Chetgzs

Sorry if this has been covered but vie been searching for an hour now all over. I'm going to be ordering a weber 32/36 with adapters and I'm wondering if I can use the intake out of my 85 fuel injected parts truck or if I will to buy a new manifold thanks

xxxtreme22r

your trying to put a weber on a fuel injected truck?

ok I am gonna make a few assumptions here. Looking at some of your previous posts you were asking about putting the efi system from you 85 onto your 82 that has a rebuilt 20r/22r hybrid motor on it. You already received an accurate reply stating the efi intake will not bolt up to the 20r head. Mainly due to the port shapes. the 20r port shapes are round where the 22r's are square. What makes you think now the efi intake will work on the hybrid motor? As well as a carb on any efi intake?

With that aside, I am going to assume you are wanting the weber for the 82 and the hybrid motor. If the hybrid motor did not come with the intake manifold your gonna have to find a 20r not 22r intake. Which will most likely be almost impossible. Your best bet is to buy an Offenhauser intake manifold. Several factors here is the performance gain and another would be the fact you will not need the base plate adapter with the carb, eliminating some of the vacuum leak possibilities the adapters bring into the mix when converting to them.

Summit racing has the cheapest ones out there, but only have the single plane(port) intakes. Apparently there are two versions one for 78-79 and one for 80. Whether or not this matters I have no idea. Only difference seems to be the way the water temp sending unit is attached. 78-79 had it pointed towards the grill and the 80 had it pointed towards the hood.

You also have a dual plane (port) option as well. The difference between the single plane and dual plane is the single plane is meant more for mid to upper rpm range and the dual plane is more of off-idle to mid range. IIRC the weber 32/36 will most likely like the single plane more and the weber 38 will like the dual plane intake more. Here is the kicker though, Offenhauser only lists the weber 32/36 as a flange option. IIRC the weber 32/36 and the 38 bases are the same, but you might want to look into that more. Another possibility the weber 38 might not work is maybe a clearance issue with the sync's on the carb. But that's just speculation as I have never looked that far into it yet.

Now as far as what's the best carb to run on the hybrid, I cannot say for sure, I would be more inclined to say a weber 38 with the dual plane manifold. But that's only my opinion and not personal experience.

Here is your part number reference for the offy intakes that are available. For your application you will be looking at the 1900/2000/2200cc section not the 2400cc section.

abeD85flatbed

The 32/36 is the appropriate carb. for a 20r/22r hybrid. I also have a spare stock 20r intake manifold that I would be willing to part with. That along with the adapter plates and the weber would mate up to the 20r head. Sorry xxxtreme22r, just happened to have one.

xxxtreme22r

hey no problem man, those 20r intakes are hard to come by, I also saw a few recently on craigslist but they were the 20r offy ones. Been looking for one used for my 22r for a while now.

Chetgzs

Thanks for the info an yes the efi swap was the original plan but the guy that was gonna help rewire no longer can help so I'm just gonna go carb. Also I do have the hybrid but I found a guy local that wanted it so I sold it to him for a good chuck of change so I'm going to be picking up a new long block from a local engine remanufacturer which is going to be a full 22r. Which is why I was asking about the fuel injection manifold to save some money but looks like I just made myself look like an idiot haha thanks again for the info

xxxtreme22r

maybe in the future leave a little more info on what you are doing, kinda hard to help when you don't know the year of the engine and what type you are working on.