I am just looking into how to add a good amount of power and do something unique to my six banger. So can i put a 142 blower w/ a predator 6000 carb on a stock 235?? or will it grenade?
you really should start reading up and educating yourself. not trying to be mean but your posts screams of "I dont know my ass from a hole in the ground". you can boost stock engines if you tune correctly and keep boost low. so yes, it can be done, but if I was spending that kind of coin, I'd want to do it right and get the full benefits. Thats where the reading comes in.
You're asking a question that needs more info-like, is your 235 a powerglide engine, or standard shift (it'll make a big difference)?
As well as if it is a fresh engine or wore slap out. A 235 is just an engine. Can one be supercharged? of course it can it is just an engine. Will one handle 14 psi in stock trim probably not but most any low compression engine will hand 3-5 psi in stock trim. But it has to be an engine that is not already wheezing from being well worn and there is more too it than slapping a blow on and running.
If you pick up this book, it's a really interesting read on what was being done to those chevy sixes when they were new. Modified heads, oil system, Supercharged, Fuel Injected. Here's the link below http://www.barnesandnoble.com/w/how...-cylinder-engines-roger-huntington/1111259914
The 235 is out of a hay sweep its not fresh but had a rebuild done and then only used 2 years since rebuild sat for 2 years then i bought it. it is in front of a sm420 four speed and is in stock trim going in a 58 apache motor was bought last year and is going in now
And my questions on this seem uneducated because for one am only a high school kid and although i have grown up around this stuff i know mostly about sbc not so much old inlines and i dont know what they can take stock unlike a more modern small block.
I put a supercharger on my 261 (see my avatar), which is basically a 235 with a bit more displacement. Used a blower from a Detroit 8V53. But, I built the motor with boost in mind, so it is far from stock. Only the block, crank and the iron in the head resemble stock...everything else was either replaced with appropriate parts, such as forged pistons, better rods, etc., or massaged to match the demand. As Beaner said, you can supercharge any engine, but a stock 235 won't handle more the 3-4 lbs of boost for long and it would need to be fresh. Also there are better carb choices than a Predator.
You'll learn. If you want to boost it make sure that you have a good lower end and keep your boost numbers low. You are going to use the basically the same rules as any boosted engine.
I dig the concept... if it's designed and executed right and the limitation understood. One of the early questions should be: Is it a full oil pressure 235 or an older dipper/splasher?
It's no sin to not know something so don't be afraid to ask. Like P&B said, you'll learn. No one was born knowing this stuff. I still learn something on the HAMB almost everyday and I've been messing with cars for almost 40 years. I think it's cool just to see someone from your generation even interested. You've got to carry the torch, man.
Idk it holds 40 psi oil pressure and from what ive come up with but not entirely for sure is that the motor is passenger car 235 from 1958
It seems like I remember hearing that most truck motors had solid lifters and most passenger car motors had hydraulic lifters. I'm sure someone will be along soon to either support or dispute that statement.
Now to check for hyd. lifters if you push down on the pushrod side of the rocker arm lightly they will have some spring to them correct?
If you need more HP get a V8. It will be easier, cheaper, last longer, and make more HP. The stock 235 was what, 120HP? A small supercharger or turbo might get that up to 150 or 175 without grenading the engine. A 350 will get you double that.
I understand and applaud your desire to go faster. We (well most of us have that) urge as well. But for somebody of your age and experience it would be alot easier and less troublesome to drive and enjoy the 235 for what it is as it is. They can handle alot of up-grades but the cost will outweight the rewards and the down time from breaking stuff is really going to put a damper on your fun. The good news is your truck will easily take a small or big block Chevy as a transplant when funds and/or time allow. That will be an easy horsepower addition to your truck and building any reliable blower motor is expensive, I don't care what it is. Sure you can half ass one and pressurize a stock engine, but too much and they don't last so long. And really is 3 lbs of boost that much fun when you can run 7-10 and really feel it? 10+ and hang on for sure. On the other hand a Jimmy six in mildly hopped up form is about as cool as a guy can get. In farm country I bet you can find one in an old dump truck or smaller bob-tail/cab over farm truck. And one of those is almost a direct bolt in. Keep going on the Hot Rod aspects of life, soon enough you'll be ruined like the rest of us and sit here typing on this box when you should be in the garage or doing real work. But one thing is for sure it's an itch that'll never go away and lead to some pretty cool stuff, experiences, and people. Keep asking questions and never be afraid to feel dumb, because remember that the guy answering wasn't born knowing anything either. Go Kid Go! Tim
The same could be said for the flathead v8s, but you don't see the flathead guys all going to sbc's. I like seeing something different. If he wants to learn how to get more power using something out of the norm, why discourage?
Hey. I supercharged a 270 GMC (Turbocharged actually) and it went 202. Don't write sixes off so fast.
Well they did in the '50s. There is nothing different about a 235, maybe a huffed 235 is a little different but how many people on here call themselves "hot rodders" and leave the original mill in their car then bolt gizmos on them and expect the rest of us to think they are hot rodders. Terpu gave good advice, don't expect a 235 to cause your panties to get wet when you stab the throttle. Maybe like Rich says get a better inline 6 and build it, but I think this is one of those times that a been there and done that older fella should make the point that no matter what you do to the 235 at te end of the day it is still just a 235, and a built 235 is not going to be dependable. This is not to say that i don't have a healthy repect for a 235 in stock trim, if you need to go from point A to point B and you treat it like what it is it will get you from point A to point B on a dailey basis and do it well. It is not going to be an exciting trip, unless a tecxting teenager in mom's lexus crosses the double line in front of you, but it will get you there and back.
You can fit a sc14 on to it , there's an Australian speed shop that markets the kit. I don't have time to find a link for you. Now if you want a sc14 or two PM me.
I'm sure you can do it. Unless your trying to build a drag racer. I beleive that most of the blown hot rods that are super charged are actually under driven for street driving. At Lions drag striply on a lot of the top fuelers were junkyard engines with blower and nitro added, they didn't last long but they didn't need to.I'm guessing your after an open hood at a showdeal, and as long as it's mild, it will be fine.Remember compressed equals heat, and less durability.
Stick with the blown 235. 90% of people take the easy road out and just put a small block chevy in the hot rod because they are easy. I have a buddy that has a 37 chevy truck with a 261, mild cam, 3 strombergs and a mcculloch blower making 3-4 pounds of boost the truck is alot quicker than we thought and there is more in it. It has no problem burning the tires thru 2 gears dont under estimate a 6 cylinder with a little boost might be surprised how fast it may be. if you need any help with your build i will be more than happy to help i like seeing different stuff yea u wont be the only blown 6 out there but they are few and far between and do draw some attention.
I'm not against a blown six cylinder in fact I like them. I just don't want the questioner to overmatch himself on his first build. In terms of easy and low cost, a stock or near stock 235 would be great. If he wants some decent power a 350 or 305 will bolt in and not break the bank. If he could find a 292 six out of a Chev truck it would be better than a 235 and practically the same HP as a 305. They can make decent power with a mild hop up, and are a tougher engine if he wants to supercharge it.
hey im on the look for a jimmie and i might know of a couple of early 50s gmc 1/2 tons wat size of 6 did they have?
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