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Re: 10 sec small block 340's
[Re: Sb Valiant]
#1465714
07/10/13 01:28 AM
07/10/13 01:28 AM
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Joined: Aug 2009
Posts: 456
corpus christi tex
Cheatham
mopar
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mopar
Joined: Aug 2009
Posts: 456
corpus christi tex
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back in 90 built a .030 trw domed stock stoke loosely machined crank and bore clearances stock rods machined on tight side for bearing clamping, o-ringed, usead a narrow rear main bearing, tubed block, external oil lines, X heads I ported, roller .275 @ 050 .628 lift, h/s rockers victor intake 2 in headmans on adapter plates, in 2700 72 duster 5.13 ladder bar 8in turbo action manual v/b 727, 31x13x15 slicks on race fuel 830 carb ran 11.30s on 750alky 10.90s, even with a near stock 340 same car ran 12.20s, it was just a good built car.
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Re: 10 sec small block 340's
[Re: Cheatham]
#1465716
07/10/13 01:45 AM
07/10/13 01:45 AM
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Joined: Jan 2003
Posts: 20,762
A collage of whims
topside
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 20,762
A collage of whims
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Not all that hard to do, really: back in the mid-70s my Duster (the Ed Hamburger car) was the first SS/IA car in the 10s and had the NHRA record for a while.
Mid-late '90s with a 358" 340, iron W2s, Crane flat tappet, basic 904, 5.38 gear & 13x31 tire, modified SS springs, I was running 10.50s in decent air.
Now 368" R1 block, Batten W2s, Comp roller, 6000 stall, otherwise pretty much the same, low 10s @ 3500' DA with an 850 Holley and no real tuning, through race bullet mufflers.
By today's standards, nothing really trick: Jack Arnew control arms and a couple of old SS tricks is all. Did have to add wheelie bars after a 300' ride on the rear bumper, though.
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Re: 10 sec small block 340's
[Re: Sb Valiant]
#1465718
07/10/13 09:13 AM
07/10/13 09:13 AM
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Joined: Oct 2008
Posts: 458
Michigan
BPE
mopar
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mopar
Joined: Oct 2008
Posts: 458
Michigan
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Vic's S/ST3040 stock stroke 340, 10.28 to 1,factory cast iron heads that he ported on pump gas. This was the first 9 sec. pass he made, eventually I think it went 9.78 in better air. 904 with a 6250 convertor, 557 gear and a 31" tire. http://www.youtube.com/watch?v=XUqBDDtKYkkRod
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Re: 10 sec small block 340's
[Re: BPE]
#1465720
07/10/13 09:46 AM
07/10/13 09:46 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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I was running 10.1s with the engine thats going into my Rampage now... was in the race car as my back up engine... its a 10.6:1 with iron W-2s home ported.. .640/.640 roller, home made headers... back then it was a stock stroke with 4.88 gears and 31" tire... now its a 3.79 stroke and runs 9.50s in the same car 
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Re: 10 sec small block 340's
[Re: MR_P_BODY]
#1465721
07/10/13 12:28 PM
07/10/13 12:28 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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One of the better running combo's I have seen was a stock stroke 360.
3200 pound 71 cuda, 727 trans, 8 inch convertor, stock eddies, 525/305 comp hydraulic cam, race demon, about 12 to 1 compression with 1 7/8 headers.
ran 10.90's at 121/122 or so, thought that was impressive at that weight with unported heads and a hydraulic camshaft.
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: 10 sec small block 340's
[Re: B3422W5]
#1465722
07/10/13 01:01 PM
07/10/13 01:01 PM
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Joined: Mar 2007
Posts: 1,608
Rudolph, Ohio
moparguy7074
top fuel
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top fuel
Joined: Mar 2007
Posts: 1,608
Rudolph, Ohio
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Quote:
One of the better running combo's I have seen was a stock stroke 360.
3200 pound 71 cuda, 727 trans, 8 inch convertor, stock eddies, 525/305 comp hydraulic cam, race demon, about 12 to 1 compression with 1 7/8 headers.
ran 10.90's at 121/122 or so, thought that was impressive at that weight with unported heads and a hydraulic camshaft.
I have a stock stroke .030 360 in my car, and have gone 10.56. It's nothing special, kb 107s, .525 solid cam, mild ported eddys, m1 intake and 850 alcohol QF carb. It has a 9" J converter, 727 w/transbrake, and 4.30 rear gear with 29" tires. 
