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about 5 yrs ago, 1969 RR, 383, trw pistons, solid cam, 254/267, .540 lift, 5.13 gears and 28.5 x 10.5 slicks 4500 conv, shifted at 7200 rpm. ran 11.55 @ 116 MPH. and 906 heads.

the 340 came with a 10 1/2 clutch. it's a B&B style, best way to keep pedal off floor is to put a stop between pedal and floor the stock clutch will hold the load. we ran same clutch years ago, had no problems with it. a tach would help you a lot. good luck.

ok. stock 496 340 rod, 508 & 219 gms= 727. eagle H beam rod, 479 & 206 = 685 gms. eagle SIR rod, 420 & 192 = 612 gms.

the trw uses 1/16 rings both grooves

update, 11.18 @ 116 mph, same combo

recent update, 11.18 @ 116 mph

only at Denver, would 6.17 work. stock is limited to 9x30 tire

update, 11.21 @ 117 mph, same combo . no changes

I went from s/s springs to a calvert setup. I found a tenth faster in 60 '. car was more consistent on launch. I noticed one thing with s/s springs and snubber, the area above the rear wheel wells was starting to buckle out!!!! I could feel it and see it!!! yes, I have subframes tied. also...

hi, how much timing is in engine? are you running vac advance hooked up? total timing ??

hi, a dana 60 from a 1967 to 1972 ford 1/2 ton pickup is the lightest dana. there is only 32 # difference in weight. it has passenger car ends on it. simple to swap ends to mopar, add 8 3/4 axles and brakes. change front yoke to dana 1350, they are way cheaper vs truck dana's .

1972 duster, 340 , stock intake, T.Q. carb,8.5 cr, stock heads,1.88 & 1.60 precise 3 angle valve grind. jerico trans, 5.57 dana 60, 9x30 slicks, soft loc clutch.3345#, best is11.21 @ 117, 24. calvert style bars.

hi, question time!! are they flow testing one port at a time or whole manifold upside down on bench?? just curious.

hi, on the T.Q. all we do is lower or raise metering bar for primary jetting, and open or close air door for sec jetting. why is that hard?? very easy to tune.air door opening will richen or lean sec, moving metering bar will richen or lean pri mixture.

hi, the brad penn is the old green kendal oil. its a very good oil, i use 10-40 in my 340 motor. its still the green color. its worth it.

1972 duster 340 , hyd stockercam, stock intake and thermo Quad, 1.88 & 1.60 valves, 8.5 C.R. ross pistons, stock stroke crank, jerico trans, mcloed flywheel and clutch, dana 60, 5.57 gears, 9x 30 slicks, 3350 #, 11.37 @ 116 + mph

hi, what is timing set at?? total timing that is and rpm it comes in at?? launch rpm ??

hi, 340 makes 410 H.P. with 1.88 int valves, mopar stainless. the 1.88 has more port velocity , therefore, puts more air in cylinders = more power. for the street, the 1.88 is more than enough!! on the qualifing sheet at gainesville, 340 ran 10.98, was a 72 or 73 duster stocker.

hi do not sand blast!! the sand will stay in casting pores and get into motor. instead, take them to a machine shop, have them steelbrated. it's a tumbling machine, it removes rust, makes them look like new, the steel shot doesn't stay in casting. some will stay in water jackets, all you need...

hi, not trying to pour water on your fire, I assume the chassis is certified to run 9 sec ? you have fire jacket, pants, neck collar, shoes, and a FAA physical? I've seen guys touch that magical 9 sec, and not allowed to run till all those requirements have been met. and to get to exhaust, a...

hi what kind of model flow bench?? what was the test pressure? test pressure makes all the difference in the world showing flow numbers. high test pressure will show very high results. this is what most people want to see!! regardless if it's correct!! lower test pressure is more real world...

hi, do most the work in the bowls, blend the sharp edges, taper top of guides some.do not gasket match! port match is way better. reason is, if you open up the port at flange, it creates a big bulge in the air flow path. the air has to fill it before it can move on, this causes slowing of the...

it's not a purist or political correct, its what it required on stockers and super stockers. as for cost, they can be made to work for less than some of those holleys. they flow from 750 to 850 cfm.

hi, I see you don't think much of T.Q. carbs. how is it the stocker and super stockers go so fast with them? being as how they have to run them. lots people don't like Qjets, but they can be made to work very well. just curious.

hi, from all the big flow numbers shown here, what test pressure they taken at? was that 7'38 in the 1/4 mile? or 1/8 mile? just curious. big numbers sell.

hi, the 73 manifold has EGR fittings in floor of manifold, 72 doesn't. the 71 & 72 manifolds are same casting number. carbs have different part number, otherwise the same. btw, this combo on a stocker will run very low 11 to high 10's. just looked up E/SA record, 360 duster, 10.49@ 123.94...

hi, I was running math on a stocker 340 motor. seems they get 1.25 hp per c i with stock heads ,manifold, carb, stock comp ratio, stock stroke, stock lift hyd cams.stock rocker arms. NO alum heads,after market int, no ported heads. no light weight rods.

hi, awhile back, I flow tested the stock 340 intake and a LD4B just for grins. test pressure was at 25", flow tested through one port, blocked others. flow numbers were, 197 CFM for the stock cast 340 Intake, LD4B 264 CFM. hmm ,

hi, hardened seats are not required. installing sst valves is the answer. if the motor is used in a truck or hauling heavy loads, then yes. another question, how can a 273 cost more?? they use same bearings, gaskets, cam/lifters, timing set, crank, rods, cast pistons cost bout the same!! only...

hi, the stock 920 head will out flow the 302. also, 920 has a closed chamber. the 273 head responds well to sst nail head valves. also, 920 head has more port velocity, which is needed to fill cylinders faster. you can do some mild bowl blending ,remove all sharp edges, this helps flow...