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Opinions on my set up
#495877
10/13/09 12:41 AM
10/13/09 12:41 AM
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Joined: Jul 2004
Posts: 4,732
Watertown, WI
MikeyT
OP
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OP
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Joined: Jul 2004
Posts: 4,732
Watertown, WI
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Ok did a little drag racing about 2 weeks back! i was pretty happy!
I pulled 13.68 at 105, 1.9 60 foot time.
Here is my build up
1970 dodge Coronet 3900 with me in it
440 engine 10:1 compression (Estimate)
stock 440 aluminum heads
Comp Xe268h-10 Cam with stock valve train
770 street Avenger
Holley Street Dominator intake
1 3/4" shorty headman headers
727 transmission with 2500 PCT torque converter MRVB and 3:91 gears on my Yokohama 295 50 15 street tires.
like I said I was happy with my times, but could you please look at my build and tell me what I should consider changing to put me into the 12's?
Maybe this is it and i should accept it, but any pointers would be great.
Mike
1969 Dodge Dart Swinger
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Re: Opinions on my set up
[Re: MikeyT]
#495878
10/13/09 01:01 AM
10/13/09 01:01 AM
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Joined: Nov 2004
Posts: 2,825
Sk. Canada
RemCharger
master
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master
Joined: Nov 2004
Posts: 2,825
Sk. Canada
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You need bigger stuff. Cam/Carb/Headers, and the convertor is minimum. Are you sure its razor tuned as is? It sounds like its running to its potential. 
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Re: Opinions on my set up
[Re: RemCharger]
#495879
10/13/09 01:08 AM
10/13/09 01:08 AM
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Joined: Jul 2004
Posts: 4,732
Watertown, WI
MikeyT
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OP
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Joined: Jul 2004
Posts: 4,732
Watertown, WI
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Probably not. I'm learning as I go. I've got timing set at 34 degrees (pings at 36) and went up one jet size on the carb, but that is about it. I haven't done any other wild voodoo things to it yet.
I was afriad that the top end change might be in order. ( suggestions would be nice for each)
Would uncorking my headers and fattening up the carb do anything?
Ny the way I went with a streetwize build and it was very helpful to set this car up.
Mike
1969 Dodge Dart Swinger
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Re: Opinions on my set up
[Re: MikeyT]
#495880
10/13/09 01:11 AM
10/13/09 01:11 AM
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Joined: Jan 2003
Posts: 6,266
Renton Washington
Triple Threat
master
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master
Joined: Jan 2003
Posts: 6,266
Renton Washington
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Get the Car to 60 foot harder, you already make enough horsepower to run in the 12's.
My car runs 12.40-.50 at the same 105 MPH. But my car 60 foots in the high 1.6 range.
-Dustin
67 Dart, 9 second, 392" G3 Hemi
68 Barracuda 340 F/SA
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Re: Opinions on my set up
[Re: Triple Threat]
#495881
10/13/09 02:18 AM
10/13/09 02:18 AM
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Joined: Nov 2006
Posts: 1,460
oklahoma
forphorty
pro stock
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pro stock
Joined: Nov 2006
Posts: 1,460
oklahoma
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Quote:
Get the Car to 60 foot harder, you already make enough horsepower to run in the 12's.
My car runs 12.40-.50 at the same 105 MPH. But my car 60 foots in the high 1.6 range.
 My car only runs 107 mph but has gone 12.35 with a 1.69 60ft. You need a sticky tire first. Eliminate any wheelspin and then see where you are at. If the launch is still soft, you may need more converter, but your cam is pretty mild, ought to have pretty good low end. I don't know about those shorty headers, a full length set would probably perform better. opening the headers would probably pick up a couple mph if you only have a 2.5 in exhaust. I bet more cam and converter would make your car really fly. Sounds like it runs pretty good for such a mild combo. Get some tires first, then play with what you have for awhile.
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Re: Opinions on my set up
[Re: Triple Threat]
#495882
10/13/09 04:36 AM
10/13/09 04:36 AM
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Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
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I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
Get the Car to 60 foot harder, you already make enough horsepower to run in the 12's.
