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Old 03-12-2012, 09:26 PM   #1
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What SBC 350 should I look for?

Im thinking about a SBC Carberated.. What vehicles Should i look for in the junk yards? I want a 350 tranny. Is there any carb that can handle Off camber slopes??

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Old 03-12-2012, 09:28 PM   #2
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I can't help on the vehicles but would say a van or work truck might be a chance. The junkyards are starting to get picked more and more of their v8's.

As far as carb's the Truck Avenger is probably gonna be your best bet. Out the box for sure. I have one on my cj and it does really good. No complaints.

My question though is why would you go from a 4.0 fi to a 350 carb?

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Old 03-12-2012, 09:35 PM   #3
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Im just wanting some more power i guess.. And the v8 sound of course! And im not very mechanically inclined so fuel injection scares me And im guessing Carb is cheaper. Im only 20 So I dont have unlimited $
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Old 03-12-2012, 09:42 PM   #4
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Well V8's are cool but personally I would regear your axles and do a 8.8 swap in the rear. By the time its over with it would be cheaper than a V8 swap but Im sure people will argue me on that.

Good luck either way.
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Old 03-12-2012, 09:50 PM   #5
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They made something like 90 million 350s. Starting from 1967, there are 3 or 4 generations of the motor. A car or truck ranging from 1968 to 1976 will probably yeild you a Gen 1 350.

They made 350s until 2003.

What you might do is browse a Oil Filter cataloge and see how many makes and years have 5.7L listed.

Oh and if you got the Deep Pockets
http://www.enginefactory.com/chevypro.htm
This place is highly recomended. This is a truely turn key engine, mount it, hook up the Starter, Fuel, Alternator and turn it over.
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Old 03-12-2012, 10:03 PM   #6
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No deep pockets here! And thanks for the info on SBC's I was just kinda wondering what SBC was a good fit for my wrangler. like what Vehicle I should pick out in the scrap yard and look under.
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Old 03-12-2012, 10:06 PM   #7
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There all basically the same engine. If your not looking to spend a lot on making it work.

Avoid any fuel injection model.
Look for a gen1 1968 to 76.
If your lucky find a 1970 corvette or z28 camaro 350. I think they where rated at 425hp.
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Old 03-12-2012, 10:47 PM   #8
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So Carb engines flood out at a certain degree.. This kinda sucks! how much is a good Carb that wont flood on me When im climbing? Is it worth the extra cash to buy a EFI?
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Old 03-12-2012, 10:53 PM   #9
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Holley Performance Truck Avenger Products

I have read some good reviews on these for offroading. They run 350ish to just under 500.

I've have heard of them flooding but I personally have never seen or had it happen to me.
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Old 03-12-2012, 11:07 PM   #10
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Heres one I found.. Let me know what You think!

83 CHEVY TRUCK MOTOR(4 BOLT MAINS). COMPLETE CARB TO PAN WITH STARTER AND ALL THE ACCESSORIES. HAS 78,000 MILES.HAVE ON A MOTOR STAND AND I CAN RUN IT FORYOU TO LISTEN TO. I AM ASKING $325 O.B.O. .CASH ONLY,NO CHECKS. TRADES POSSIBLE?????
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Old 03-12-2012, 11:11 PM   #11
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Sounds like it could be a winner. Specially the fact he can start it for you. Always ask why they are selling it.
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Old 03-12-2012, 11:33 PM   #12
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I just txted Him. I would want a Turbo 350 tranny cuz I hear there pretty short. I want to keep my Np231 im thinking.. As long as it will stand up to the power of a 350??
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Old 03-12-2012, 11:47 PM   #13
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Ive been using the TH350, np231 against my 350 for 7 years. It seems to be holding up well.
Advanced Adapters makes an NP231 to T350 adapter.

Speaking of transmissions, make sure and get the proper torque converter. I didn't and im paying for it now.
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Old 03-12-2012, 11:52 PM   #14
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How do I tell the proper one? Do I want a TH350c? Or the standard?
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Old 03-12-2012, 11:57 PM   #15
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Call the manufacture of the brand you want.
They take a lot of factors into account when deciding what is proper for your vehicle
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Old 03-13-2012, 12:02 AM   #16
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This is prolly a dumb question.. What happens when you get the wrong converter? Rpm's all over the place?
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Old 03-13-2012, 05:53 PM   #17
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Quote:
Originally Posted by yjJEEPyj View Post
This is prolly a dumb question.. What happens when you get the wrong converter? Rpm's all over the place?

