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donnorby84

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Hello ck5 members! My name is Don i'm happy to joint this site . I really hope to get some help from some very well knowledged members. I have a 84 gmc jimmy 4x4 k5 with a blown 305, i came up on a 350 from a 95 sierra i want to install it with the carb i have on my 305. what parts do i need?
 
the research ive done so far tells me ill need a fuel pump. can i also run the alternator from the 95 350 tbi with accessories im not sure what parts are compatible between the 1984 305 and 1995 350 tbi.
 
Everything is compatible, you should be able to swap most of the intake stuff onto the 350 from your 305. As long as the new 350 doesn't have vortec heads, and it shouldn't. The fuel pump, you may need to run an electric one...I'm not sure if the 95 350 has a fuel pump provision and a block off plate or not. Also not sure if the cam has a fuel pump eccentric or not.
 
tRustyK5 said:
Everything is compatible, you should be able to swap most of the intake stuff onto the 350 from your 305. As long as the new 350 doesn't have vortec heads, and it shouldn't. The fuel pump, you may need to run an electric one...I'm not sure if the 95 350 has a fuel pump provision and a block off plate or not. Also not sure if the cam has a fuel pump eccentric or not.
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Its actually not drilled out on the 350 for the mechanical fuel pump. can i also swap out the water pump, alternator, and brackets from the 305 to 350?
 
You could...

But would you want to?

A cheap (20-25 bucks) wiring adapter plugs the '95 alternator directly to the stock harness, and the P/S pump should accept the lines from the '84. Or use the 95 lines into the 84 steering box...

Serp belt wins over the multiple belts all day...
 
Serp wins until you throw the belt and lose cooling, steering, charging etc all at once. I had an alt seize the bearing, which caused the pulley nut to loosen just enough to throw the serp belt off onto the road. Good thing I lost power steering which clued me into the belt being gone, because engine temps went from 190, to 215 and climbing in seconds...

With V belts, I could have driven the 10 miles back to the last town I drove through to pick up a new alt and a new belt. With the "superior" serp system I was stranded. I was fortunate my wife was following so I didn't have to walk the ten miles back to town...but my Blazer wasn't going anywhere.
 
I view it the other way...

Lose any one thing and you lose P/S. Instant clue into something is wrong.

And you should've heard that alternator long before it seized hard enough to throw the pulley...

I mean, it ain't easy to throw a pulley unless it wasn't even tight to begin with.
 
thanks guys i appreciate your help. Im actually gonna make it tbi ,but i want to carb it for now, untill i get everything i need for that swap. From the research ive done i know i need a fuel pump, harness, fuel lines, reprogrammed ecu and a way to run the tranny in my jimmy since it aint electronic.
 
Justin V said:
I view it the other way...

Lose any one thing and you lose P/S. Instant clue into something is wrong.

And you should've heard that alternator long before it seized hard enough to throw the pulley...

I mean, it ain't easy to throw a pulley unless it wasn't even tight to begin with.
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It didn't seize, but started to drag. The direction of rotation and the great grip the serp belt has did the rest...and in short order. I never heard a thing, but Blazer's can be loud on the highway with muds. It loosened the alt pulley just to the point it threw the belt, so when I got pulled over the pulley and nut were still there. I had tools with me, and my wife grabbed the belt off the road and brought it to me. I tightened the nut back up, spun the alt by hand and although warm it wasn't seized or even crunchy. I put the belt back on, and made it less than a quarter mile before it chucked the belt again. Again I didn't hear anything untoward even driving slower. I was fortunate my wife was behind me in her rig, rather than riding in the passenger seat.

My point is not that you wouldn't have as much a clue with either...it was that with one I walk ten miles, and with the other I drive. There was no way for me to bypass the alt and re-route the serp belt.
 
donnorby84 said:
thanks guys i appreciate your help. Im actually gonna make it tbi ,but i want to carb it for now, untill i get everything i need for that swap. From the research ive done i know i need a fuel pump, harness, fuel lines, reprogrammed ecu and a way to run the tranny in my jimmy since it aint electronic.
Click to expand...

Save for a 5.3 LS swap. Better bang for the buck and not much more spendy really...
 
tRustyK5 said:
Save for a 5.3 LS swap. Better bang for the buck and not much more spendy really...
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yeah i wanted to but im gettin everything from a buddy he has the 95 sierra. he is actually doing the ls swap in his, tso i basically have everything for tbi. were just confused on making my 700r4 work since it aint electronic.
 
donnorby84 said:
yeah i wanted to but im gettin everything from a buddy he has the 95 sierra. he is actually doing the ls swap in his, tso i basically have everything for tbi. were just confused on making my 700r4 work since it aint electronic.
Click to expand...
TBI's came with 700r4's too. Just get the cable and bracketry for a 87-91 squarebody.
 
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