Re: pump gas 340
[Re: bigblocka]
#1692543
10/30/14 03:19 PM
10/30/14 03:19 PM
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Joined: Sep 2007
Posts: 1,890
Spahn Ranch
RMCHRGR
top fuel
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top fuel
Joined: Sep 2007
Posts: 1,890
Spahn Ranch
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Based on my timeslips and weight, (3,200 w. me in it) my street machine Duster 340 with unported W2 2.08 heads, Victor intake, .557 purple cam and 750 double pumper puts out a little over 400, maybe 415-425 on a good day? Figuring for 20% driveline loss I think I'm getting around 320-325 at the wheels.
Mine idles around 1,000-1,100 rpm with about 7" of vacuum. Timing is 20 degrees initial and 36 total all in around 1,800 rpm. I shift it at 6,800 and last time I was at the track it went over 7,200 a few times. Lash is .026" intake and .028" exhaust hot.
Cranking compression is around 180 psi so I think it's around 10.5:1? Not sure, have not had the heads off. It was built by someone else before I got the car.
Could it be making more or less? I don't know. There's basically no torque off the line. It likes fuel too. It needs a better converter (currently 10" 3,800 stall) and more gear than the 4.10 that's in it now. Porting the heads would greatly help too. Probably could use a camshaft upgrade also but then I'm starting to get away from practical street territory. It's pretty high strung now as it is.
'71 Duster
'17 Ram 1500
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Re: pump gas 340
[Re: bigblocka]
#1692544
10/30/14 03:28 PM
10/30/14 03:28 PM
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Joined: Jan 2003
Posts: 11,711
Portage,michigan
B3422W5
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 11,711
Portage,michigan
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Quote:
just wondering how much hp you guys are making with your non stroked pump gas 340.
I have a non stroked 318 that has run best in my signature so far. Tiny hydraulic cam, pump gas, mild 4.10 gear. It's well thought out by the guy who built it, makes around 480 flywheel horsepower.
If I get rid of all the accessories I am driving( stock fan, water pump, power steering etc) and get it better sorted out, only been out twice with it, should run 11.50's and it's ultra street able. Can drive it anywhere.
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
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Re: pump gas 340
[Re: B3422W5]
#1692545
10/30/14 06:30 PM
10/30/14 06:30 PM
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Joined: Jun 2004
Posts: 148
Montgomery, PA
dodge340dart
member
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member
Joined: Jun 2004
Posts: 148
Montgomery, PA
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I run 93 octane pump gas in my .060" over 340. I have a .557 DC camshaft, 10.2:1 compression with Edelbrock heads (2.02 intake, 1.60 exhaust). I run a factory steel crank with h-beam rods and TRW pistons. It is topped with an Edelbrock Torquer II and a Holley 830cfm carburetor. I have run 11.35et doing the math that is 412hp at the wheels with a 3050lb car (with me). I have run it on my company's Mustang dyno and the hp peak was 409.34hp@6200rpm. I am guessing the flywheel hp is around 470ish. I have the camshaft advanced, I leave at 3000rpm (footbrake), shift at 6400rpm and trap at around 6500rpm with 4.10 gears. I have a best 60ft of 1.50 but usually around 1.53-1.55 depending upon the track conditions.
2011 & 2012 Beaver Springs Dragway Outlaw Street Champion
2012 BSD Friday Street Racer Driver of the Year
3-time Jr. Stock Eliminator
2-time Mean Street Eliminator
'69 340 Dart 1.500 60ft, 11.359et, 117.08mph
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Re: pump gas 340
[Re: bigblocka]
#1692548
11/01/14 01:24 AM
11/01/14 01:24 AM
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Joined: Jun 2004
Posts: 148
Montgomery, PA
dodge340dart
member
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member
Joined: Jun 2004
Posts: 148
Montgomery, PA
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Bigblocka,
I run Hoosier 26"x9" slicks. They are kind of small but they fit in the stock location on 15"x7" Weld Wheels with a 4" offset.
Chris
2011 & 2012 Beaver Springs Dragway Outlaw Street Champion
2012 BSD Friday Street Racer Driver of the Year
3-time Jr. Stock Eliminator
2-time Mean Street Eliminator
'69 340 Dart 1.500 60ft, 11.359et, 117.08mph
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You got a couple hundred pounds on me though, need to get back on the weight loss program. 
