Re: Quarter Mile time for 1971 440+6 Roadrunner
[Re: markshemiworld]
#2484499
04/18/18 08:43 AM
04/18/18 08:43 AM
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Joined: Oct 2015
Posts: 570 UK
rb446
mopar
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mopar
Joined: Oct 2015
Posts: 570
UK
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Pure stock 440+6 challenger making some runs....I'm sure there's some tricks done to make them run that good on polyglass tyres. https://www.youtube.com/watch?v=gPbZLu8BgxM
1969 'Cuda 446ci, best 9.96@133.9 in 1990 1971 340 'Cuda, best 11.01@122.8 in 1987
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Re: Quarter Mile time for 1971 440+6 Roadrunner
[Re: rb446]
#2484501
04/18/18 08:56 AM
04/18/18 08:56 AM
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Joined: Dec 2013
Posts: 4,704 Wichita
GY3
master
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master
Joined: Dec 2013
Posts: 4,704
Wichita
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13.50-13.80 @ 102-104mph.
May be able to squeeze a 12.99 with slicks.
Keep the 3.23's if it is a street car!
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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Re: Quarter Mile time for 1971 440+6 Roadrunner
[Re: dvw]
#2484583
04/18/18 12:22 PM
04/18/18 12:22 PM
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Joined: Feb 2005
Posts: 20,203 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,203
PA.
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Dizuster had 65 Belvedere. 3.91, stock 11 3/4" converter, Eddy heads, 484 purple shaft, stock 440 short block, maybe 8.0-1. With 255/60 BFG T/A's it would hook from 1500 rpm everytime. 12.90-13.0 depending on weather. Many different people raced it. All could cut .00x lights. Car was dead on. Best car in real street trim I've ever raced. Doug You can give two different people the very same parts and one guy can make it fly like a raped ape and one guy can't make enough power to spin the tires. Its been proven time and time again.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: Quarter Mile time for 1971 440+6 Roadrunner
[Re: markshemiworld]
#2484653
04/18/18 03:20 PM
04/18/18 03:20 PM
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Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,514
So. Burlington, Vt.
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Back when they were new......
Popular Hot Roddjng tested a 71 440-6 Charger Super Bee with 4.10's/auto, it went 14.2@99.
Car Craft tested a 71 440-6 RR, also 4.10's/auto.....they got it to go 13.7@101.
I'd say those are the bench marks to shoot for.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Quarter Mile time for 1971 440+6 Roadrunner
[Re: pittsburghracer]
#2484709
04/18/18 05:37 PM
04/18/18 05:37 PM
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Joined: Apr 2012
Posts: 18,880 -
RSNOMO
Moparts Torchbearer
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Moparts Torchbearer
Joined: Apr 2012
Posts: 18,880
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Dizuster had 65 Belvedere. 3.91, stock 11 3/4" converter, Eddy heads, 484 purple shaft, stock 440 short block, maybe 8.0-1. With 255/60 BFG T/A's it would hook from 1500 rpm everytime. 12.90-13.0 depending on weather. Many different people raced it. All could cut .00x lights. Car was dead on. Best car in real street trim I've ever raced. Doug You can give two different people the very same parts and one guy can make it fly like a raped ape and one guy can't make enough power to spin the tires. Its been proven time and time again. Thank-You... (Research what Tim Richards did with a lowly '71 GTX...
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Re: Quarter Mile time for 1971 440+6 Roadrunner
[Re: markshemiworld]
#2484730
04/18/18 06:09 PM
04/18/18 06:09 PM
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Joined: Jan 2003
Posts: 31,082 Oregon
AndyF
I Win
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I Win
Joined: Jan 2003
Posts: 31,082
Oregon
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I’m seeking some opinions on what y’all think a 1971 Roadrunner with these options would run in a quarter mile:
440 six pack Bored 30 over 10.5 to 1 compression Aluminum H Beam Rods Forged Crank Forged Pistons Stock 906 heads with 3 angle valve job Comp Cams Extreme Energy XE262H Stock Holley Carbs with larger jets Factory Electronic Ignition Stock Manifolds 2.5” exhaust with Flowmaster 40 Series TCI Streetfighter 727 with 2400 stall converter 8 3/4 with 4.10 rear gears 275/65/15 BF Goodrich Radial T/A’s on the back with Rallye Wheels
Car has power steering and power brakes and a Sanden A/C compressor. Car also has stock airgrabber hood with K&N air filter. Thanks ahead of time for your answers! Why would a mild engine like that have aluminum rods?? A car like that with a typical driver will probably run 14's at the track. I see cars like that all the time at Mopar shows run 14's or 15's. Once in awhile you'll see a car that the owner is willing to beat on harder and they'll run 12's or 13's. When I was in high school my best friend had a '70 RoadRunner with a 440+6. It was a four speed, Dana 60 car with air grabber. I don't know how fast it was in the quarter mile but we had a lot of fun ripping around town in that. It sounded killer and it pulled hard and it got a lot of attention.
