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1970 dodge challenger 440 sixpack #1386805
02/13/13 07:40 AM
02/13/13 07:40 AM
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bbchalle70 Offline OP
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what should I do that I could get my car to run as well as possible with these parts?
70 block .060 over. piston 1mm below deck level.
metal cover seals. pressure 10.3.
516 covers.
440 sixpack standard size valves.
a little less than two-inch sheet metal manifolds.
original 3xholley in vacuum
original current separator, the centrifugal advance off.
original stall speed
3.55 sure grip.
when you weigh 40 mail in the bottom of the gas, so it knocks a moment and then starts to run.
Bensin 98 oct pump gas.
camshaft 292 hemi purple saft
already works fairly well, not be interrupted, etc.
thanks, ben

Last edited by bbchalle70; 02/13/13 09:40 AM.
Re: 1970 dodge challenger 440 sixpack [Re: bbchalle70] #1386806
02/13/13 10:28 AM
02/13/13 10:28 AM
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck Offline
Not enough dumb comments...yet
Mr.Yuck  Offline
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Posts: 24,562
Brookeville, Md
Have you messed w/ the carbs yet? You might want to up the jets to 66 or 68, try a 4.5PV, and go down on the outboard springs. You might also want to try 31 squirters and up the accel pump shot. But I'm guessing your main issues are the converter and gear. Those 509 cams desire 3000+ stall and 3.91 gears.
I'd try to add some timing, 36* full in at 2200rpm, then re-adjust your carb for best vacuum.


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Re: 1970 dodge challenger 440 sixpack [Re: Mr.Yuck] #1386807
02/13/13 02:48 PM
02/13/13 02:48 PM
Joined: Jan 2004
Posts: 4,565
Motor City
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6PKRTSE Offline
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Motor City
I agree, more convertor & gear will help. I have a Comp 292 in my street Charger with a 10" 3500 PTC convertor & 4:10 gears. This package seems to work well. The best thing that helped my carbs was white outboard springs. The lightest you can get. They are not included in the vacuum secondary kits along with the other color springs though.


1963 Belvedere 440 Max Wedge Tribute
1970 Charger R/T S.E. 440 Six Pack
1970 Challenger R/T, 528 Hemi
1970 Charger 500 S.E. 440 4 BBL
1970 Plymouth Road Runner 383
1974 Chrysler New Yorker 440
1996 2500 RAM 488 V-10 4X4
2004 3500 Dually Cummins 4x4
2012 Challenger R/T Classic.
Re: 1970 dodge challenger 440 sixpack [Re: 6PKRTSE] #1386808
02/13/13 06:01 PM
02/13/13 06:01 PM
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bbchalle70 Offline OP
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11,39 ooh,,nice

Last edited by bbchalle70; 02/13/13 06:04 PM.
Re: 1970 dodge challenger 440 sixpack [Re: bbchalle70] #1386809
02/13/13 06:44 PM
02/13/13 06:44 PM
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bbchalle70 Offline OP
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ok 3.91 or 4.11 gear. it is an easy way to get better.
stall-speed, and also an easy way.
I like the original Holley vacuums.
1/4 miles would be nice to get 13 second side.

Re: 1970 dodge challenger 440 sixpack [Re: bbchalle70] #1386810
02/14/13 06:36 PM
02/14/13 06:36 PM
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bbchalle70 Offline OP
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how fast can I get 1/4 miles with this lineup?
what about 3000 stall and 3.91 to 4.11?
thank again,,best forun ever

Re: 1970 dodge challenger 440 sixpack [Re: bbchalle70] #1386811
02/14/13 06:46 PM
02/14/13 06:46 PM
Joined: Jan 2003
Posts: 9,872
Weddington, N.C.
Streetwize Offline
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A good quality medium stall ~3200 rpm converter (like a 10" Turbo action) would work wonders, I'd do that first and then the gears only if you're still not happy....my feeling is that may be all you need. A good street-strip shift improver kit can also help noticably with vacuum secondary carbs.

Which 292 Purple shaft is it? is it the 108 or 112 lobe seperation? for a heavy car with mid 3 gears I would put the 108 in at 105 and the 112 in at 107 Intake centerline.

Lighter diaphagm springs (spring quick change kits are cheap and vey handy for tuning) should help and make sure you have adequate fuel pump pressure and volume.

Please define 'weigh 40 mail' for us ....I love your phrases for the 'heads' and 'headers' and especially:

Current Interrupter = Distributor!!

Last edited by Streetwize; 02/14/13 06:50 PM.

WIZE

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Re: 1970 dodge challenger 440 sixpack [Re: Streetwize] #1386812
02/15/13 07:56 AM
02/15/13 07:56 AM
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bbchalle70 Offline OP
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I meant that when the 40-50 mile pace, and the gas to the bottom so rattles 1 second and then goes accelerate properly.
I do not know your language perfectly,,,,, yet
I'm just a Finnish who wants to be his own life kowalski

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Re: 1970 dodge challenger 440 sixpack [Re: bbchalle70] #1386813
02/15/13 09:21 AM
02/15/13 09:21 AM
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck Offline
Not enough dumb comments...yet
Mr.Yuck  Offline
Not enough dumb comments...yet

Joined: Jan 2003
Posts: 24,562
Brookeville, Md
I agree w/ Wize the 3.55's shopuld be ok but you really need more convert. If you are rolling at 40-50 and step into it there should be no lag. I'd probaby up the primary 2, check your PV, try a lighter spring in the outboards and possibly change the pump shot. What sort of timing are you running?
as for times... a 440-6 with decent parts, 509 cam, 3200 stall and 4.10's in a big car can run 11.70's
So far 11.389 but I just got my 2" headers. (old ones are 1 3/4") I'm going to get those on, try some drag shocks and see if I can't pull and 11.teen this year.

Re: 1970 dodge challenger 440 sixpack [Re: Mr.Yuck] #1386814
02/15/13 02:17 PM
02/15/13 02:17 PM
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bbchalle70 Offline OP
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thanks again







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