Needing a little help here. My brother bought this jeep with a 2.5 out of a s10 in it. well the block was cracked so he got it cheap, anyway he picks up this 2.5 off Craigslist with a fresh rebuild on it. Still bolted to the palate.
We start swapping parts and I notice a few small differences but every thing was going well. Untill I went to put the water pump on.
For some reason the water pump impeller hole on this block is 3.25" while the old s10 block the impeller hole was 3.5"
So I went to Napa for another new water pump. Thinking that since this block was carburated (Identified by the mechanical fuel pump I had to block off) I would order some thing for an early 80s Chevy with a 2.5
Well no luck, I had Napa order 3 different water pumps and all of them had a 3.5" impeler.
After a couple of hours with the guys at Napa cross referencing pumps I am at a loss.
Not I turn to you Pirate for help identifying this block and a water pump that will bolt up.
If this doesn't work I am going to fire up the die grinder and make that fucking hole 3.5"!!
Couple things about the block.
Same intake manifold as S10
same exhaust manifold as s10
Same timing cover as s10
Same distributor as S10
Same 60 degree bellhousing pattern as S10
Different water pump!! :laughing:
Also has threaded bungs in the head for Air injection before the exhaust manifold?
Going to attach a few pics.
GM block numbers 10014194-8
We start swapping parts and I notice a few small differences but every thing was going well. Untill I went to put the water pump on.
For some reason the water pump impeller hole on this block is 3.25" while the old s10 block the impeller hole was 3.5"
So I went to Napa for another new water pump. Thinking that since this block was carburated (Identified by the mechanical fuel pump I had to block off) I would order some thing for an early 80s Chevy with a 2.5
Well no luck, I had Napa order 3 different water pumps and all of them had a 3.5" impeler.
After a couple of hours with the guys at Napa cross referencing pumps I am at a loss.
Not I turn to you Pirate for help identifying this block and a water pump that will bolt up.
If this doesn't work I am going to fire up the die grinder and make that fucking hole 3.5"!!
Couple things about the block.
Same intake manifold as S10
same exhaust manifold as s10
Same timing cover as s10
Same distributor as S10
Same 60 degree bellhousing pattern as S10
Different water pump!! :laughing:
Also has threaded bungs in the head for Air injection before the exhaust manifold?
Going to attach a few pics.
GM block numbers 10014194-8