My car runs 12.40-.50 at the same 105 MPH. But my car 60 foots in the high 1.6 range.
your car is not 3900 pounds, so no he's not making enough hp to run 12s. he's making good hp for what he has and I agree he needs to work on the 60' which isn't bad for what he has either. more converter,better tire,maybe a gear change would probably help. also a better carb/intake may help. 
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Re: Opinions on my set up
[Re: Quicktree]
#495883
10/13/09 07:47 AM
10/13/09 07:47 AM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Quote:
your car is not 3900 pounds, so no he's not making enough hp to run 12s. he's making good hp for what he has and I agree he needs to work on the 60' which isn't bad for what he has either. more converter,better tire,maybe a gear change would probably help. also a better carb/intake may help.
That's wrong, Tony.........105 IS enough speed to go 12's at ANY weight...........ALL he needs is traction and a converter swap and I guarantee it'll run at least 12.50's..........and with a converter swap and sticky tires, I bet it'll pick up 2MPH....... 
I've had LOTS of 3,900 to 4,000LB cars run mid 12's in the 105MPH range even with 3.55 gears..........  
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Re: Opinions on my set up
[Re: MikeyT]
#495885
10/13/09 08:52 AM
10/13/09 08:52 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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To me for a street car I work from the back forward, in other words... I would put gear in it first, then a converter, then build the engine. With a gear you spend less time below the torque curve, converter keeps you in the torque longer yet... then the engine for more power.... but without hooking it up its ALL wasted
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Re: Opinions on my set up
[Re: MikeyT]
#495886
10/13/09 10:11 AM
10/13/09 10:11 AM
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Anonymous
Unregistered
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Anonymous
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That’s very similar to my combination.
Mine’s a 4000lb (with me in it) 69 road Runner, 10:1 .030 over 440, 3.91 gears, 2500 stall, and a manual VB. I run 12.7’s – 12-8’s @ 107 mph here in Boise 12.3’s – 12.4s at 110 mph at sea level.
The differences in our combo’s:
I run 11.5x28 Hooser QTP DOT’s (Like these guys said get that thing to 60 ft and the ET will come in line.)My 60"'s here in Boise are mid 1.8's
I run a stock 4bbl intake, and factory (cast iron) heads, (with a Holley 750 DP on top). I’ve played with a Street Dom intake, it’s probably helping your top end mph a little (I only gained about ½- ¾ a mph with one), but it may be hurting your low end torque, and therefore your 60 ft.
I run the purple 484/282 cam. I’m not sure how it compares to your comp cam, but I know a few people who have switched from Comp cams that are supposedly similar to the 484/284, to the 484/284, in mild 440’s and 383’s, and all have gone quicker with the mopar cam.
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Re: Opinions on my set up
[Re: MikeyT]
#495888
10/13/09 01:00 PM
10/13/09 01:00 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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I'd start with tires and a pinion snubber (if you're not already runnig one), and see where that get's you. Good luck
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Re: Opinions on my set up
#495889
10/13/09 01:25 PM
10/13/09 01:25 PM
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Joined: Feb 2003
Posts: 484
The State of Hockey
2qik4u
mopar
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mopar
Joined: Feb 2003
Posts: 484
The State of Hockey
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Quote:
Quote:
your car is not 3900 pounds, so no he's not making enough hp to run 12s. he's making good hp for what he has and I agree he needs to work on the 60' which isn't bad for what he has either. more converter,better tire,maybe a gear change would probably help. also a better carb/intake may help.
That's wrong, Tony.........105 IS enough speed to go 12's at ANY weight...........ALL he needs is traction and a converter swap and I guarantee it'll run at least 12.50's..........and with a converter swap and sticky tires, I bet it'll pick up 2MPH.......
I've had LOTS of 3,900 to 4,000LB cars run mid 12's in the 105MPH range even with 3.55 gears..........
I would agree 105 mph indicates the car has enough HP to run 12's.
