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Well finally got to mess around with the car a little the other day. As suggested I started looking for vacuum leaks and I think I found the problem. Kinda wierd because I had just put all new vacuum lines in but the one from the brake booster and the back of the carb were bulged out and not...

will do, im not sure if i will get to it till next week though, going out of town for the holiday.

later trailbeast thanks for the help!

I have not done a compression check only because I had 22-25in in vacuum at idle (if memory serves) and have no burning oil, but it could be worth buying a comp tester and trying it. So, factory dizzys are bad news, I was told that you could run one without vacuum because the vacuum was added...

ok bear with me, so hook up the light and make sure at idle its 12-15 then give it throttle while watching the timing mark to see when it starts advancing and where it tops out? Is it common to have to re-curve a stock dizzy?

Maybe a slack timing chain? or off a tooth? It really has me baffled, no matter what adjustment I make it stays the same, ive tryed 3 carbs, two dizzys, all kinds of air/fuel adjustments, timing adjustments, the stumble is still there.

good thought, i did try that though, currently I dont even have the vacuum advance attached, i detached it and advanced the timing (as it is now) and it still does it. Before I did that though, I did try and back the timing off and advance it both with the original dizzy and a new one, same deal.

yes, the accelerator pump is squirting emeadiatly and steadily through the whole stroke. The car does have power brakes which are very touch in the morning lol. I have a large vacuum purt at the rear of the carb which i have a t-fitting going to the brakes and the pcv

Oh I thought maybe the ratio would bog it down lol, shooting in the dark lol. I thought maybe vacuum leak but I sprayed carb cleaner around the intake and carb and the rpms never ramped up. I could try it again though

Thats a good idea on the grounds, the stumble is there day or night, the lights were just an indication to me that the output from the alternator might be low and if so the voltage to the MSD would be low. I dont even know if low voltage from the MSD would cause the stumble but it was a though I...

Hi all, I have a 73 scamp with a 360 from a van, airgap intake, quickfuel carb, headman headers, msd 6al. I have had a stumble issue at low rpm. I had a quickfuell 600 and now a 750, messed with both, new dizzy, messed with timing (I have even taken the vacuum advance off and increased my total...

I have a whole center grille with lenses (i just converted the front end to 70-72 on mine) for a reasonable price, it will get it out of my garage lol

Youre right, any motor depends on the heads/cam, I gotta start researching small block heads lol

Just went threw your whole build, love it! you do some awesome work! I was debating on taking out my smallblock and going to a bick block but I think you have just inspired me to keep it!

wow, 1300, i figured expensive but that is rediculous for a carb!

yeah im guessing so, probably more than going efi lol

Anybody seen these new silverback carburetors? They're not for sale yet (19 more days), seem cool as long as they're not a fortune or end up being a glorified predator carb lol. http://www.silverbackcarbs.com/ They claim 20-50 hp + lbs of torque.

That does sound nasty! sorry it has been so long since I responded last, been working a lot and trying to move, ugh. I wouldnt mind keeping the 360 as I wouldnt have to replace my new headers, mounts, intake, etc. I see a lot of guys saying to go with the magnum, is there a benifit to that block...

Thats the real problem, finding one you trust before you waste a bunch of coin lol

You know anything about 440source? they seem to have good prices on stuff, but typically you get what you pay for....

Nice, I will check that out, my wife has a friend near idaho. Thats a good way to get her onboard lol

Oh duh i gotcha, displacement is 432 lol. I was thinking the 432 was a trans, like i was saying i had a 360/727

Thats sweet, essentially a 383 stroker. What displacement does that give you? With the added costs what are the benifits of that over a 440 (asside from cool factor), more clearance from reduced deck height?

Sounds like you and I have a similar though process. Whats a 432? What are your plans with the 383?

So far my experience has been that all things horsepower related are spendy lol. I think I would like to shoot for around the 500hp range, seems like that would be easier/cheaper with a big block. With my 460 ford its a stock bottom end, some higher compression heads, cam, and your just about...

Awesome, I will look that up, it says its from the mid 90s, if im lucky ill still have the issues with the article in my collection in the garage lol. It may be worth building the 440 and buying all the parts while I drive it with the 360. I think its a 75 ish 440, are those ok to build or...

Part of my problem is this is my first mopar lol, if you ask me about a big block ford or just about any ford i probably know it lol. The 440 does have a 727 still married to it and my 360/727 is also out of a van so they seem like they are basically the same setup just one a small block and the...

Is it worth the money swapping to a big block? I would imagine for a similar price I could stroke the smallblock....anybody with a preferance of one engine over the other and why?

Im not sure what was in the van, the motor is already pulled and the van is gone. I do have power brakes so I assume you are talking about the booster not clearing. Can I just pull the booster and go to manual brakes to create the clearance (the brakes are really touchy anyway). What kind of...

I have a 73 scamp with a 360/727 that I suspect has been rebuilt but i think the cam was installed retarded. I am debating pulling the motor (fix oil pan leak) and swap the cam (ill end up needing heads too) vs buying a 440/727 out of a van and doing a big block swap. I love the looks and torque...