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Critique this combo please.... #181744
01/02/09 02:38 PM
01/02/09 02:38 PM
Joined: Jan 2003
Posts: 642
South Dakota
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dakotahotrodder Offline OP
mopar
dakotahotrodder  Offline OP
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South Dakota
What do you think about this combo for my bracket car? 440 block, bored .030 w/ BCR aluminum main caps & zero decked, Muscle Motors stroker kit with 4.250 crank, flat top pistons. I would re-use my existing 78 cc cnc ported e-heads that flow 307 @ .600, existing Indy SR rockers, existing M1 intake and Bigs 950 carb. I have a Lunati solid roller cam with .648 lift 270/276 duration @ .050, 108 lsa. Compression ratio should be in the 12.3:1 range. The heads and intake have the std. intake window, not MW. What kind of power do you think this would make, and how more with EZ heads and a dominator? Thanks, Wade

Re: Critique this combo please.... [Re: dakotahotrodder] #181745
01/02/09 04:22 PM
01/02/09 04:22 PM
Joined: Dec 2006
Posts: 4,647
aotearoa
rebel Offline
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aotearoa
personally i think you need bigger holes in the heads to match that cam. it'll run like an asthmatic.

Re: Critique this combo please.... [Re: rebel] #181746
01/02/09 04:26 PM
01/02/09 04:26 PM
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Posts: 11,701
Portage,michigan
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B3422W5 Offline
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Quote:

personally i think you need bigger holes in the heads to match that cam. it'll run like an asthmatic.




I dont know..i have w5 heads in 422 inches that probably arent any bigger/better than those heads, and an even bigger cam 273-280 and my car runs fine.

That combo he has should make 600-620 ponies easy, and get pretty much anything in the 10's and a light car in the 9's.

Sounds like a torky mild rpm combo.

Last edited by B3422W5; 01/02/09 04:28 PM.

69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8

Re: Critique this combo please.... [Re: B3422W5] #181747
01/02/09 05:49 PM
01/02/09 05:49 PM
Joined: Jan 2003
Posts: 6,266
Renton Washington
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Triple Threat Offline
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Renton Washington
Quote:

Quote:

personally i think you need bigger holes in the heads to match that cam. it'll run like an asthmatic.




I dont know..i have w5 heads in 422 inches that probably arent any bigger/better than those heads, and an even bigger cam 273-280 and my car runs fine.

That combo he has should make 600-620 ponies easy, and get pretty much anything in the 10's and a light car in the 9's.





Don, Your car has 80 less cubes that this motor will though.

The car will run out of steam up top with that little head on a big motor. Its will work but you would see benefits from going to the larger head as you already know.

If it were me I would run it with the heads you already have now. If your not happy with how it runs then you can step up to something else.


-Dustin
67 Dart, 9 second, 392" G3 Hemi
68 Barracuda 340 F/SA
Re: Critique this combo please.... [Re: Triple Threat] #181748
01/02/09 09:26 PM
01/02/09 09:26 PM
Joined: Jan 2003
Posts: 642
South Dakota
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dakotahotrodder Offline OP
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South Dakota
I know it would be better with Indy heads and a dominator, but I'm trying to get some real world input as to what something like this should make for power. Again, if I can swing this it must be with some of the parts that I have, and like mentioned, I can add the heads later.

Re: Critique this combo please.... [Re: dakotahotrodder] #181749
01/03/09 01:12 AM
01/03/09 01:12 AM
Joined: Sep 2004
Posts: 1,499
San Antonio,TX
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440W8 Duster Offline
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440W8 Duster  Offline
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San Antonio,TX
Wade the motor won't make any more power than you have now but might make more TQ.The heads are the limiting factor.Try to find some -1 heads later and you'll see that thing come to life.

4919503-106-0671_IMG.JPG (32 downloads)
Last edited by 440W8; 01/03/09 01:14 AM.

70 Duster W8 motor.
1.29 60ft 5.79 1/8 at 120 mph
glide with 1.80 gear
@3170 lbs.
Re: Critique this combo please.... [Re: 440W8 Duster] #181750
01/03/09 01:20 AM
01/03/09 01:20 AM
Joined: Nov 2003
Posts: 6,293
Rock Springs
Bob_Coomer Offline
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Rock Springs

JMO
Sounds good it will still be a torqee motor though. I wouldnt over gear it, or put too much converter in it. I will say even with those ported heads it probably wont want too RPM very high.


[color:"red"]65 Hemi Belvedere coming soon [/color]
[color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]
Re: Critique this combo please.... [Re: dakotahotrodder] #181751
01/03/09 02:12 AM
01/03/09 02:12 AM
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
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Cab_Burge Offline
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Bend,OR USA
Quote:

What do you think about this combo for my bracket car? 440 block, bored .030 w/ BCR aluminum main caps & zero decked, Muscle Motors stroker kit with 4.250 crank, flat top pistons. I would re-use my existing 78 cc cnc ported e-heads that flow 307 @ .600, existing Indy SR rockers, existing M1 intake and Bigs 950 carb. I have a Lunati solid roller cam with .648 lift 270/276 duration @ .050, 108 lsa. Compression ratio should be in the 12.3:1 range. The heads and intake have the std. intake window, not MW. What kind of power do you think this would make, and how more with EZ heads and a dominator? Thanks, Wade


I have a low deck motor that was very simialr to yours as far as the C.I and heads, my cam is smaller, 260@.050 intake and 266@.050 exh solid roller, and my compression was less, 9.25 to 1. My intake and carbs are Eddy low deck six pak intake and stock Holley vacume six pak carbs, the motor made peak HP at 5600 rpm and peak torque at 4500 rpm with that combination, in the car the motor pulls real hard to 7500 rpm I am scared to find out where the motor quits pulling hard so I shift it between 7000 to 7300 RPM As far as how much power the motor will make with the M1 and 950 carb. I would guesss around 650 to 700 hp depending on the tune up and weather, very similar torque. As far as how much gain with the EZ heads and bigger carb it depends on which intake and port size?


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Critique this combo please.... [Re: Cab_Burge] #181752
01/03/09 10:13 AM
01/03/09 10:13 AM
Joined: Nov 2004
Posts: 3,619
Norwich CT USA
Defbob Offline
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Defbob  Offline
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Joined: Nov 2004
Posts: 3,619
Norwich CT USA
The motor in the convertible makes 585 horsepower.
.055 over
4.25" stroker, 511ci
10.85:1
Modern CNC E-heads, 320cfm @ 600
TM7 with 830DP
.604", 260@.050, 110 lobe sep, Solid tappet
isky iron rockers, old wide base ones

Re: Critique this combo please.... [Re: Defbob] #181753
01/03/09 10:25 AM
01/03/09 10:25 AM
Joined: Nov 2004
Posts: 3,619
Norwich CT USA
Defbob Offline
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Defbob  Offline
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Norwich CT USA
my estimate is based off or rwhp and calculated to find crank hp.

475rwhp from the mph and weight







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