Is the stock HP on a 91 350 @ 210?? What is the torque rating on those motors?
91 suburban 350 TBI 3/4 ton yadda yadda yadda???
91 suburban 350 TBI 3/4 ton yadda yadda yadda???
CK5
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Horse power??
- Thread starter cuervo
- Start date
Come on, someone has to know!!! 
In my Chiltons it only covers up to 1990 but the HP for the suburban varies depending on R-V 1500 = 210 @ 4000 rpm or R-V 2500 = 195 @ 4000 rpm but the torque for both is 300 @ 2800 rpm
ug, so 195 hp on 5.7 TBI? That's terrible on a few different scales!
In a truck or wheeling rig you should not even be concerned with HP, it is torque that gets you moving and is what's needed for low end crawling and such. HP is a big concern for the race car guys. Just remember, torque gets you going and HP keeps you going (on the top end).
Fabrimacator21
1/2 ton status
Depends on the wheeling you do.... hillclimbs and mud hp is important. Crawling trails, and rocks tq is important.
The stock 350 is ok for mild trail running but it was painfully obvious how underpowered it was when towing or even running up hills with no trailer on the freeway. I needed to regear but still it was pretty bad.
Well, this is more a towing application so I do need some good low end torque as well.
For towing you need torque and should not worry about HP at all.
BILTIT
1/2 ton status
If you want torque, put pontiac power in it!
While I agree with your comment, Pontiac motors are expensive to build right. This is mainly due to the limited market of the parts leads to higer prices (look at aluminum heads - only a couple of companies that make them). Dollar for Dollar I think you can do better with the SBC or a BBC if you really want the torque. I have been planning a build for my '67 GTO resto for a while now and see probably a 30% - 40% premium for the Pontiac motor build.
For the Sub go with a good 383. You will have good torque and avoid the hassels of swaping in a BBC (smog, accesories etc.)
BILTIT
1/2 ton status
Pontiacs are much cheaper than they used to be. The aftermarket has really stepped up in the last 5 years.
The biggest hassle is the mounting and hookup of a pontiac engine in a none pontiac engine bay.
However, they do bolt up very easily and many people have done it.
Here is some of the latest in advancement of pontiac cylinder heads.
Just say ''Canted valve pontiac''
http://www.rolandracing.com/
The biggest hassle is the mounting and hookup of a pontiac engine in a none pontiac engine bay.
However, they do bolt up very easily and many people have done it.
Here is some of the latest in advancement of pontiac cylinder heads.
Just say ''Canted valve pontiac''
http://www.rolandracing.com/
Yeah, but I don't want to build a 383 and get a new chip and 454 injectors. I want as much TQ as I can get from an off the shelf 350 as I can. I've seen some 345 TQ numbers on some vortec motors with just headers and performer manifold. I doubt that my old motor is putting out the 300 that it books at.
Short of doing something like this http://www.sdparts.com/product/1780...teEngineReplacmentfor19961999LightTrucks.aspx I don't see myself trying to build and clearanec a block for 383. Those days are long gone.
Fabrimacator21
1/2 ton status
http://coloradok5.com/forums/showthread.php?t=252178
Once I looked at the power and price of the 6.0l's theres really no reason to go gen II again IMO. 6 bolt mains, individual coils, sequential fuel injection, aluminum heads, and awesome tq and hp.
Those motors make crazy tq off idle... 300+ ft lbs at 1000 rpm and 350 hp, 380 ft lbs peak. (lq9). They've been dynoed higher then that stock in a few magazines. You can get one running turnkey with under 50k miles for under 3k.
Once I looked at the power and price of the 6.0l's theres really no reason to go gen II again IMO. 6 bolt mains, individual coils, sequential fuel injection, aluminum heads, and awesome tq and hp.
Those motors make crazy tq off idle... 300+ ft lbs at 1000 rpm and 350 hp, 380 ft lbs peak. (lq9). They've been dynoed higher then that stock in a few magazines. You can get one running turnkey with under 50k miles for under 3k.
jonathon
1/2 ton status
My burb got around fine on the 265/75r16's with 3.73's
I've got 315/70s and 4:56 and when towing my boat it's a pig. In 4low in the woods it's fine. On the hwy the .75 OD is a win for sure.
Fabrimacator21
1/2 ton status
What gears are you running?
The same ones from my last post,
4:56
Has anyone ever opened up an 18 year old cat to see how clogged it was?
Likewise, I search Edelbrock's site for the Vortec/TBI Perfomer manifold and could not find it. Is the GM TBI/Vortec the only choice here?
http://www.jegs.com/i/GM+Performance/809/12496821/10002/-1
Also, someone on here had the TBI honed out for a 383 build by some Marine fabricator. Anyone remember who that was?
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