Hello, Name's Rennie, live in Burleson, TX. I have a real nice 70 Belvedere Wagon with the 225 /6.

As opposed to yanking the /6 out and just tossing in a 383 V-8 for the power, I want to keep the /6 as the engine but do something outside the norm, well outside the norm as seen thru the eyes of those with their Orange Magnum Big-Blocks.

There are many options. I've seen turbo'd, supercharged, EFI'd, side-draft'd, 4-bbl'd, 2-bbl'd and all the rest. I know that "there is no substitution for cubic inches", I also know that "Speed is Money, How Fast ya Wanna Go?".

With those last two thoughts in mind, I have a dilemma... 225 Cubic Inches has it's limitations in a B-Body Wagon. Yes, yes, I know you're finding that hard to believe but we have to face it now. And I don't have an endless supply of money as hard as that is for you to swallow too.

Having accepted these as facts, I have ONE CHANCE to do this right (of course until the next chance). I Really like the side-draft Webers but, OUCH, $1600 just for the set up is, while within reach, somewhat painful. I also like the Hyper-Pak 4-bbl intake that Clifford Performance offers., much less expensive, but still it's nice eye-candy.

I have also seen, but have no input on, the Dual Weber 36MM 2-bbl carbs on the Offy Intake. I see it new on eBay (#360123558908) for $650. It falls into an easier price range and has plenty of that "looky-looky" thing going for it but does anyone know or have experience with with this setup? And although I am very well versed mechanically, I have this lurking notion in the back of my mind that Webers might be a real bear to get/keep tuned. I have a picture in my faulty memory of multiple glass tubes, liquid and lot's of hoses connected to multiple carbs in a somewhat frightening adventure in "balancing" the carbs or something like that. We haven't even begun to discuss the cam, headers or exhaust tube diameter. This ain't the well know (to me) B-block Mopar or small block GM motor I'm dealing with here.

This vehicles purpose in life will be a daily/weekend driver with maybe some dragstrip use with the clubs. I'd like to be able to run on pump gas but also get a little (alot) more seat of the pants acceleration. Having expressed my unsubstantiated thoughts on the Webers and my desire to have something just plain different, I guess I really would like the best bang for the buck input from those with some experience. Okay, I'll come right out and say it; I'm looking for some help here, some direction.

I know I'll "ask 20 people and get 20 different answers" here but I need some food for thought.

Thanks in advance for tolerating me!!!

Rennie

Have you considered the Aussie Speed intake manifold with a Dutra Dual exhaust? You'll need to change the camshaft and do some head work to take full advantage though.

On a limited budget, just go with a stock Super Six setup.

Ken

Welcome! I don't want to dampen your spirits, but carbs and intakes are a function of how you've built the rest of the engine. You need to think carefully about the rest of package first.

What RPM range do you want to maximize, and what rear gears will you be running. I'm guessing that you'll want all the low end torque you can make to get that big sled moving.

Daily driver means gas $ must be a concern. Pick a cam, compression ratio and gears that won't make you run high RPMs getting to work every day.

As nice as the eye candy is, you will find that your CFM demands are probably much mess than you think!

Tell us more about your driving habits/needs, and some kindly folks will help you get the best bang for your buck.

-Mac

You can't dampen my spirits here, and as i stated, I've yet to discuss the cam exhaust etc.

Let me give you a little more input as this should be of help to both (all) of us. I want the car as a daily/weekend driver because I want just that. Keep it mostly stock interior/exterior. Pump gas, not because of cost, but more for availability. Don't see a 10.5:1 Compression any day soon...

The heads have been reworked, ie: new seats, valve job, hardened seats and a minor milling. I will double check with the shop tomorrow as far as the amount removed.

At the moment it has the stock D56 gears, 3.54:1 ratio. Nice for the streets but right lane on the highway only. (Thoughts or comments on an A903 OD trans, Is that correct, from the trucks?)

I have yet to do any research on cam choices, so I'll ask here... I won't be towing and I have a wife and a dog as my only family. I don't know this wagons weight at the moment, title says 3200 lbs.

I have given strong consideration to the Dutra Manifolds. Also, the Headers, as seen at Aussie Speed, have come into consideration also. Both have pros & cons for me to consider. I need info on pipe size to bumper, as to not lose all my low end torque. 2"? 2.25"? Engine will not see WOT often except on those impromptu acceleration competitions at the green lights.

