Post 11 second small block combos

[Fast340cuda]

340 block 4.06 bore x 3.58 stroke
10.5-1 compression
Edelbrock rpm heads
Cam motion solid flat tappet .545/.550 lift 252/257 dur @ .050
Victor 340 intake
Mighty demon 750
Holley red electric fuel pump, 3/8 fuel line
TTI headers and 3" h-pipe with aerochamber mufflers
4 speed
4.56 gears
Super stock springs, pinion snubber, /6 torsion bars
Hoosier QTP 27x10.50x15 tires


1/4 mile 11.68 @ 118, 1.7 60'

 

[BVoelzke]

68 Dart, 3150 lbs w/ driver, 363 in. Small block( Crate 360 short block) M/P forged crank, Scat rods, J.E. pistons, 11.2-1 comp. 590 lift mech. cam, W2 heads, Victor W2 intake, AED prepped 750, Tubular Auto. headers 1 7/8 , thru mufflers, 4700 stall Ultimate prepped 8 inch convertor, 904 manual valve body, narrowed 8 3/4 4.56 gears, M/W axles and spool on Hoosier QTPs runs consistent 11.50s at 114 with mid 1.50 60 fts car is capable of running mid 10s at 126 but is mechanical throttle stopped down to run 11.50s, new 408 Pump gas stroker motor coming soon!

 

[rumblefish360]

Seeing this car today leaves me with two things to say;

1: This picture does this car a dis-service because it is really freakin nice!

2: I wanna do this like combo as well one day.
(Come on lotto!)

What cam did ya run? The MP right?
I like it a lot. Not overly complicated, pretty simple approach of not fooling around running with proven parts.

 

[BVoelzke]

Thanks Rob, Yes its the M/P cam and its been a great reliable combo thats gone many rounds for over 7 years and over 700 runs.

 

[WA71swinger]

1971 Dart 360 .030
H beams rod, stock crank, SRP flattop pistons
Hughes 256/263 @.050 cam with 1.6 rockers
631/641 lift
Eddy Port Heads
Eddy Victor Intake
Holley HP 950
Mopar Distributor/MSD 6AL2
Hooker 5204 1 3/4 headers
904 trans with Tranzact Brake
Turbo Action 4400 series converter Flashes 5000+
8 3/4 with 4.56 spool (Probably needs 4.88..)
10 x 29 Hoosier Drag Slips
I think she shifts at 6500...

Best of 11.03 @ 121
Last Weekend 11.20 @ 118 carb needs more jet.

I know this is an old post but I do see a Feb 14' 1/4 mile time posted. I wanted to ask you how you got those 10x29 Hoosiers on your car. Spring location? Mini tub? flattened the inner wheel well? I need more tire at the track for traction. My car drives excellent on the street and I like the stance as it is. Don't want to mess that up to get the tires to hook at the track. Currently running 235/60/15 MT et streets. They are barely clearing the wheel well because the only aluminum wheel backspacing I could find was 3.75" for the LBP. Have ralleys with more back spacing (just short of 5")and I can barely fit 255-60-15 MT et streets on it with some rubbing on the street. The 255s are 10.1 section width. That seems to be the max without mods. Even the 29x9 Hoosiers lists an 11.4" section width. Any info/suggestions would be appreciated. David

 

[70aarcuda]

The 71 Dart has full tubs in the rear along with ladder bars and coil over shock. The frame rails are stock and the inside of the wheel well has been trimmed. It was trimmed before I tubbed the car. There is plenty of room for probably a 13 inch tire with the correct wheel back spacing. Oh...the axles have been shorted 2 inches on each side also...

Moving in the springs and doing at least a mini tub will greatly increase the room...

 

[D-50394]

I know this is an old post but I do see a Feb 14' 1/4 mile time posted. I wanted to ask you how you got those 10x29 Hoosiers on your car. Spring location? Mini tub? flattened the inner wheel well? I need more tire at the track for traction. My car drives excellent on the street and I like the stance as it is. Don't want to mess that up to get the tires to hook at the track. Currently running 235/60/15 MT et streets. They are barely clearing the wheel well because the only aluminum wheel backspacing I could find was 3.75" for the LBP. Have ralleys with more back spacing (just short of 5")and I can barely fit 255-60-15 MT et streets on it with some rubbing on the street. The 255s are 10.1 section width. That seems to be the max without mods. Even the 29x9 Hoosiers lists an 11.4" section width. Any info/suggestions would be appreciated. David

On my Demon I put a 28/10.5W on it by moving the leaf springs with the spring relocation kit. It moved the leaf springs in 3 in. and I bought wheels with 4 7/8 back spacing with stock width rear housing.

