differences in intakes?

[dinnut]

i have a long water pump setup on my 350 in my truck. i noticed when replacing the water pump that i have no bolt for the back right part of the alternator bracket to bolt to on my intake

this pic is stolen from big ski ohios post... showing the bolt in back right on the intake and i will attach a pic of my intake...



are there different intakes available? or was my intake originally for a short water pump or something like that....

[1972C10]

Yeah thats an old intake.

The bracket you need was hard to find untill recently.

You need one like i am running I have the same old NON EGR intake on my 85 you need the alternator bracket that goes to the thermostat housing .
My local vatozone sells chrome brackets like this. Stock ones are pretty hard to find At least i havent seen many.
If you need a visual let me know ill snap a pic of what mine looks like installed.

[Randy70C-10]

The intakes are the same, long or short water pump doesn't matter.

[72C203503ONTHETREE]

The intakes are different in that the bolt hole for the alt. bracket isnt there. I have seen the two different brackets, but I beleive both were used on the long water pumps. The Corvette might have used the longer one since they used a short water pump into the late 70's.

[dinnut]

Originally Posted by 1972C10

Yeah thats an old intake.

The bracket you need was hard to find untill recently.

You need one like i am running I have the same old NON EGR intake on my 85 you need the alternator bracket that goes to the thermostat housing .
My local vatozone sells chrome brackets like this. Stock ones are pretty hard to find At least i havent seen many.
If you need a visual let me know ill snap a pic of what mine looks like installed.

could you take a pic? ive seen the chrome brackets at autozone but i didnt know that i would have an advantage by buying one of those...

[1972C10]

Its not letting me upload it Ill post it in a sec i guess ill have to host it myself.



Ohh and BTW its not the chrome that helps what i was tryin to say is finding a stock bracket might be hard the one in the pic is the only one i have i bet i have 15 of the other kind and thats the only one that goes to the t stat housing i have or have seen

Im sure there are more floating around but i know autozone sells the chromed ones in both styles for LWP

I prefer these old intakes without the holes for heat stove and EGR and they didnt have that tapped hole for the alt bracket.

Hope this helps/.

[1972C10]

[454_72_4X4]

Myself, I usually trim that part of the bracket off anyway. It'll be fine without it.
I just use a hacksaw and cut them from the lower mounting bolt in a reasonably straight line up to an almost point at the upper end. (Hard to explain).
The bracket you have on there wouldn't be very good for cutting though because of that big oval shaped hole in it. You'd be cutting right through it and then the bracket would be kinda weak.
My S-10 is this waym (along with about every other vehicle I've ever owned), and it see's 6000 rpm fairly frequently and a few times upwards of 7000 and I've never thrown a belt.
Another thing I do is run the power steering belt around the water pump also.
Two advantages for this;
1. It puts "pull" from both sides so the waterpump bearing will live longer, (in theory anyway!), and
2. If you should happen to break a belt you'll still be able to drive it. You can drive it without the alternator or powersteering but not without the waterpump!

[OhioDan]

I used a bracket like this. Picked it up at the local speed shop. Then ya won't need the hole?

[Bowtie67]

I'm not going to say anything about the bracket, I think that has been covered, but on the first pick of big Ski's pick the PCV does not plug into where it is, this hole was an emisions hole for a carbon canister. The PCV usually on a Quadrajet carb usually came out the back of the Carb or the back of the intake to the right side Valve cover and instead of running loops from one prot to another he should put caps on those vacuum ports. I also think the Vacuum advance should be going to the left side of the carb and not the right side.

[454_72_4X4]

OhioDan's bracket is like I cut my stock one. As a matter of fact a bracket like that is where I got the idea to cut the stock piece.

Bowtie67, I think I agree on both counts.

[72C203503ONTHETREE]

March has brackets to fix any of those problems, but they arent cheap. I had trouble with alternator belts flying of the 327 in my El Camino. I got a kit from March that included cool polished/clear coated brackets and pulleys designed for a 6 rib serpentine belts. Found out later that the thrust bearing was way beyond shot and was causing the crank pulley to move too much and make the belt fly off or be destroyed. The March brackets dont use any bolts on the intake, just the holes in the head and water pump, and no bolts used on the exhaust manifold.

[jimfulco]

The late '60s & early '70s Chevy cars w/long pump had the back hole of the alternator bracket on the water outlet stud. Sometime in the mid-'70s, they changed it to the shorter bracket that needed the separate hole toward the front of the intake.