Inliners International Forums General Discussion Engines turbo charging a 250

Greg: I just asked at the other forum what it was...and it is a ford..its just one that i havent seen before since i havent seen a ford (other than a 300 which is much bigger) with the intake on the drivers side...but this is what he said to me... so it is something different that i havent actually seen before, so i learned something new.
I also recieved some pictures of Old Newbys brothers blow thru turbo setup, so now there really is pictures of a chevy setup, lol.



i was having a bit of trouble resizing this time so i hope it works out good, i am pretty sure they are all small enough, just hoping they arent too small

Me too. If only Chevrolet built a new 292

Well there is the new 4200 inline 6. Comes with quite a bit of technology and such, variable exhaust timing I think? I'd have to check. I wanna check one of those out eventually but for now I have my 250.

I'm considering putting a turbo on a 292 for my 59 chevy. Not sure about induction, would like injection (from TWM), but out of my price range. Blow thru set up will be more likely. Any recommendations on a Cam? Also Exhaust Manifold mods would be helpful. I'll be using a New Proccess A833 manual 4 speed overdrive. I'm also reading thru the Hughes book and ordering the Corky Bell Book.
Thanks.

You've started in the right place by going through both of those books, they're both very much worth your time. Some people simply use the stock exhaust manifold with the necessary attached tubing as a turbo manifold. It won't flow as well as if you built a tubular exhaust or something but you have to weight the advantage against how big (and possibly expensive) that job could be to make/have fabricated an exhaust.

it probably won't. but what is to say that that matters. the teflon coating on the rotors of my lightning is flaking off too, and that has just air running through it. i don't think losing the coating would be too much of a problem.

Hey all,

I'm new to the board, and I had a few questions regarding turbocharging. I am planning on getting a 250 from a guy I know with 44,000 orginal miles. My plan is this: I want to put this motor into my truck for towing. The 250 has more low end then my 350 does in it right now. I also want to turbo it to add some umph to the pulling power. Should I get a 4bbl intake, or try to use the 1bbl? Doesn't the carb have to be modified to see boost? Can you do that to a single bbl carb? I'm going to be using a smaller turbo for quick spool. Its a t3/t4 57 trim .63 turbo off ebay. I need to know weak point, and do's and don't's, because I am on a budget. Thanks for the help guys

Lee

Well, my first question (in return) is how do you figure the 350 has less low end than the 250 does? Low end is very significantly affected by displacement and the 350 has 40% more of that. A near stock 250 will almost certainly have less low end than a near stock 350. But you did say "right now" perhaps in reference to the 350 being in poor shape maybe? Not sure, but head to head normally a 350 has more bottom end. I just want you to know what you're getting in to.

If you do go turbo 250, I would recommend the 4 bbl. Overall a 4 bbl would be better for performance and I think offer more options for tuning. But I'm not a carb guy, so you'll want to back this up.

Well, my 350 has seen alot of drag racing in its day, and it has a racing cam in it, and low performace heads. I ran the truck at the track once and it ran a best of 16.1 at 87 mph (In my chevelle with good heads it ran 14.1 @ 94). I am guessing it only makes 200lbs at probably round 2600rpm. ONLY a guess though. Its not that great at towing. Burns more oil than fuel(but it burns alot of that too:) I figured if I turbo a 250 with a smaller turbo, I could get some decent power at low end. I'm not looking for a screamer, I need a puller.
I'm kinda in "cheap mode" with the truck, so I think I'm goin 2bbl, like a Holley 390 or something. Problem still in finding someone who can build it to see boost though...

Personally I would leave the and rebuild the 350 for towing or if you set on using a 6 I would go for the 292 which produced more torque. If you are really set on doing a turbo project there are a few people on here who have done them or are in the process and you should be able to look around and find some of their bulletins. I personally haven't got around to mine because of the normal budget reasons.

Yeah a 292 is better, but I have availible to me a 250 with 44,000 miles for $200. Like I said I have small pockets, and most of the money has to go to other projects ('87 Shelby CSX, '69 Chevelle). So the cheaper the better. Not that i am going to skimp on the imortant stuff, I'm just seeing how far I can go on a budget.
I was going to rebuild the 350, ut its harder to mount a turbo on that then an inline. I own one other turbo car and I love it(except its front wheel drive). I defintaly want to do something different.
Thanks