Post your 12 second small block combos

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4th time out with the car and my best time so far
12.3466 at 110.69 mph
340 with iron heads
750 Holley double pumper
P4532851 intake
Comp cams XE 275
1 5/8" headers
904 with 2200 stall
4.1 diff with 28 x 9 Hoosiers
60' was 1.83 and shifting at 6000
crossed the line at 6100
 
little update best so far on my combo 12.16 111 mph my combo on page 9 or 10
 
dragfish said:
well finally have an update on my car with new combo 73 Duster
360 40 over pistons in the hole (got motor but with iron heads in a trade)
eddie's rpm heads 63 cc bee hive springs stainless rockers
Hughes solid cam 238/242 duration @50 .558/564 stl3842as-08
rpm intake 750 holley HP
1 5/8 hooker header
3200 stall converter
4.10 gear w/spool nitto 275 drag radial
727 with TCI reverse manual valve body low apply

TNT sat night off trailer 12.37 108 mph 2nd run spun tires bad 12.40 109 stopped TNT due to an oil leak fearing rear main had this problem going to pull motor to replace I run a kevco pan also it has more in it shifting at 5800 i think 12 teens are in it for a low compression motor 9:1 i run 2 1/2" exhaust dumping at axle with bullet race mufflers
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dragfish said:
little update best so far on my combo 12.16 111 mph my combo on page 9 or 10
Click to expand...

I don’t know if this is the right post but you could have linked it or quoted it like I did for you. It just makes it easier for those looking for combos for themselves.

Keep up the good work!
 
rumblefish360 said:
I don’t know if this is the right post but you could have linked it or quoted it like I did for you. It just makes it easier for those looking for combos for themselves.

Keep up the good work!
Click to expand...
thanks i think i can squeeze a little more out of her on another note got a new engine i picked up 318 standard bore steel crank,rods,and forged pistons i wonder if I can make it run we'll see.
 
6pak said:
Stripped 73 Duster
Still 3275 lbs w my fat *** in it.

5.9 Magnum
Cleaned up iron heads.
THUMPR cam
750 AFB
Crosswinds intake
Hooker Headers w 16” collectors
A999 transmission
3.91 rear
10” slicks

12.62 sec. 109mph
Thiinkin I could do better.
Click to expand...



UPDATE - finally got back to the track.
ADDED -
Edelbrock 800 AVS
Cut 4”” off collectors
Removed 70lbs of weight.
No fan, electric water pump.

12.21@114 mph
Almost a half a second faster. It was a different ride.
And Yes, With the small Thumpr cam.
 
6pak said:
3100lb Duster w Drvr

5.9 mag
Engine only driving alternator

10.5 KB pistons
Cleaned up mag heads
Thumpr smallest roller 284/291
Edelbrock 800 cfm AVS
Chinese air gap
Distrib locked out @ 34*
1 5/8” hookers
A999 auto launched in drive
TCI Breakaway converter
3.91 gear
9” x 27” Mickey Thompsons

Best yet
12.21 @ 113.8 mph
With
.26 reaction and 1.9 60’
Accumeter tach light set @ 6000
And never cam on
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So you're short shiftin'?
 
sorry about that, must have been having a bad day,to each his own . 1971 valient in progress,64 340 dart,dakota race pick up ,1974 street duster, ,1963 dart 340 runs 11.30 in quarter
 
Guess I can update here .....
'76 Duster
LA 360, OOTB speedmaster heads from black friday sale.. lol, .427 lift 204 @ 050 duration intake/.455 212 @ 050 exhaust, eddy intake and Brawler/AVS 2 (same day)
8 3/4 rear with 3.23 open
904 (stock tranny with stock 318 2bbl converter)
12.8's @ 105 mph
 
1972 Dart
#3480 with driver
360
Factory crank .010/.010 balanced
Factory rods reconditioned Arp bolts
KB 107 flat top pistons
Comp.9.8 to 1
Camshaft Mopar 508/292
Cylinder Heads stock J heads
1.88 intake valve
340 valve springs
Factory rockers and push rods
Edelbrock TM -5 Intake
Holley 750 double pump
Hooker headers
Holley Blue Pump
727 tans. Reverse manual valve body
Coan 10 inch 3500 Converter
8 3/4 rear
3.91 gear
Super Stock springs
90/10 front shocks
Best ET 11.92 112 with 26x8 slicks
Leave at 3000 shift 6000 traps 6000
Switched to 28x10 slicks
Best ET 11.99 110
Leave at 3000 shift 6000 traps 5500
 
