CK5
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Pie in the sky supercharger thread
- Thread starter my kids took the truck
- Start date
There is a local guy here, but from Illinois, running a small roots blower allmundervthe hood.
There's not a lot of options in roots type blowers that will fit under a stock hood. Procharger makes some nice units, they may be able to set one up for your driving style. It's worth a phone call to ask. Otherwise big block or turbo are your next best options. A turbo with a small exhaust housing will spool pretty fast at low rpms and can be easily installed on any engine.
Is that just because everything is already low gears so there is no need for anything more?
Most rock crawling is slow and technical, where deep gears are the champion and horsepower doesn't really matter.
Not all though, there are times where horsepower is what it takes.
beags86
Eastbound and Down
Most of ck5 is rock crawling. Some sand guys, some dessert guys, some mud guys, some guys that like big horsepower, and some guys just like to cruise. The dessert/mud/high horsepower guys would be the one to have a blower or supercharger. But they cost lot of cash and require lots of "snowball effect" type of modifications. Trans/axles/cooling/ etc,etc.
It can be a big undertaking. And for most types of wheeling you don't need it, axles/tires/gearing etc, is where to spend the big bucks.
Let’s be honest. Most of CK5 is cheap asses and paying $3-5k at once for a supercharger is more than what half the guys have into their rigs total.
If you want to build a rock crawler, engine horsepower is basically at the bottom of the list. Lockers, big tires, deep gearing, etc. are much more important for rock crawling.
Horsepower is awesome where you can use it, for sure. Little makes grown men giggle like children as does horsepower.
Horsepower is awesome where you can use it, for sure. Little makes grown men giggle like children as does horsepower.
Why I feel so at home. This might be the time to rebuild the axles and change the gears.
Then work on justifying a supercharger.
beags86
Eastbound and Down
Is forced induction legal in kommifornia?
It should be cleaner with forced induction. Already I have exceptional tailpipe emissions. A tuned engine that isn't burning oil should be clean -- NOx is caused by high temperature combustion -- which is more a downside of '80s emissions equipment. One thing nice about California is you get to know tailpipe emissions and what is clean. The tech is always amazed at my low emissions.
I will double check if I need to go through a referee station for approval. It is nbd, this truck went through the referee process with an earlier build.
I like my clean air as much as the next. I went to my hometown and was amazed at how beautiful the mountains were and how close they were. When I was a kid you couldn't see them the air was so bad.
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But are they legal to install? I left the state partly because of issues like this.
From what I recall a referee has broad discretion on what they approve. Their mandate seems to be to make sure the tailpipe emissions are better than whatever the factory emissions are. I could stick a four banger with a turbo in here that has super low emissions -- it will get passed and issued a referee badge.
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@ktmoutfront You can move back! They have a website for you now http://asktheref.org This was all more difficult back in the day but wasn't impossible to navigate.
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There are a few that are.
I missed all of this..lol. useless info... I have both............ modified ls 6.0'408 stroker with a magnuson 2300 supercharger, money involved in that is mre than the trucks worth. Its a fun ride but not a daily driver for no means. It was cheaper than a new truck tho plus i didn't want the payments for years. The propane truck was a big mistake, i daily drove it when they sold race gas cheap in town. the station closed a year later and it was too much to with 10.00 a gallon prices(12.5:1) so i did the propane. It runs good but to daily it would be a pain in the ass.
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Good thing I re-read your post before I became that guy, as the 48% increase in torque is probably more than you'll get from the supercharger.
So what compression ratio is the engine built to and what kind of pistons? If committed to carb (not CARB!) are you planning to run electronic timing control? Going EFI should give you additional throttle and packaging options to fit under stock hood if you're thinking about that. But I think a regular old-school Weiland is designed to fit with just a low-profile air cleaner or something like that.
Maybe set up some search assistants on eBay/CL/FB to notify you when certain keywords come up. Seems like these sort of things do come up once in while, but are often missing key parts like pulleys.
Good call on search, I already set one up on Craigslist; eBay is a good idea too.
Engine was built by Felix at APM in Morgan Hill. It has flattop pistons, a light deck, 0.040 over, and a composite head gasket. Felix estimated it was on the low side of 9:1. It was balanced. I stuck a snake cam in and there is still crosshatching everywhere.
Electronic timing control; I am guessing this is Mallory-type control on top of the current HEI?
2,000 RPM all day on the highway and 18 mpg is what has kept this K5 a daily driver for so long. It still has enough off-road ability to crawl through large washes. Honestly, it is a nice balance between niche use and everyday use.
My wife wants more stoplight tourqe so she can just dump the clutch. More or less. I already messed with the timing for all I could -- and found a lot of bottom end.
9:1 is supercharger material..lol. an old school blower would be nice for that. Nothing fancy 5-6lbs would add that lil extra you need. A buddy had one when we use to wheel every weekend, it was on a long bed with a 350. It ran really good with that low boost. I doubt it will make boost until I'd imagine 2k rpms.
This is key. I don't usually get to 2,000 RPM. Anything over that and people on bikes start looking over to see what is coming (just flowmasters, it seems quiet).
What changes when boost comes in? I can reasearch, but what is a lower RPM of boost with different types of supercharger? Turbo usually is higher which is why I am asking about supercharger.
