Re: Original hemi dart information
 

Daryl,

That looks like my Daughter's College Education Fund............

Did you rob a Canadian Bank...........:).....or hit the Lottery....

Re: Original hemi dart information
 

Nope, & nope. Just a Canadian redneck blue collar mechanic------ Alot dedicated & maybe some possesed.

liteweight

Re: Original hemi dart information
 

Here's a photo of the 2 Canadian based LO Darts that were taken in Farmington a few weeks back. Thanx to Don Moats for forwarding the picture.

Liteweight

http://i1115.photobucket.com/albums/...ps3ac5e8ef.jpg

Re: Original hemi dart information
 

Daryl: Are the steering wheels on the left or the right side in those Canadian cars??? ha ha ha!!!

Re: Original hemi dart information
 

Craig
It has been awhile since you've been north of the 49th parallel isn't it?? he,he,he

Next chapter for my build is the carbs.

these cars originally were supplied with two 770 CFM vacuum secondary carbs, which for the most part, are good units out of the box, but, there is room for improvement. I'm not an out of the box kind of person, so I got together with a good friend of mine who has a flow bench & over 40 years of experience in modifing Holleys.
Now, I'm sure some people might get bent out of shape with me modifing original 68 Super Stock Hemi carbs,so, let me say these are reproductions. The 1968 originals are freshly restored, & safely packed away in boxes under my bench. I did screw the original 1968 tags onto these tho.

Visually a person really needs to know their Holleys to see the changes that were made to these carbs. That was the whole intent.

http://i1115.photobucket.com/albums/...ps21b6cc72.jpg

They have been flow balanced & each flow 897cfm now. The original straight boosters have been replaced with "dog leg" style of boosters. This places the booster into the main stream of the fast air in the middle of the venturies rather than above, which means they recieve a much better signal there. The shooters have been replaced with tube style for the same reason. All the pressed in air bleeds have been replaced with screw in to enable better tuning capabilities.

http://i1115.photobucket.com/albums/...ps74a6d02e.jpg
http://i1115.photobucket.com/albums/...psed57530d.jpg


On the original style of vacuum secondary carbs, including these, the secondary jetting is a replacable plate, rather than changing the screw in style of jets. A Real PITA when tuning. So, I installed metering blocks with screw in jets. All the metering blocks have been drilled & tapped with replaceable bleeds in them also. You will also notice idle mixture screws have been installed on the secondaries. Now there's 8 idle mixture screws. these work great for fine tuning. An 1/8 of a turn makes a huge difference on each one. This things throttle response is astounding. It's instant, even from idle under load. I'm sure it rivals that of a modern fuel injected engine.
These carbs would be illegal in class style of Super Stock racing, but there's other things on this car that are the same way.
Is it excesive? Yes it is, but makes for a helluva street driven hot rod

liteweight

http://i1115.photobucket.com/albums/...psa57c491a.jpg

Re: Original hemi dart information
 

Daryl: As a chevy guy, are the original 68 carbs 4160 style with the metering block? With all the years of tweeking on these carbs, the racers and Mopar John Baumann found a way to make them work pretty darn good!!!

Your car and set up really looks in your photos and better in person. I hope to set the motor in my new project in the next week or two and I will send you some photos. There is still a windage issue that is being worked out and the builder figures he has a handle on the issue. That big 4 3/4" stroke causes problems that you do not find in smaller strokes, windage and drain back are big concerns to deal with.

I thought that I should give you a little bit of a hard time on the photo of the two Canadian darts.

Re: Original hemi dart information
 

Daryl,
There have been so many pictures, I do NOT remember if this one has been posted yet. You know the car?

http://board.moparts.org/ubbthreads/...Number=6436453

Re: Original hemi dart information
 

I do remember this picture being posted somewhere, but I don't remember the logistics of this car.

liteweight

Re: Original hemi dart information
 

Thanx for the good words Craig.
They are the 4160 style but, no, they don't have metering blocks with thread in replacable jets in the secondary sides originally

So how many cubes are you building this monster to?? Are you installing a vacuum pump on the motor to help control the windage?

liteweight

Re: Original hemi dart information
 

Daryl: It is an Donovan 10.2" deck Donovan aluminum 620" EFI pump gas motor. We did not put a vacuum pump on it originally, the builder is changing the screen baffle in the pan, adding drainage and pressure equalizing lines from the ends of the heads to the pan and a pan scraper. The vacuum pump will come if all the other things do not fix the issue. He has it much better than when it was first on the dyno. If I had to do it again, I would have dry sumped it