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Re: 10 sec small block 340's
[Re: moparguy7074]
#1465723
07/10/13 01:12 PM
07/10/13 01:12 PM
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Joined: Feb 2009
Posts: 1,532
off the grid
340B5
pro stock
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pro stock
Joined: Feb 2009
Posts: 1,532
off the grid
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From what I've learned w/ my 340;
Torque is the name of the game and a stock stroke 340 doesn't make much down low, so you have to spin it, and of course to spin it you need spring pressure and a cam that works in that rpm range( Im gonna say upwards of 8000 rpm)
If I had to use a stock stroke in a 340 to run 10sec., I'd use a solid roller cam, but still consider a solid flat tappet. Cam timing is everything.
Yeah, it's got a smallblock.
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Re: 10 sec small block 340's
[Re: 340B5]
#1465724
07/10/13 01:18 PM
07/10/13 01:18 PM
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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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There is a guy at the local track who had one. 10.70 car
Stock stroke 340, 12-13:1 Ported W2's, big solid roller .700+ lift with 1.6's, 727, 5.13 gears and 29.5" tall slick.
He built a 418 short block for it, changed the gear ratio and the car goes 10.teens now.
-Dustin
67 Dart, 9 second, 392" G3 Hemi
68 Barracuda 340 F/SA
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Re: 10 sec small block 340's
[Re: Triple Threat]
#1465726
07/10/13 01:31 PM
07/10/13 01:31 PM
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Joined: Feb 2003
Posts: 4,953
Houston, Texas
TheOtherDodge
master
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master
Joined: Feb 2003
Posts: 4,953
Houston, Texas
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Buddy of mine has a stock stroke 340, pump gas, Eddy Heads, around a .550 hydraulic roller (can't remember exact), 4.88 gear, 31" tire, 4500 stall, and has gone 8.80's. N/A
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Re: 10 sec small block 340's
[Re: TheOtherDodge]
#1465727
07/10/13 02:23 PM
07/10/13 02:23 PM
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Joined: Nov 2004
Posts: 1,745
Maryland
340_Dart
top fuel
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top fuel
Joined: Nov 2004
Posts: 1,745
Maryland
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Quote:
Buddy of mine has a stock stroke 340, pump gas, Eddy Heads, around a .550 hydraulic roller (can't remember exact), 4.88 gear, 31" tire, 4500 stall, and has gone 8.80's. N/A
Dragster?
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Re: 10 sec small block 340's
[Re: 340_Dart]
#1465728
07/10/13 02:39 PM
07/10/13 02:39 PM
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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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Quote:
Quote:
Buddy of mine has a stock stroke 340, pump gas, Eddy Heads, around a .550 hydraulic roller (can't remember exact), 4.88 gear, 31" tire, 4500 stall, and has gone 8.80's. N/A
Dragster?
Must be, thats about right, for a 500HP combo to trap 150mph @1800 pounds.
-Dustin
67 Dart, 9 second, 392" G3 Hemi
68 Barracuda 340 F/SA
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Re: 10 sec small block 340's
[Re: 340_Dart]
#1465729
07/10/13 04:31 PM
07/10/13 04:31 PM
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Joined: Nov 2009
Posts: 3,082
St. Paul , Mn.
tubtar
master
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master
Joined: Nov 2009
Posts: 3,082
St. Paul , Mn.
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Quote:
Quote:
Buddy of mine has a stock stroke 340, pump gas, Eddy Heads, around a .550 hydraulic roller (can't remember exact), 4.88 gear, 31" tire, 4500 stall, and has gone 8.80's. N/A
Dragster?
Soft 1/8th mile ?  
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Re: 10 sec small block 340's
[Re: moparguy7074]
#1465730
07/10/13 04:43 PM
07/10/13 04:43 PM
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Joined: Nov 2004
Posts: 1,745
Maryland
340_Dart
top fuel
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top fuel
Joined: Nov 2004
Posts: 1,745
Maryland
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Quote:
[
I have a stock stroke .030 360 in my car, and have gone 10.56. It's nothing special, kb 107s, .525 solid cam, mild ported eddys, m1 intake and 850 alcohol QF carb. It has a 9" J converter, 727 w/transbrake, and 4.30 rear gear with 29" tires.
Sounds like a strong runner. What cam is it? Any head flow specs?
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Re: 10 sec small block 340's
[Re: tubtar]
#1465731
07/10/13 06:09 PM
07/10/13 06:09 PM
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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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Quote:
Quote:
Quote:
Buddy of mine has a stock stroke 340, pump gas, Eddy Heads, around a .550 hydraulic roller (can't remember exact), 4.88 gear, 31" tire, 4500 stall, and has gone 8.80's. N/A
Dragster?
Soft 1/8th mile ?
Thats my opinion.. to run 8.80s in the 1/4 with a
4.88 gear its gonna have to turn well above what a
hyd roller will go to.... JMO
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Besides the engine combo if anyone would like to share about the car itself and all the tricked out parts you might be using in the suspension 
and I think he was on a street tire