I am, obviously, not gonna be having any major need for massive CFM's here. However I am asking you guys why I could or why I shouldn't use the Weber 2x2's or the Power-Pak setup on a street set up. Or would my best choice be the Super Six set-up. If so, That don't seem to exciting. Ads I said I want to make the /6 something for others to rethink about at the clubs meets.


Thanks again, Rennie
I hope this gives a better Idea of what I have in mind.

enjoy this thread

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What's that fuzzy blue thing being hurled this way?
::stick::
BOOSH!!!

i think you should do something like fopar, but use the pulsa jets. you would definitely be known at the car shows

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What's that fuzzy blue thing being hurled this way?
::stick::
BOOSH!!!

Biggest bang for the buck will definitely be in head work. Porting and larger valves are a must. Next step would be cam selection, but for a daily driver that will not see much strip duty...don't go too much beyond stock specs. As far as intake/carb, for a daily driver I highly recommend to avoid multiple carbs and would suggest you use an aftermarket 4bbl intake with either a small Holley 390cfm vacuum secondary, or a Holley 2bbl carb. If you are running an automatic tranny, might want to bump to a slightly higher stall speed (not too much for a daily driver). Exhaust is gonna be toss up. If you could find a set of the longer tube headers, that would help with low end torque. But for a daily driver, you might want the more durable Dutra Duals.

Good luck

Brian

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Flyin' Brian

74 Duster, 225, rear-mounted blow through turbo at 12psi boost, street/strip car
"Sixy Beast"

So if you wait about 3 months Ill sell you a bolt on Aussie Speed M90 based SuperCharger set up.
Frank

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Scrapple: Because a mind is a terrible thing to waste.
73 Duster - Race Car
66 Dart Wagon - DD
178" FED
82 D150
All Slant powered

Renko,

To answer your question about pipe an torque. I built my engine for more torque not high rpm power. You should run 2.25" pipe from the manifold back to the muffler and a 2" tail pipe from the muffler on back. That combination has given me the most torque. By the way 9.5 to 1 compression is a real nice wake up call to the SL6. It turns into a very responsive spunky motor.
It also runs fine on regular.

The Aussie Speed manifolds are really nice and would help to build even more low end torque,

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Aggressive Ted

http://cid-32f1e50ddb40a03c.photos.live ... %20Swinger


74 Swinger, 9.5 comp 254/.435 lift cam, 904, ram air, electric fans, 2.5" HP2 & FM70 ex, 1920 Holley#56jet, 2.76 8 3/4 Sure-Grip, 26" tires, 25+MPG

, slightly off topic, anyone heard from 68barracuda in regards to those south african manifolds?

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What's that fuzzy blue thing being hurled this way?
::stick::
BOOSH!!!

Hey Rennie, I'm a few miles north of you in Carrollton, and I can tell you my experience. Granted, we're talking about a '72 Dart, but the registration says it weighs 3250 lbs. Anyway, I went from a stock 1bbl and exhaust to a Super Six 2bbl and Dutra Duals in one fell swoop, and the difference was night and day. It's not gonna win many drag races with the 2.76 highway gears out back, but it was SO much nicer to drive, and I picked up a few MPG, too.

I've since done a "long rod" engine rebuild with the 198 rods and KB pistons and Erson 270 cam, which makes it even better, but I haven't done anything about that 2.76 rear yet. When I do, though, I expect it to be even MORE fun.

Best of luck, and lemme know if you need a hand! BTW, going to the Cowtown Mopar show in a few weeks?

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vm

I'd LOVE to. Send me some info!

"Cowtown Mopars 24th Annual Roundup and Car Corral"

"The clubs 24th annual car show is being held this year on April 25 at our sponsors dealership, Allen Samuals Dodge at Loop 820 and Hwy 26 in North Richland Hills, Texas. The show begins at high noon! There will be classes for every Mopar or Mopar powered vehicle. Food, door prizes and lots more so bring out the family and have some fun!"

http://www.cowtownmopars.com/

Weather-permitting, I plan on draging my kids out there, but I won't have a car to show. AGAIN. My Swinger is in pieces.

I prefer the Ft. Worth show to the Dallas show, though. Hope to see ya there!

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vm