Re: 80’s or early 90’s MP “recipe” 440 build article
[Re: lewtot184]
#2520759
07/11/18 10:08 PM
07/11/18 10:08 PM
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Joined: Feb 2005
Posts: 4,318 Prospect, PA
BSB67
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This from Ma Mopar. The math suggests that they think it is 35 hp difference between a 4 bbl and 6 bbl.
Last edited by BSB67; 07/11/18 10:10 PM.
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Re: 80’s or early 90’s MP “recipe” 440 build article
[Re: fast68plymouth]
#2520761
07/11/18 10:17 PM
07/11/18 10:17 PM
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Joined: Aug 2011
Posts: 2,872 Pattison Texas
CSK
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Thanks Russ for the info, I got to thinking about the one we dynoed , it had headers on it,that would explain the little bit more HP
1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5
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Re: 80’s or early 90’s MP “recipe” 440 build article
[Re: CSK]
#2520789
07/11/18 11:29 PM
07/11/18 11:29 PM
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Joined: Aug 2003
Posts: 43,292 Bend,OR USA
Cab_Burge
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I've seen 8 to 12 HP changing from a low deck six pack intake with stock type 440 vacuum carbs.(720 HP to a team G 4500 low deck intake with a Holley #9375 non HP 1050 CFM carb. that made 708 to 710 HP on my old 518 C.I. pump gas motor
Last edited by Cab_Burge; 07/11/18 11:30 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: 80’s or early 90’s MP “recipe” 440 build article
[Re: BSB67]
#2520840
07/12/18 01:00 AM
07/12/18 01:00 AM
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Joined: Jun 2006
Posts: 5,166 CT
GTX MATT
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but that trap speed started gaining with more gear. I've seen tests with lower trap speeds, but honestly there doesn't seem to be that many. 98 MPH for a 440 4 barrel with 3.23s seems to be about par for the course.
Everything else being equal, gear won't really change trap speed much. Maybe 0.5 mph, and it could go down. I'd agree it won't change MUCH but maybe 1-2 MPH in some cases, and you can definitely have too much and slow down. This article kind of shows that off pretty well, not huge gains from the gears, and 4.30s slowed the 440 car down (trap speed) until they put some taller tires on. http://wildaboutcarsonline.com/members/A...num_440_1-7.pdf
Last edited by GTX MATT; 07/12/18 01:28 AM.
Now I need to pin those needles, got to feel that heat Hear my motor screamin while I'm tearin up the street
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Re: 80’s or early 90’s MP “recipe” 440 build article
[Re: BSB67]
#2520850
07/12/18 01:27 AM
07/12/18 01:27 AM
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Joined: Jun 2006
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GTX MATT
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5) Test weights were high due to extra test equipment and sometimes a second person. Range from 3780 to 4550. Only one was below 4000lb.
FWIW.
This seemed to be very common to have multiple passengers and equipment, does anyone know why the heck they did that?
Now I need to pin those needles, got to feel that heat Hear my motor screamin while I'm tearin up the street
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Re: 80’s or early 90’s MP “recipe” 440 build article
[Re: GTX MATT]
#2520902
07/12/18 07:15 AM
07/12/18 07:15 AM
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Joined: Feb 2005
Posts: 4,318 Prospect, PA
BSB67
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but that trap speed started gaining with more gear. I've seen tests with lower trap speeds, but honestly there doesn't seem to be that many. 98 MPH for a 440 4 barrel with 3.23s seems to be about par for the course.
Everything else being equal, gear won't really change trap speed much. Maybe 0.5 mph, and it could go down. I'd agree it won't change MUCH but maybe 1-2 MPH in some cases, and you can definitely have too much and slow down. This article kind of shows that off pretty well, not huge gains from the gears, and 4.30s slowed the 440 car down (trap speed) until they put some taller tires on. http://wildaboutcarsonline.com/members/A...num_440_1-7.pdf Look at pass 2 to pass 3, both cars. There is your comparison. Both cars picked up in the last pass. Money says a better cool down and better air is the reason. Maybe better driving too. I've done this many times. Watched others do it. Raced against the same guys all the time that tried it (this is very interesting). The outcome was always the same. If there is any difference, it is likely because of some other factor.
