Looking for info on three deuce set ups on SBC 350/350. Any advantages besides the increadible WOW factor? Disadvantages? The car is a regular driver. Input on performace, fuel economy, rpm range would be appreciated. The kits sold by Summit/Jegs show a power range to 5500 rpm. Can that be raised a little with carb spacers or ? Thanks Tom
In 1955, there were probably advantages for the three carb setup compared to the four barrels available at the time. In 2010, I would be very surprised if you can gain any performance or economy on a good single four barrel setup. So, I suppose the answer is, "wow" factor.
Thanks Could I expect similar performance to a four barrel set up? I love the look of of the 3X2 and I want something differant. I don't mind losing a few hp at the top of range but I don't want drivablibity problems or significant fuel economy loss.
mine ran grate had it in late 60'6 on a 327 with the 30 30 duntof cam 56 chevy nomad 4 sp 4:11 olds rear end got 20+mpg ran 13.20 at fremont drag strip
My view on "tripower"/multicarb setups, 6-71 blowers etc. is ****ogous to: Why does any woman, who is not an entertainer, feel the need to wear platform shoes? i mean, they're not really nessesary are they? Because they like it and it is interesting. Same thing with tripower----if you like it go for it.
I did mine for looks.......have 45K miles on it cross country 4 or 5 times, ran fine. If you like the looks ...do it !
I like mine, but make sure you set them up right or they can be a big pain. Probably not a lot of increase in power over the 4 barrel but definitely gets the WOW factor. Red
SKY...the trip deuce setups are expensive new. and a stock cam may not help it anyway. i would suggest a edelbrock airgap 4 barrel manifold and 600 cfm. carb. they look great and realy work...POP.
They look fantastic and if you like the WOW factor all the better. That's what I am doing with my 283.
It is achievable to get 3x2 to perform about the same as a modern 4bbl, it is also more expensive and time consuming. It does look cooler though... Open spacers may give you a little more rpm at the top but depends on cam, carb cfm as stated above.
Thanks John I may have to take you up on the "lend a hand" offer. I can get beer from the fridge as well as anyone can! Tom
Mine also, on a 312. But it was the same era and the fellas I knew that were running 2x4s or even big single fours were doing just as well. Performance wise if I need wow factor today I run two fours. Same wow factor and I've been able to squeeze good performance from the setup. Of course for ease of tuneing I could do as well or better probably with a big dominator.
Thanks for the input. I looks like performance wise I may lose a little on the top end with trips over my 750 SD. I'm ok with a little loss. I just can't get them out of my head. I will be watching for a set up. Opinions on best carbs? Stromberg? Rochester?
No one's talked abought fuel mileage. mine is great. didnt do it for mileage. I like the looks, and the fact i can make it work. bored getting ready to try man a fre. their goes the mileage jim
I built my tri-power out of about 20 old carbs--hard to find good carbs in Ca now! They can be a pain to get set up right,but nothing looks as cool as multiple carbs--just pay attention to jetting and linkage,and they work fine.
This is one I would like to see for myself. Having built and tuned several combinations almost like this the best recorded performance was very high 13's (mostly low/mid range 14's). The 30/30 Duntov cam is the biggest killer of a combination of this sort when it comes to milage. The fact it was claimed to be done with a heavy station wagon leaves it more suspect. Frank
I love the looks of 3 carbs. Mine are Rochester 2gc's on a 383 small block. Just fired it the other day, sounds good, should perform good. I still need to paint the scoops and some small stuff. Mick
the car was well known in the bay area got 13 to 16 around town the truck in sig pic i still have with 6X2 i get 13 hwy with the 10% ethanol we have to run now just had to go up 1 jet size in center carb's to get mix so not to serge now it will most likly going to the dumps
Here's my 2 cents. If your talking performance, 4bbl carbs have been hard to beat since they were invented. (***uming it's a properly matched, built and tuned one and not a Holly 850 on a SBC). But here's something else to consider, even though it's getting better than it was in the past there are a lot of tri-power set-ups that never performed as well as they should have because people overlooked some fundamental factors when putting (or slapping) them together. Most notably that the secondary (outside) carbs need to seal when they are not in operation just like the secondaries in a 4bbl do. You can't just remove the chokes and plug the idle circuits and bolt 'em on. These days there are several sources to buy good sets that are done right and will run at least as well as Corvette, GTO, Mopar factory tri-powers did. (which was pretty damn good) If you learn a little about this and get a good set built you will be very happy with it. And it'll look cool too. If you'd like me to recommend a source, p.m. me.
I went dual 2 barrels from an Edelbrock 4 barrel and love the look and performance. Mild/stock 350 runs like a champ with a pair of 94's on a custom slingshot.
running 3- 2gs..dont care about any mileage, dont care if no one likes em, dont care if the car wont do 12's. dont care if it takes a while to get it right. I think they look cool. And I like em, that i care about
When properly set up, they're a good compromise between looks, mileage, and performance. The factory tripower (with mechanical linkage) on my '64 GTO has worked flawlessly for years.
We have talked with quite a few customers who are really happy with their fuel mileage after installing one of our Induction Madness set-ups whether it be the Six Shooter or the Triple Deuce. Most of the time you are riding around on the center carb so it is like driving with a 2bbl . Also as you mentioned in your orig post the wow factor is pretty col as well when you roll into a cruise in or car show and pop the hood.
My 3x2 2g gets great mileage when driven properly. When floored at 2000 rpm causes severe tire smoke and uncontrolled giggles.
Still researching this. Any thoughts on a dual plane verse a single plane manifold? They look like a fairly low rise manifold in the pics I've seen. Wouldn't a single plane have less turbulence and work just as well/better? Thanks
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