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Re: Opinions on my set up
#495890
10/13/09 03:45 PM
10/13/09 03:45 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
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I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
Quote:
your car is not 3900 pounds, so no he's not making enough hp to run 12s. he's making good hp for what he has and I agree he needs to work on the 60' which isn't bad for what he has either. more converter,better tire,maybe a gear change would probably help. also a better carb/intake may help.
That's wrong, Tony.........105 IS enough speed to go 12's at ANY weight...........ALL he needs is traction and a converter swap and I guarantee it'll run at least 12.50's..........and with a converter swap and sticky tires, I bet it'll pick up 2MPH.......
I've had LOTS of 3,900 to 4,000LB cars run mid 12's in the 105MPH range even with 3.55 gears..........
maybe if he makes the right changes, we will see.
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Re: Opinions on my set up
[Re: MikeyT]
#495891
10/13/09 03:59 PM
10/13/09 03:59 PM
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Joined: Feb 2006
Posts: 1,949
land of 10,000______'s
BDS871Cuda
top fuel
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top fuel
Joined: Feb 2006
Posts: 1,949
land of 10,000______'s
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Quote:
stock 440 aluminum heads
Maybe this is it and i should accept it, but any pointers would be great.
Mike
Mike,
give us the 411 on the 440 aluminum heads.
Are they MP452's? What kind of stock head?
With 10 to 1, I would go bigger cam, bigger carb,
more converter. Get the most out of the aluminum
heads.
Snap your neck, mega G-force launch, is all I want!
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Re: Opinions on my set up
[Re: BDS871Cuda]
#495893
10/13/09 06:20 PM
10/13/09 06:20 PM
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Joined: Jul 2004
Posts: 4,732
Watertown, WI
MikeyT
OP
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OP
master
Joined: Jul 2004
Posts: 4,732
Watertown, WI
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Wow, thanks guys! Quote:
Quote:
stock 440 aluminum heads
Maybe this is it and i should accept it, but any pointers would be great.
Mike
Mike,
give us the 411 on the 440 aluminum heads.
Are they MP452's? What kind of stock head?
With 10 to 1, I would go bigger cam, bigger carb,
more converter. Get the most out of the aluminum
heads.
sorry they are 440 source aluminum heads! I've done nothing other then put the4m on the car.
They flow pretty good except on the exhaust side
.3 205.5 /140.9
.4 242.1/ 161
.5265.2/173
.6 274/ 182
Would a turn on the chassis dyno help as well?
Mike
1969 Dodge Dart Swinger
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Re: Opinions on my set up
[Re: MikeyT]
#495894
10/13/09 07:13 PM
10/13/09 07:13 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Quote:
Would a turn on the chassis dyno help as well?
Mike
There are a LOT of things that will help........more stroke, having those heads fixed, a real camshaft, and on and on.......
It depends on what you're trying to accomplish......If you want to get into the 12's as cheaply as possible, put some sticky tires on it and if that doesn't get it there, loosen the converter to about 3,800 and you'll easily run mid 12's........
If you want to get into the 12's on hard tires, you'll need to work on the suspension and it may take a little more power, which equals tuning.........
What EXACTLY are you trying to accomplish?
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Re: Opinions on my set up
#495895
10/13/09 07:24 PM
10/13/09 07:24 PM
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Joined: Jul 2004
Posts: 4,732
Watertown, WI
MikeyT
OP
master
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OP
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Joined: Jul 2004
Posts: 4,732
Watertown, WI
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Big Squeeze
What I would like is to get a decent street thumper that can hang with some of the other guys in my car group. Most of these guys have street tuned imports that are well in the 12' and I would like to be at least respectable, while retaining driveablility.
Mike
1969 Dodge Dart Swinger
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Re: Opinions on my set up
[Re: MikeyT]
#495896
10/13/09 08:44 PM
10/13/09 08:44 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Quote:
Big Squeeze
What I would like is to get a decent street thumper that can hang with some of the other guys in my car group. Most of these guys have street tuned imports that are well in the 12' and I would like to be at least respectable, while retaining driveablility.
Mike
How quick is "respectable" in your book and what kind of tire do you plan on racing on???
Like mentioned, slicks and converter swap and you'll run mid 12's........
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