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Re: 80’s or early 90’s MP “recipe” 440 build article
[Re: fast68plymouth]
#2520951
07/12/18 11:10 AM
07/12/18 11:10 AM
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Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
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When I first put my 440 together to go into my satellite back in 1981, when I really had no clue as to what I was doing, it was a fairly stock build. Block just got a skim cut, bored .040 over(no plate), I used the correct 2.030 c/h pistons, heads looked okay(to me at the time), so they just got cleaned really well, valves wire wheeled and lapped in, and new springs and retainers to go with the Crower Monarch 280H cam I bought for it. 280/280, 224/224-110, .460/.460 Original Torker intake and a Holley 650DP, exhaust manifolds hooked to a new stock replacement Maremont dual exhaust for a 383, because the 440 H pipe wasn’t available. 12” converter, 3.23’s, G50-15 Kelly Springfield SuperCharger tires....... best ET was a 14.04. I think it broke into the 99 mark, but I don’t remember the speed for sure....... other than I know it never broke 100mph. Shows about 265hp on the morose chart.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: 80’s or early 90’s MP “recipe” 440 build article
[Re: BradH]
#2521036
07/12/18 02:17 PM
07/12/18 02:17 PM
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Joined: Dec 2013
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Re MPH vs gearing, the difference between 3.55 and 4.10 when my car was in the 12s was negligible. It ran 12.4 at 112.7 with 3.55s and 12.2 at 112.7 with 4.10s. The MPH only changed when the tire & gear combination resulted in the engine over-reving, and then it dropped off by 2 to 3 MPH. I fell into the "need deep gears!" trap at an early age. I blame it on a Chrysler Power article that had a chart showing progressively faster e.t.'s with deeper gears. Went from 3.23's to 4.56's behind a solid cammed SB in my Cuda. Car ran identical e.t. and mph. ...but with a lot more rpm on the street! Promptly pulled the 4.56's and sold them a month later..
'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: 80’s or early 90’s MP “recipe” 440 build article
[Re: fast68plymouth]
#2521080
07/12/18 03:55 PM
07/12/18 03:55 PM
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Joined: Jan 2003
Posts: 13,385 Marion, South Carolina [><]
an8sec70cuda
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My dad has always told me that his '69 road runner (bone stock, but driven hard) w/ a 383/727 and 3.23 gears would run right beside every 440-4V car he ever raced. Two in particular were '70 cudas, both U code 440-4 cars. Stock vs. stock, I don't doubt it. Start throwing parts at em though and cubes are king.
Makes sense when you consider both used the same cylinder head, cam, and similar induction. The 440 will just turn less rpm.
Good friend of mine had a drag car w/ a 440 w/ a decent solid FT cam, M1 intake, dominator, and stock 346 heads. He wanted to upgrade to a 493" stroker, but didn't have the money for heads so we put together a good 493" bottom end, but reused the cam, heads, intake, etc. It ran 7.30s in the 1/8 at 440". It went 7.20s at 493". Converter was a lil tight w/ the 440, pretty sure the extra stroke just made better use of the tight converter.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: 80’s or early 90’s MP “recipe” 440 build article
[Re: fast68plymouth]
#2521114
07/12/18 05:22 PM
07/12/18 05:22 PM
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lewtot184
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Re: 80’s or early 90’s MP “recipe” 440 build article
[Re: an8sec70cuda]
#2521122
07/12/18 05:52 PM
07/12/18 05:52 PM
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Joined: Mar 2009
Posts: 889 Oh
parksr5
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Good friend of mine had a drag car w/ a 440 w/ a decent solid FT cam, M1 intake, dominator, and stock 346 heads. He wanted to upgrade to a 493" stroker, but didn't have the money for heads so we put together a good 493" bottom end, but reused the cam, heads, intake, etc. It ran 7.30s in the 1/8 at 440". It went 7.20s at 493". Converter was a lil tight w/ the 440, pretty sure the extra stroke just made better use of the tight converter. [/quote]
Had a good friend do the same thing with a 351. Stroked it to 393", got a new custom ground cam from Bullet but, kept everything else the same including the factory iron heads that he'd worked over himself years before.
I was at the track with him during it's maiden voyage with the new motor. He did not tell anyone until later that day what he'd done over the Winter. As far as we knew, he just freshened the motor. He was all over checking floats, timing and etc. He was frantic and not happy. Car went from 7.50 to 7.38 in the 1/8.
Everyone had the same thought, he simply reached the limit of what the heads could do. A set of AFR 205 aluminum heads later and the thing picked up almost a whole second in the 1/4.
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Re: 80’s or early 90’s MP “recipe” 440 build article
[Re: Iowan]
#2865937
12/29/20 12:39 AM
12/29/20 12:39 AM
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Joined: Jan 2003
Posts: 2,863 middle Tennessee
mopower440
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I have a 440 that was first built in the 80s, the short block was blueprinted and has 9.5 cr, the heads are 452 s with 2.14 /1.81 and have been pocket ported along with port matched. About five years ago I found all the parts for this motor cleaned them up and reassembled it and added a NOS 557 mech mopar cam I had and an old M1 and 850 Holley. There's nothing trick or hight dollar just trw pistons mopar rockers and MSD ign.
520 hp @ 5900 545 tq @ 4700 Which TRW's did you use?
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