 

[Fast340cuda]

340 block 4.06 bore x 3.58 stroke
10.5-1 compression
Edelbrock rpm heads
Cam motion solid flat tappet .545/.550 lift 252/257 dur @ .050
Victor 340 intake
Mighty demon 750
Holley red electric fuel pump, 3/8 fuel line
TTI headers and 3" h-pipe with aerochamber mufflers
4 speed
4.56 gears
Super stock springs, pinion snubber, /6 torsion bars
Hoosier QTP 27x10.50x15 tires


1/4 mile 11.68 @ 118, 1.7 60'

Switch from victor 340 to M1 single plane:

11.47 @118, 1.6 60'

 

[rumblefish360]

Any work done to the heads?

 

[Fast340cuda]

Any work done to the heads?

Springs, retainers, keepers, valve job and guide clearances opened on the exhaust side.

 

[dusterdoug]

Switch from victor 340 to M1 single plane:

11.47 @118, 1.6 60'

That's a HUGE gain for an intake swap! Was it 100% intake to intake?

Poor Victor casting?
Mods to M1...porting?
Any fuel curve changes...jetting, PV's??
Same track and weather conditions as your previous best?
Launch and shift RPM the same???

Thanks!

 

[Fast340cuda]

That's a HUGE gain for an intake swap! Was it 100% intake to intake?

Poor Victor casting?
Mods to M1...porting?
Any fuel curve changes...jetting, PV's??
Same track and weather conditions as your previous best?
Launch and shift RPM the same???

Thanks!

Intake swap only. Both intakes gasket matched and are nice castings. I used moroso ab epoxy on the M1 carb flange to convert it from spreadbore to square flange. Hotter temp and poor track prep for the runs with the M1. Launch at 4500 rpm, shifting at 6600 rpm for both intakes. The M1 will easily out 60' the victor in my application and has the same top end. My overall 1/4 mile ET average with the victor was 11.8, average with the M1 is 11.5. Victor plenum is probably to large and runner length is too short for the RPM range I'm running.

 

[Timmy's Toy]

Upgraded the motor this summer. It was time to freshen it after 7 years in the car. I did say it was reliable; didn't I? Best pass so far is a 10.834 at 119.97. Go to the 10 second page to get more info.

Tim

 

[dwire67]

340 flat top pistons 591/595 roller cam M1 intake W2 heads 850 holley 4.56 dana 4000 stall Precision Industries 9.5" converter -engine built by Brian @ IMM engines -first time out this past weekend went 11.50 11.53 11.55 It was 92 degrees and 90% humidity Went 2 rounds - I think she has got some more in her -1.66 60' times and 117 MPH - the engine pulls unreal @ the top end

 

[360duster]

Hi,

i´m pretty excited, was at the drags this weekend, after some low 12 sec. passes i finally got an 11.98 @ 113.5 mph. 68 Valiant 2dr Sedan, full interior, 408 cui with Indy X-heads, Comp XR286HR cam, EDE Performer RPM, 750 Holley HP DP (AED). I recently did the trans and put in a 3500 stall converter (Turbo Action 17805st).

Now i have to repair the left front caliper, it´s sticking and i think i left some time there. Will try some 1.6 Rockers in near future. I´m positive that there´s more in it, best 60ft. time was 1.79, i think there´s also room for improvement.

Michael

p.s.: the pic is from last year....racing my swiss buddy Marc. He´s a nice guy with a cool 318 on juice, also in the eleventies.....

 

[jimbo17]

I went back to the drags last night with my aussie charger. Heres the specs.
360 stroker 410
10.5 flat top pistons
edelbrock heads 2.02 valves out of the box
edelbrock air gap intake
edelbrock 800 avs carb
Hughs roller cam 232@50 530 lift with Harland Sharp 1.5 roller rockers.(just a baby)
pacemaker tri y headers into 2.5 exhaust
msd ecurve ign set at 32 degrees total
tko 600 5 speed trans
borg warner 7 3/4 lsd diff
caltracs
Mickey Thomson ET street radials 235/60/15 (26 inch)
best timed last night was on first run 11.76 @117.00 with a 1.64 sixty foot
This was dropping the clutch at about two thousand revs.
Next run I got a bit more aggressive and dropped the clutch at three and a half but wheel spun all the way through first gear resulting in a 2.03 sixty foot for a 12.4
I had to keep the revs down as it would not launch good if I gave it any sort of revs.
I will go back when they have a day meeting for the mopar mayhem as the wed night meetings attract well over 150 cars and you are lined up about thirty deep x 6 lanes and there keep getting oil downs which affects traction for the rest of the night.

