Mark

For what it's worth mine has been 9.11@149/3350lbs on 2 box stock Eddy 750s. 9.02@151 with 2 Pro-Systems 750 Holleys. Indy cross ram intake. The Eddys are not ideal for power, but run well and are very inexpensive.
Doug

Hi Doug, what size engine and a few specs would be helpful...

Thank you!

[quote=lockjaw-express]Hi Doug, what size engine and a few specs would be helpful...

Thank you! [/quote
572, MCH -1,285/292,112 LCA,.800 lift,14.8-1, Ultimate 9" 6000, 4.10, 10.5x31 M/T.
Doug

Hi Doug, wow, what an impressive engine...very nice :-))