6point6

I haven't measured the bore on this motor, just going by what the previous owner told me it was. It is definitely a 58mm stroke because I measured that. Judging by the response I'm going to assume there IS something I'm missing and I need to check my bore. But, I never questioned whether it's a 421 or not because it flat out hauls ass, faster than any other banshee I've personally ridden and For the price I paid I couldn't give a shit less what it is. It rips and that's all that matters to me. Haha

68mm bore, 4mil crank. Am I missing something? Rumor has it he's still around. But I know nothing about the guy so take my rumor for what it's worth haha

I'd be happy to sell it to ya, make me an offer! You're right, it was a mistype on my part. it is a stock cylinder 421. I've got too many terms floating around my head tonight with the cub/supercub/wampus cub/cheetah cub.....too many cubs haha

I've got a roller now! Here's how she sits

Time for an update I guess, plans have changed a little over the last couple months so I'll start here. I picked this one up for my wife a few weeks back, its a 421 cub cylinder with a cool head and T5's, it runs quite well and should be a lot of fun for her to ride next summer The engine in the middle one is getting donated to the far left one which is the one I'm building, engine is already torn down to the bare cases getting ready to be shipped off for trenching and having a 10mil crank fitted. I've decided to run the maxload bearings instead of TZ's also, a 521 is still the plan. I also picked up a nice set of used BB Shearer inframes for it. I'm going to strip the chassis down to the nothins and take it for powder coat within the next month or two, color is going to be a deep candy blue, A-arms and swingarm will both be chromed, I'm going to ditch the +10 stock style carrier for a +6/+8 roundhouse style carrier and an aluminum axle, as soon as I can find a nice set of shocks I'll be getting those, mainly looking for Shaw's but wouldn't mind Elka's or something else nice. Shee's got a long way to go, but we'll get there

Hell, how much for the engine too?

How much for the carbs and CPI inframes? I'm only three hours north of ya so I'd probably pick em up rather than make you ship

Very well could be, I'm not exactly sure what K&T does to a chassis when they modify one anyway haha

I found a picture of her back in her glory days, this is a K&T chassis with I believe a +10 swingarm, I won't be doing OOF pipes and the color is changing to something I haven't decided yet, I'm pretty excited to try something different

I'm working on it, I just don't have any to share at the moment [emoji41]

That's the downside to being a gearhead aint it? haha I watched several paddled 250's not even make it close the top over the weekend.....so no, A paddled 250 isn't going to touch it, besides, I have a paddle on now anyway i just didn't have anyone to take a video for me this weekend. But that's totally irrelevant to this thread.

So since I've decided that I've taken a CR500 about as far as one can go, i have decided its time to build one of the machines I could never touch with even my best running 500, the banshee.....a local friend of mine has offered to sell me his collection of banshee stuff, which includes a complete machine and a couple of chassis for a really good price. Me being me I can't leave anything stock so the plan is as follows: 10mil crank with TZ bearing 521 super cub top end Redline super cub head Straight cut gears with a billet 2nd gear Lockup clutch Shearer big bore inframes 39mm PWK's This bike will be strictly for dunes and I feel like I've got a pretty good recipe for a serious dune killer. What do the experts think? Chassis setup is taken care of already but I'm going to wait awhile before I say what's up my sleeve on that or post pictures. Haha

So when I get ready to start ordering parts what's a good source for the crank, cylinders, and pistons? I plan to order a redline head and shearer inframes, would 39mm pwk's be a good choice for carbs?

Yeah, this. Haha

Mostly dragging on the dunes, I'll be running with a couple guys that have 465 cubs https://www.bansheedepot.com/ProductInformation_001.asp

Sounds like the super cub is the way to go if the DM cylinders need cooled down a lot, I'd still like the bike to be somewhat rideable lol

According to banshee depot the DM cylinder is available in a 72mm bore also, I was just curious if there was a difference aside from the obvious fact that the DM cylinder uses the Honda CR style reeds.

I'm going to be building a 472 banshee and I've noticed there's those two types of cylinders, this bike will be built for dunes only and I'm wondering if there's much of a difference between the super cub and DM cylinders other than the reed blocks. Enlighten me, gents!

Oh I'm ready lol. My buddy works for the local GMC dealer and has a performance shop on the side, he's already built quite a few beefed up allisons, I could do the job, but he's better at it

Same year as mine then haha. My EFI live was done by IdahoRob from Adrenaline truck performance, I tow/haul stuff quite a bit and run on my 175hp tune pretty much all the time I'm not towing because that one gives me the best mileage. Maybe I'm just lucky, 35,000 deleted and tuned miles, no trans issues to report

What year is yours?

.

Nope, totally stock transmission haha. The 6 speeds are remarkably tough

2008 GMC duramax, a few things added, some exhaust parts fell off, just under 500hp to the tires.

Lmao. Well played