 

[shobes]

1975 Duster

appx weight 3500# with me but will know for sure in spring. Fiberglass hood/trunk lid/bumpers

360 magnum R block 4.060 bore 3.825 stroke 6.250 rod 396 ci
1050 Dominator Super Victor
Procomp heads, flowing 312/230
Custom Ractec flat top pistons 12.2 to 1
Custom Lunati roller cam ~.680 T&D roller rockers 1.6 MRL Pro PLUS soild roller lifters
3/8 pushrods PEP I beam rods HP bearings
Billet timing set w/tensioner Mallory 32 series dist 34* total Champion plugs
Mallory HyFire VI ingition control
Kevko oil pan Melling HV oil pump
TTI 1-7/8 race headers

833 18 spline 4 -speed Liberty pro shifted Mc Leod Dual disc clutch
Strange 60 4.30 gears w/true trac Comp Eng Slide a link drag shocks all 4 corners
28 x 9 hoosier slicks

11.158@122.86 with 1.584 60' launched ~5500 rpm

New combo only got a few runs in, did not get to launch where I think we'll end up, which is around 6000-6500 RPM. Fully expect she will get down in the 10's a ways, with a good launch/good track and a few more passes to tweak the shift RPM. Also will have the two step in play to control launch RPM better.

 

[rumblefish360]

Shobes! Congrats! That new MRL engine has your wheels up dealing out some biz I see there. Very nice. Keep us updated. Happy hunting the 10's!

 

[skrews]

72 Duster
3400 race weight
360
stock cast crank
stock rods with ARP bolts
$130 Sealed Power .050 down the hole 4 valve relief flat tops
596 heads moderately ported 1.88/1.6 valves peak flow 230/170 @28"
Hooker Super Comp 1.75 headers 17" extensions
252/252 @ .050 .528 lift solid 108 LSA cam
RPM Air Gap intake 750 double pumper
904 trans
8" ATI 5800 converter
8.75 rear with 4.56 spool
28.5 slick
90 octane pump gas

1.44 60 ft
7.01 at 94.97 1/8th mile
11.18 at 117.5 1/4 mile
1700 DA
Hoping I can get 10s out of this dumpster build motor.

 

[Abodybomber]

72 Duster
3400 race weight
360
stock cast crank
stock rods with ARP bolts
$130 Sealed Power .050 down the hole 4 valve relief flat tops
596 heads moderately ported 1.88/1.6 valves peak flow 230/170 @28"
Hooker Super Comp 1.75 headers 17" extensions
252/252 @ .050 .528 lift solid 108 LSA cam
RPM Air Gap intake 750 double pumper
904 trans
8" ATI 5800 converter
8.75 rear with 4.56 spool
28.5 slick
90 octane pump gas

1.44 60 ft
7.01 at 94.97 1/8th mile
11.18 at 117.5 1/4 mile
1700 DA
Hoping I can get 10s out of this dumpster build motor.

Badass,,,,

 

[dusterdoug]

72 Duster
3400 race weight
360
stock cast crank
stock rods with ARP bolts
$130 Sealed Power .050 down the hole 4 valve relief flat tops
596 heads moderately ported 1.88/1.6 valves peak flow 230/170 @28"
Hooker Super Comp 1.75 headers 17" extensions
252/252 @ .050 .528 lift solid 108 LSA cam
RPM Air Gap intake 750 double pumper
904 trans
8" ATI 5800 converter
8.75 rear with 4.56 spool
28.5 slick
90 octane pump gas

1.44 60 ft
7.01 at 94.97 1/8th mile
11.18 at 117.5 1/4 mile
1700 DA
Hoping I can get 10s out of this dumpster build motor.

IMPRESSIVE to say the least!

 

[joes68340s]

Finally got my 71 Duster out for tnt. Previous best was 11.70 at 112-113 mpg high 1.7 -1.8 sixty. 340 lots comp mild 560 lift crane solid mild ported X heads. strip Dominator 5000 stall conv 4.88 gears 29.5x12 slicks. Switch to full Caltrac dropped weight by installing Wilwood brakes lift off six pac hood. Best run back to back 11.30 115.6 mph 1.60 sixty. Car has more in it for a mild 340.

 

[Hot Metal]

Well not quite in the 10's gents, but almost, this was with my old '71 Fish 340 street/strip car.

Stock '71 340, 2.02's, no porting
All steel car+cage, race seats, no rears.
Stock leaf springs+snubber
Stock front end, old std. front shocks
4.30 gear, posi, 10x 28"
Manual 727, 4200 verter
850DP, Strip Dominator
Hedman chassis hdrs
110jets in Cheater plate system

11.01@123....ran 12.3@108 N/A

 

[joes68340s]

Ran a tnt with Duster at Sac this past Sat ran consistant 11.33 raised mph to 117 motor is pulling hard through traps needed to raise the rev limit chip to 7200 still hitting it. Motor wants more fuel. Love that mild stock stroke 340 and not much done with heads.

 

[rumblefish360]

Nice! Where is the previous post with your build parts?