bigoldarin said:
1972 Dart
#3480 with driver
360
Factory crank .010/.010 balanced
Factory rods reconditioned Arp bolts
KB 107 flat top pistons
Comp.9.8 to 1
Camshaft Mopar 508/292
Cylinder Heads stock J heads
1.88 intake valve
340 valve springs
Factory rockers and push rods
Edelbrock TM -5 Intake
Holley 750 double pump
Hooker headers
Holley Blue Pump
727 tans. Reverse manual valve body
Coan 10 inch 3500 Converter
8 3/4 rear
3.91 gear
Super Stock springs
90/10 front shocks
Best ET 11.92 112 with 26x8 slicks
Leave at 3000 shift 6000 traps 6000
Switched to 28x10 slicks
Best ET 11.99 110
Leave at 3000 shift 6000 traps 5500
Click to expand...
Post 11 second small block combos
:thumbsup:
 
rmchrgr said:
Just doing a little internet bench racing here. I'm sorting out a 340 on paper using the old "How To Hot Rod Small Block Mopars" tables in the back of the book. I want to get into the 12's. The tables are basically saying use a TQ or Holley 7-850, headers, (duh) Holley Strip Dominator/M1, the MP .528 solid cam and an electronic distributor.

I'm curious though as to how you got into the 12's with your small block A-body. Looking for non-stroker stuff here - 3.31" arm only.

Please list engine specs like cam, compression, head choice, ported or not, valve size, carb, pistons etc., chassis/trans/driveline, tire size, weight of the car if you know it and any other pertinent info.

Pics are good too!
Click to expand...
Son...this hobby is expensive any way you slice it. Mopar is almost double the cost of most other brands, however the tall deck & exhaust ports of a non hemispheric cylinder head. All and any old stock parts are 100% junk. Yes sir these x & J heads are boat anchors as its 2024 not 1969. Now w2 heads were great heads for racing but super expensive...I built a set! Stock stroke is for matching numbers ! A budget is a budget yes. A stroker crank is worth twice its cost. The tall deck of most mopar has a fetish with more stroke. The stock vacume signals are second to none, more stroke quadruple that ,thus huge intake capabilities, then the exhaust valve design is already steps ahead , follow or not its OK but this is all data and analytics. I see some with huge intakes and fancy carburetors! Junk! A fast xfi is nothing short of perfection. As we all do and it's true as the nose on your face....
While you sit on the can reading about Google bench racing STOP JUST STOP! I see all the googlecation clowns on here trying to build a record breaking engine with no money or cheap bastards. It is what it is. A 340 block, nice. Bore n shorter stroke in the family, a 4" stroke and a clean bore done with a plate can be a 408-416 ! Edelbrock heads with a wise port job not Johnny with his die grinder, a street roller cam ,converter ,8 3 quarter with a good 727 and thin snap rings aka 5 clutch disc's. 5.o lever n deep pan.
Nothing less then mid 10's on pump gas.
Why **** away good money on the monkey with an extra g or so you can have the open grinder.
Take it as you will but asking bench racers or slow time slips questions will only get you tail lights.
THERE IS NO REPLACEMENT FPR DISPLASMENT! TORQUE SON TORQUE!
HORSEPOWER is only a mathematical equation. Short block, what is a perfect cam? This is the queof all questions, with a winning answer. A lumpy idle or etc is not the answer. Big single plane intakes are usually junk in lower rpm. No need to rev a stroker engine on pump gas as the torque the byproduct. No one in real race world gives secrets , I'm retired lol. Ask some of our mopar kings like Mr Barton, muscle motors, etc. Try Indy cylinder heads, they aren't much of a technical help verbally but probably the best products for mopar.
Kind regards.
 
??? “SON” ???

@twin 640

W2’s “Super Expensive?” Ummm, No, but do cost more, yes indeed. Speaking of just the head itself.

Funny how he replied to a post from 2010 though!
 
rmchrgr said:
Right? WTF?

Bunch of pedantic nonsense anyway.

“Back when I was racing my 440 Hemi 6 pack I would beat all the 396 GTOs with just a flipped air cleaner lid…”
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Yep! Then there is that guy….

My old third removed cuz had a 426 dual over head cammed quasi-moto inverse solid roller with 1.8 rockers and a 5 speed manual rock crusher with dual plated clutch run 9’s in his Duster all factory stock except the uncorked pipes off of the factory 2 inch header tube. He did use slicks though. It’s amazing to hat the factory sold sub 2,000 lbs cars with a warranty back in the day. Radio was also pretty good. Drive that back and forth a 100 miles one way to the track. Those 5.13 gears would whine a bit on 75 on the interstate but it was bearable.

What made it easy was driving king the beers and a little Mary Jane on the way to keep it interesting ya know!
 
crackedback said:
Where in the 12's you want to run? Top side, 10-10.5:1, xe268H, LD340/RPM/Air Gap, 750dp preferably an HP, iron J/O/U heads with mild clean up, stock/HD rockers, headers, 3500-3800 converter, 4.10-4.30 gears, 28x9 tire.

Make it hook and it will run 104-106 and high 12's.

Want to go faster, put a bigger cam in it and possibly step up the converter and heads.
Click to expand...
Lmao
 
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