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You can get any length you need through Smith Bros. or Manton. Be aware of what your effective length is. Measure pushrod length.

None.

OMM Thank you for the clarification. The bolt holes on the heads I am using are sufficient diameter so no need for me to do anything to the stud or hole. If it was too tight I would definitely enlarge the hole .0025” or whatever. At least I know to check for it now. If this were a dedicated...

For my own edification and to clear up any confusion, here are some pics comparing a stock head bolt to an ARP head stud. OMM used the word 'taper' to describe this situation but I would say it's more of a step. Normally I'd think of a taper being like the conical area underneath the wider part...

This is an exxageration but trying to oil the adjuster tips through the pushrods is sort of like filling up a Dixie cup with a garden hose. Of course some water will go in the cup but the majority of it won't and will invariably just splash on the ground. Even if you reduce the volume coming out...

Several years ago before the block was machined, I spent a lot of time de burring it inside and out and made sure all the openings in the lifter valley were smoothed. The lifter valley is also painted with Glyptal which supposedly promotes drain back by keeping the oil from absorbing into the...

Yeah, I tend to agree with the above. Sorry Oldmanmopar, even though I sort of understand the concept, I'm really not seeing the benefit of the recess in a real-world situation. Besides, reason says that if cutting a relief in that particular stud is 100% necessary, ARP would provide a modifed...

I could be wrong but after reading about pushrod oiling until my head was going to explode, I'm of the opinion that too much oil up top is not a good thing. If there's excess oil just sitting there in the head trough you end up starving the bottom end where the oil is needed the most. Wives...

Come on John, you realize we have to bring things like this up for the eight millionth time or we'd have no forum. I decided against doing it anyway. I'll be happy if/when I get to a point where I need to be genuinely concerned about it.

Thanks. I had to go back and re-read your statement about the factory head bolt. I didn't realize that position has a tapered shank so this all makes sense now. You're essentially putting the oiling system capacity back to the stock configuration. Since the stud is a consistent diameter, it...

I looked down the cylinder head bolt hole next to the rocker shaft stand with the oil feed and I see the two holes in the stud bore. I did not realize that bolt hole was exposed to pressurized oil from the gallery, my apologies. Regardless - what exactly does the trough do? Is it just to allow...

Yes, thanks, I had figured that out. Understand about blocking the passage in the deck is an option and that the proper pushrod oiling rocker arms are needed when the passage is blocked. Like your picture, the oil hole in the Hughes rockers is in the back of the shaft bore and goes through the...

Not trying to be argumentative here but I looked down that bolt hole in my block with a light and could not see any oiling provision in it. I don't see how any oil can get up the stud. Maybe it would drain down but to where? What am I missing? if there is an oil hole in the bolt threads...

Cylinder heads are fairly serious, I'd say they flow at least 300cfm. Headers are 1 7/8" primary tubes. Cam is a solid roller, 263/268 @.050". In general, I'd agree there's no reason to rev a stroker that high. In fact, the previous configuration of this motor stopped making power at 6,000 rpm...

I am in the process of finishing up my 416" and have been checking the pushrod length and geometry. Reading up on all this stuff made a light go off in my head. Do I need to convert to pushrod oiling? The reason I'm asking is because I am considering getting a set of cup adjuster screws which...

I agree. And with a 3.91 gear which seems like it wouldn’t be adequate. But that just proves that conventional wisdom is not always correct. Might be some ‘magic‘ in the converter too. Regardless, the car just works. Dusters make the best race cars!

Are people really that oblivious? It's painful and sad reading through the comments. Had no idea that "appearing" was such a tough word for people to grasp. Has to be an odd feeling for Brian... he achieved this awesome thing that he should rightfully be proud of but then hundreds of random...

Nice! Shock adjustments? Tire pressure? Starting line RPM? All of it?

Didn't realize that you guys negotiate the jump but I guess it makes sense. I think Bryan usually runs a little quicker than that? He looks to be getting good bite with the stick though. You seem to have the gas pedal feathering thing down. Your car is making some power for sure. 904 or P.F...

I saw a video of your round 3 race against Bryan. He got out on you but obviously you drove around him, nice job. Gotta get myself down to this event next year, looks like it was a fun day.

How about an old-school 323” with max ported W2 heads, big solid roller and a tunnel ram? Like a ‘70s Modified Eliminator combo. Maybe use a lightened 273 crank and some hard block and all the oiling mods you can throw at it. Spin it to 8,000 rpm with a clutchless 4 speed and let it eat! Only...

Yeah, that's the intake manifold exhaust heat crossover, sorry for the confusion. I suppose it could technically be an exhaust leak too but not in the traditional sense like from a manifold or pipe. I'm not sure if the crossover is considered to be part the exhaust system? Maybe it is somewhere...

Oh wow, there you go.

To clarify, you would not have an exhaust leak there, only a vacuum leak. The carb and choke are obviously part of the induction system, not the exhaust. The choke is of course regulated by engine temp. The choke well is just a closed chamber that provides a relatively accurate place for the...

Well the swirl vein thing is there in these particular "Mopar" heads so I don't see the harm. I get it though, we're not here to discuss LS stuff in general but any info on how things work and what is needed to make it better is always good no matter what the end user does with it.

"Swirl vein", "flag", "wing", etc. Seems to be a lot of debate on that in LS world. From what I was able to gather in a quick search and like waht you alluded to in post #3, they generally get removed for max effort porting but on anything less it just gets profiled/cleaned up. Would be...

My now ancient 416” awaiting some top end updates. Headers recently went to a new home down in Florida. Small blocks rule.

OP might want look at Sprint car stuff for ideas. 410" combos seem pretty standard but I believe they are A8 based which is a totally different animal than a 340 resto block. The A8 is an aluminum dry sump block. Big $$$$$ if you can even find one, like $1X,***+. Sprint Car engine book. 2015...

"Wedge" intake manifold thread on YB. Like I said already, I don't play in the W head sandbox but it's cool to see "Chrysler derived small block architecture" getting pushed to new heights.

BTW, since we're spending 79Powerwagon's money - what is the budget here, Sir? Unlimited? If so, 700 hp from a small bock is no problem just call Brett. Or is it more like "let's try not go over $10K and I'll be happy with what I end up with" or even "I got a couple decent parts and maybe $3-4...