6-71 & Mechanical Fan, and other questions.

[74Dusted]

I remember seeing a picture of somebody's a-body that had a Roots Blower, Chrysler Radiator & a Mechanical fan. Please chime in, I'd like to know what you did to fit everything in like that (it was a tight fit, if i remember correctly)

I'm getting ready to put my wallet out of its misery and will be installing a Dyers Roots 6-71 setup on my '74 Duster later this month, and I'd like to do any possible core support mods/radiator relocation mods before I paint the car.

Currently, the car is completely assembled (waiting to be torn down) so now would be the time for me to get any measurements for modifications. (factory 318 A/C car, swapped to a 340 with A/C)

I'll be swapping the RV2 compressor for a York Compressor, since the blower & RV2 will both want to occupy the same space

Also, I have a Vacuum Reservoir Tank (about 2 gallons) that I salvaged from a 70's Volvo, can I use just a regular Brake Booster check valve to keep the tank from bleeding off stored vacuum (to run the A/C and Cruise Control)

 

[65TerrorCuda]

Without moving the radiator location, a 2" gilmer belt and factory mech fan will fit if you measure carefully, it's close. Another gent on here used a 3" belt and a much thinner flex fan.
I doubt you'll need a vacuum can, I get more vacuum with the blower.

 

[74Dusted]

Much appreciated, that looks about the same depth/thickness as the Stainless fan I'm running.

I've got a 4-core C-body big block radiator in my '74 Duster, and have about 3/4" I could use to move the radiator (gap between the radiator & core support). If I move it, I might be able to keep my Shroud if I use a 2" belt.

3" would require me to remove the shroud and cut away part of the core support to relocate the radiator even further. I think, anyway. I won't really know until the 6-71 is sitting on top of the 340 and I've got a belt hanging from it. which is why I figured I'd ask. wouldn't want to order the 3" setup, only to find it wouldn't fit.

 

[mopardude318]

any updates?

 

[74Dusted]

any updates?

Yeah. After months of life getting in the way, I'm finally getting somewhere.

Got most of the 340 together, and then set the intake/blower, valve covers, fan, etc on the engine temporarily so I could start mocking up the brackets to mount the accessories.

Ended up going with a Sanden SD709 A/C Compressor instead of the York compressor, didn't have enough space for the York. No new pics, but I have the brackets for the A/C Compressor finished and the rest of the accessories reuse the stock brackets.

Now I just have to order the engine paint (nobody stocks Hemi Orange, since it's not a chevy color rotest: ) and pull the accessories, valve covers, blower/intake, etc back off and finish prepping the block/heads/timing cover for paint. (also has new brass freeze plugs now). Then its time for the final assembly and I can move on to finishing up the rest of the car.

If all goes well (it never does...) I hope to have the car together and on the road again by spring.

 

[rgreule]

why is it you arnt going with a electric fan

 

[MiradaMegaCab]

74Dusted, great progress!!

Do you have a side view pic?

 

[74Dusted]

why is it you arnt going with a electric fan

Because I don't trust an electric fan as the primary means of cooling my 340. Not a lack of airflow or anything, but the worry that it could fail (and I've had it happen, with new fans, on more than one occasion).

I do have an Auxiliary "Pushing" Electric Fan mounted in front of the Condenser on the car, in case things get iffy. But I prefer to keep a Mechanical Fan for the primary fan on this car. It's one of those things where once you've been bitten by something, you're leery of it for a long time.

74Dusted, great progress!!

Do you have a side view pic?

Not at the moment, I did have some, but they're gone. Long story short, I formatted the wrong hard drive in my computer and lost a bunch of stuff that wasn't backed up. ops: Lesson Learned, always make sure you've got the right drive selected, and the files are backed up too before you format.

 

[mopardude318]

thank for the update. keep us posted.. you have me interested..lol

 

[74Dusted]

thank for the update. keep us posted.. you have me interested..lol

No problem.

The motor is going in my '74 Duster. It's in the process of becoming a '71 340 Clone. Building it to be a nasty street car.

These pics are old, this was when I first got the blower, I just had to set it on the 340 that was in the car to see how everything fit up.

The ole girl used to look better, but I used her as a daily driver and never bothered to wash or wax it in the 6+ years I drove it. This time around it'll be still serving as a Summer Daily Driver, but I intend to keep it washed & waxed. And she'll be sporting a new paint job and 340 stripes this time. Rallye Red again, the original color was Frost Mint Green and it was Plum Crazy Purple when I bought it.

I want to say these pics were from 2007 or so? I think

And this is what she looked like when I last drove her, in 2011

 

[mopardude318]

awesome! blower looks rad! old school lookin car!

 

[74Dusted]

awesome! blower looks rad! old school lookin car!

Old School was the plan from the beginning. My whole '74 project (even before I towed it home) was influenced by my Dad's '73 340 Duster, the Gold one. Which he ended up giving to me anyway. (Fun car to drive by the way ) I have fond memories of riding in that car as a kid (before he parked it for almost 2 decades rayer: ) The '73 was the car that started my love for A-Bodies.

The '74 eventually turned into its own car/project once I got a taste of the modifying bug Drove it around as a stripeless 340 powered car for years and embarrassed a lot of people. I can't say it was a Sleeper, with a nasty 340, 2.5" Duals, Glasspacks & 340 Tips/Resonators it definitely made its presence known

 

[cjh]

Here is some pics of an Aussie Hardtop Valiant 360 with twin superchargers.

 

[74Dusted]

Here is some pics of an Aussie Hardtop Valiant 360 with twin superchargers.

That's what I did to my cousin's RX7 as well, Remote Mount Eatons.

I appreciate the brainstorming we've been doing, thanks for the help so far.