Its actually a good question, and one I should have asked myself when I did my swap.

Its not the easiest thing to explain but ill do my best.

Your Torque Converter has a "Stall Speed", Stall Speed is the engine RPM level at which the Torque Converter "locks" and overcomes whatever resistance is present to turn the wheels. [Weight of vehicle, brakes being on, ect.]

Ok so your Stall Speed should be at the RPM at which the engine has its peak torque.

-So, what can happen is (and happened to me) becuase the Torque converter in that Chevy is dialed in around the Wieght of the truck, once installed in your much lighter Jeep it will lower the Torque converters stall speed. Becuase the Jeep wieghs less, there is less resistance to overcome to gain lock up.

Since your not at your peak torque your wasting potential power by 'locking' in to early. All that wasted power turns into heat, and heat will basically destroy your torque converter, and transmission, not to mention cuase transmission slippage.

How I found this out:
I didn't know any of this when I did my swap and just bought one off the shelf that fits a TH350. Well with a light Jeep coupled with my beefed up 350 my stall speed was way way to low. For one I really have to press the brakes hard at a stop, (I've actually taken to shifting into neutral at stop lights, yeah that bad). The other effect is slippage at higher rpms. So basically after just maybe 20k miles my tranny is shot.

Hopefully all this didn't fry your brain!

Here is a exert from an article about what info you need when calling to find out what TC you need.
Be honest with yourself and decide how you want to use the car. Most of our own cars are 80 percent street driven, and 20 percent track abused. Given this information, the converter tech guy would suggest a converter that retains good street manners. If you tell the tech guy your street machine is “100 percent race car,” but you’re really intending to drive the thing on the highway, you’re only setting yourself up for disappointment.






After you’ve declared your intent for the car, you also need to tell the tech guy the weight of your vehicle, and the following information about your powertrain combo:
  1. • Displacement
  2. • Compression ratio
  3. • Cam profile (duration at 0.050-inch lift, lobe separation angle)
  4. • Carburetor or injector size
  5. • Transmission model year and gear ratios
  6. • Rearend gear ratio
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Old 03-13-2012, 09:35 PM   #18
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Quote:
Originally Posted by Master4th View Post
Holley Performance Truck Avenger Products

I have read some good reviews on these for offroading. They run 350ish to just under 500.

I've have heard of them flooding but I personally have never seen or had it happen to me.

Ive got several hours in tune time but mine does really well. I have a built 304 with a decent cam and can idle up and down hills at 800-1000 rpm with no issues. Now stopping and letting it sit wasn't as friendly but thats not the carbs fault. Just had to clear it out some.

A engine with a stock or rv style cam should do really well with it if you spend the time a carb needs. I think carb's are something people tend to not spend the needed time on.
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Old 03-13-2012, 09:54 PM   #19
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well v8's are cool but personally i would regear your axles and do a 8.8 swap in the rear. By the time its over with it would be cheaper than a v8 swap but im sure people will argue me on that.

Good luck either way.
x2
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Old 03-13-2012, 10:10 PM   #20
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I am doing 4.10's and I have a 8.8 4.10 LDS sitting in my shop ready to put in. Just am waiting on a few more parts.
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Old 03-13-2012, 10:14 PM   #21
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Im going to pick up a 350 tomorrow bone stock. form a 83 truck. Complete
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Old 03-14-2012, 05:39 AM   #22
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Im going to pick up a 350 tomorrow bone stock. form a 83 truck. Complete
Good luck, that sounds like a fun project. You can get some cheap HP out of the Chevy 350 without doing a lot of work.
In Nov. I traded my K-5 with 350+ HP for my anemic YJ and I miss the power sometimes. It was a stock 350 and I add a cam, some custom heads, headers, and Edelbrock intake and carb. I can't remember exactly what carb it was, (I can find out if you need me to) but I think it was 600cfm, and it never stalled on any hill I climbed. That is why I bought it. I had a Holley to begin with, but it would stall on steep hills. I also got better gas mileage with the Edlebrock after I got it dailed in right.
With 4.10's you will have a powerful beast for sure.
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Old 03-14-2012, 08:49 AM   #23
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350 HP sounds nice to me

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