SBC intakes

whitneyj

whitneyj

Well-Known Member
Joined
Apr 30, 2008
Location
Mayville, WI
Alright, I'm not real spun up on chevy's, I'm a Jeep guy, but I bought an 89 K5 to pull my XJ around. So, it's got a 350 with the fuel injection, so what's the difference in the SBC intakes? Can I just use any gen 1 intake and use an adapter if I need for the throttle body? Or is the bolt pattern different? Ports for different vacuum lines? I'm looking at wasking up it up a bit and the intake is the next on my list.
 
on a tbi 350, an intake change is gonna net you zero unless you have made extensive other changes...its so far down the list I wouldnt even have it on the list of useful mods IMHO

*Unless you are going to a larger CFM TB, better squirters, and reprogramming


Also not to be an ass, but thats not a great choice for towing an XJ either....
 
You bought a mid sized suv to tow a mid sized suv?

If you hell bent on using the K5 to tow with then I would think along these lines first
Brake box
upgrade the brakes on the blazer
weight distribution hitch
air bags or helper springs
then last but not least.........A Cummins
 
1stgenxxx said:
You bought a mid sized suv to tow a mid sized suv?
If you hell bent on using the K5 to tow with then I would think along these lines first
Brake box
upgrade the brakes on the blazer
weight distribution hitch
air bags or helper springs
then last but not least.........A Cummins
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A K5 is a FULL SIZE, 2 door SUV.

intake for TBI sbc... http://www.summitracing.com/parts/EDL-3704/
 
wheelbase is wayyyyyy too short to tow safely with. when that trailer starts moving around on you, you will find Jesus quick!
 
Holy crap, can anybody just answer the man Q's . I have done worse and I am sure most have.....SkiH5 pointed it out and I am sure he will take that into consideration but we all start somewhere .
 
Alright. . . I'm going to be flat towing my XJ until I can afford a trailer. So if I can't afford a trailer, obviously I can't afford the 1 ton duramax I have my eye on, hence me getting the K5 for a smoking deal. So drop me getting another tow rig, I had another thread about this already and in no way, shape or form was that any sort of answer to my question. I've been playing with SBC's for quite a while now, I'm not saying I know everything, but I have a fairly decent handle on things. Yes there will be other changes to the motor, but it's NEXT on my list as it's the cheapest and easiest to install right now. The FULL size blazer will be sporting a 60/14 in the near future, so the bigger brakes, weight capacity and all that fun stuff will be addressed. I'm not trying to be a dick about anything, but I'm just asking a fairly simple question, while I appreciate all the concerns and comments, I'd just like this to stick to the original question. I know I can buy a brand new intake through summit, checked that already, but I can also get used intakes for considerably less. That's why I'm asking. Again, thanks for the comments and concerns, I suppose it's better that people beat the dead horse of safety vs. ignoring it all together.
 
just out of curiosity and not to bash in anyway, (sorry for the thread jack) what is the purpose, anticipated benefit to flat towing?
 
I don't have a buy a trailer is really the only reason I can see that it's beneficial. Otherwise I think flat towing is a horrible idea for several reasons: you don't have the benefit of any sort of braking assist like you would a trailer, tire wear, axle wear, if you blow up an axle, or get a flat and don't have a spare you can't just pull it on a trailer and go home. I'm sure there's more bad reasons, but that's how I see it.
 
the guy from TBIchips.com lives right near greensboro (south of it) if you get into it a decent amount you can just take your rig over to him and he can custom burn you a chip for pretty cheap.



But yea, as far as the intake goes on mine I got a standard 4bbl carb intake and bought one of those 4bbl to tbi adapter plates from jegs, no probs.

Do the intake manifold, cold air intake, bored out throttle body, good shorty headers and free flow exhaust, injector spacers, up the pressure on the fuel spring in the TBI, and have Brian at tbichips.com burn you a custom chip and she'll wake up a decent amount :smokin:

**especially if you can afford to cam it while you have it apart, he's got some good TBI friendly cam references on his website**
 
central09er said:
if a lincoln town car can pull a bass boat a k5 can pull a jeep. it might not be the best choice but... how much of a difference is a k5 and a k10?
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A lincoln town car can pull anything... In my book. And they tow best with the moon roof back, so your hair can blow.
 
whitneyj said:
I don't have a buy a trailer is really the only reason I can see that it's beneficial. Otherwise I think flat towing is a horrible idea for several reasons: you don't have the benefit of any sort of braking assist like you would a trailer, tire wear, axle wear, if you blow up an axle, or get a flat and don't have a spare you can't just pull it on a trailer and go home. I'm sure there's more bad reasons, but that's how I see it.
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Again sorry for the hijack.

I just am always confused when this comes up.
I guess I am just really dense...
I just cant see why you would flat tow a trail rig instead of just drive it, unless you just cant get it street legal. But even then it would be cheaper to make it street legal than flat tow it around I think.

The only break you could flat tow home safely that you couldnt drive home would be a fatal engine failure, and those are pretty low on the occurence list.

I cant imagine any way the tow vehicle gets better mopg dragging a rig than the rig could get propelling itself, etc.
 
SkyHiK5 said:
Again sorry for the hijack.
I just am always confused when this comes up.
I guess I am just really dense...
I just cant see why you would flat tow a trail rig instead of just drive it, unless you just cant get it street legal. But even then it would be cheaper to make it street legal than flat tow it around I think.
The only break you could flat tow home safely that you couldnt drive home would be a fatal engine failure, and those are pretty low on the occurence list.
I cant imagine any way the tow vehicle gets better mopg dragging a rig than the rig could get propelling itself, etc.
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It's hard to argue any of your points, but there are a couple reasons.
1. Yes, my XJ won't be road legal until I address a couple issues. Granted they're cheap issues, but a pain in the neck to do, so they get put to the bottom of the long list.

2. I can lose any axleshaft, DS, or any powertrain item for that matter and still be able to tow it home-full floating axles.

3. My XJ will more than likely get worse gas mileage than the Blazer towing it. My XJ-when finished-will be rolling with tons and starting with 38's.

4. This one is arguably hypocritical-safety. I feel that flat towing my XJ-which falls into the rated towing capacity of my K5-is safer than driving a heavily modified vehicle on the road. The K5 was designed to be road friendly. While I plan on building some road manners into my 3 and 4 link suspension, it won't be my main focus.

5. My XJ hardly has any room in it for a full weekend of wheeling. My Blazer on the other hand has ample room for me to lay out and sleep if the weather turns foal, tents, coolers, family and/or friends.

6. The XJ with it's prior setup was not fun to drive on a hot day with no A/C and was incredibly loud. K5- not so much. I'm actually surprised by how quiet the cab is with just a fiberglass cap for the rear covering.

I think I've rambled enough. Like I said, it's hard to argue your points in a general sense, but everyone's situation can constitute different reasoning's as to why they did what. But overall I agree with you.
 
Flat towing an Xj? You will be fine, give your self plenty of room. Make sure you tow rig brakes are in good shape & stay away from long down hill grades.
 
Jeff B said:
Flat towing an Xj? You will be fine, give your self plenty of room. Make sure you tow rig brakes are in good shape & stay away from long down hill grades.
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Appreciate the advice. I'm usually a pretty cautious driver, been in and seen some pretty horrific crashes and have no intentions on being involved in those again. The Blazer will be upgraded to a D60 front and either a 14, D70/80, or a comparable 1 ton axle for the rear. Provided I have the funds, I'd like to do a full rebuild of the 700R4 tranny with some pretty solid upgrades and a manual valve body, so it can help with some stopping if need be.
 
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