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Re: Quarter Mile time for 1971 440+6 Roadrunner
[Re: fast68plymouth]
#2484771
04/18/18 07:54 PM
04/18/18 07:54 PM
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Joined: Jan 2003
Posts: 15,439 Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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Back when they were new......
Popular Hot Roddjng tested a 71 440-6 Charger Super Bee with 4.10's/auto, it went 14.2@99.
Car Craft tested a 71 440-6 RR, also 4.10's/auto.....they got it to go 13.7@101.
I'd say those are the bench marks to shoot for. Not an apples-to-apples comparison by any means, but... When I first bought my Challenger with the 440-6 on a stock '70 long block & MP 272/.455" cam, it was slippin' & slidin' to 13.7s at 101 on hard Goodyear 235/60R15s. I put a set of M&H 275/60-15 bias-plies on spare 8" rims and it dropped to 13.2s at 103 simply due to better traction off the line. The car had 3.55s and an OEM 2200-stall converter at the time. Too much gear and too much stall with marginal tires will just make it worse.
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Re: Quarter Mile time for 1971 440+6 Roadrunner
[Re: BradH]
#2484850
04/18/18 10:29 PM
04/18/18 10:29 PM
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Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,514
So. Burlington, Vt.
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Back when they were new......
Popular Hot Roddjng tested a 71 440-6 Charger Super Bee with 4.10's/auto, it went 14.2@99.
Car Craft tested a 71 440-6 RR, also 4.10's/auto.....they got it to go 13.7@101.
I'd say those are the bench marks to shoot for. Not an apples-to-apples comparison by any means, but... When I first bought my Challenger with the 440-6 on a stock '70 long block & MP 272/.455" cam, it was slippin' & slidin' to 13.7s at 101 on hard Goodyear 235/60R15s. I put a set of M&H 275/60-15 bias-plies on spare 8" rims and it dropped to 13.2s at 103 simply due to better traction off the line. The car had 3.55s and an OEM 2200-stall converter at the time. Too much gear and too much stall with marginal tires will just make it worse. Headers or not?
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Quarter Mile time for 1971 440+6 Roadrunner
[Re: markshemiworld]
#2485060
04/19/18 12:47 PM
04/19/18 12:47 PM
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Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,514
So. Burlington, Vt.
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When I first got my heap running in 1982, I had a pretty mild 440 in it. -.040 over 440 with flat tops .055 down the hole -Crower "Monarch" 280H cam(224/224@.050, .460/.460, 110lsa) -Stock 906's with upgraded springs -ex manifolds with crimp bent exhaust pipes for a 383(no H pipe) -Original Torker with a 650dp Holley -12" converter -3.23's -g50-15 bias ply tires
At Sacramento raceway it would run low-14's at mid/hi-90's. Best ever was like a 14.06....... And it never broke 100mph in that configuration.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Quarter Mile time for 1971 440+6 Roadrunner
[Re: markshemiworld]
#2485093
04/19/18 01:49 PM
04/19/18 01:49 PM
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Joined: Aug 2009
Posts: 1,319 Ohio
jlatessa
pro stock
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pro stock
Joined: Aug 2009
Posts: 1,319
Ohio
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I bought an A-12 in the spring of 69, one of the first around. My buddy was a salesman at a Northeast Oh dealership.
Two other friends had Dodge A-12s, mine was a white RR with a black vinyl top, all 727s.
In pure stock we all ran pretty much the same, this with some re jetting, more timing and a pinion snubber (I know, I know).
At a local track, 13.6s, 106 with the Polyglas.
On mine, I did a multi-angle valve job, prestolite Ign. module, Hooker fenderwell exit headers, 50 cc pump, electric pump, windage tray w/6 qt. pan, more jetting and timing, 42* total on a recurved dual point, short point set for you guys as old as I am who remember that stuff, open headers.
Was able to run a best of 12.80s at 114, still Polyglas.
The trick to traction was easy roll-out and a slow mash.
Wish I didn't drive that wet cold January night in 1971 after a few drinks, my stupidness cost me week in the hospital and a totalled A-12.
Oh well....Joe
Edit.. forgot the SSH 25 Racer Brown hydraulic in the mods Edit #2 160* thermostat, blocked heat crossover, my memory sucks!! More, cool can, high vol. oil pump kit, 3/8" fuel line all the way to carbs J10 plugs, this is embaressing!!
Last edited by jlatessa; 04/19/18 02:07 PM.
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Re: Quarter Mile time for 1971 440+6 Roadrunner
[Re: markshemiworld]
#2485853
04/20/18 11:12 PM
04/20/18 11:12 PM
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Joined: Feb 2005
Posts: 4,321 Prospect, PA
BSB67
master
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master
Joined: Feb 2005
Posts: 4,321
Prospect, PA
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It will come down to several key factors. How good are the heads really, is it truly 10.5:1 (pump gas won't work if it is), car weight, quality of your tune, driving skill, and DA on track day. Best- low 13 @ 106, worst 15.0 @ 100.
The cam is pretty small.
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