Engine Swap Everything about swapping an engine into your Third Gen.....be it V6, V8, LTX/LSX, crate engine, etc. Pictures, questions, answers, and work logs.

simple engine swap ?

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Old 05-28-2014, 04:47 PM
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Car: 1987 irocz
Engine: 5.0 305 tpi
Transmission: stock auto
Axle/Gears: stock not sure the ratio
simple engine swap ?

So i have a 305 tpi and its about shot so im looking for a new motor my ?s are
1: can i use a 305 with a carb or tb from a truck ir older car and put my tpi intake on it?
2: if i find a 350 would my tpi intake manfold and runners workon it
3: would everything from yhe front of my motor bolt onto aa non tpi motor? ForFor the swap toto tpi if its possible
4: would i have to swap headers/a
Old 05-28-2014, 04:49 PM
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Car: 1987 irocz
Engine: 5.0 305 tpi
Transmission: stock auto
Axle/Gears: stock not sure the ratio
Re: simple engine swap ?

This is off my phone and it keeps
Tweeking out so sorry if its hard to read
Old 05-28-2014, 05:52 PM
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Car: 85 T/A
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.27
Re: simple engine swap ?

1) yes, but you would be stepping down in performance.
2) yes, but if its an older style engine there will be minor mods needed.
3) yes
4) no
Old 05-28-2014, 10:42 PM
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Car: 1987 irocz
Engine: 5.0 305 tpi
Transmission: stock auto
Axle/Gears: stock not sure the ratio
Re: simple engine swap ?

I plan on getting one soon to build over the summer/winter i would just rebuild mine but i think the pistons and cylinders are worn so i would have to get the cylinders bored out and i dont want to do that
by build i mean cam and everything that goes with that and mybey see if my heads are good and put them on the regular 305 to give it the high output heads know the valves and rods are part of the headsheads
Old 05-29-2014, 09:32 AM
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Car: 85 T/A
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.27
Re: simple engine swap ?

TPI engines have flat top pistons and TBI's have dished pistons. You can make it work with whatever combo you decide on. A truck block came factory with a 168 tooth flex plate and a car block has a 153 tooth flex plate. They use different starters with different mounting bolt patterns. Make sure the block you get has the same mounting pattern as the starter you have now. Some blocks are double drilled and some aren't.
Old 05-29-2014, 05:49 PM
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Car: 1987 irocz
Engine: 5.0 305 tpi
Transmission: stock auto
Axle/Gears: stock not sure the ratio
Re: simple engine swap ?

Ok so new ? When i do the swap i want to clean up the bay so im removing my ac unit as i dont use it and i want to remove the evap canister but i dont want that gas smell is there any vehical that have a smaller canister tjat i can swap in to stop the smell

In my old truck i had removed the ac and evap canister and never smelled gas but i also had open wheel wells on that
Old 05-29-2014, 05:57 PM
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Car: '89 Camaro
Engine: LS1
Transmission: 4L65/70E
Axle/Gears: 9 Inch, 3.70 gears
Re: simple engine swap ?

The better answer if about if your TPI intake will fit is as long as the heads match. the '86 and earlier heads or the '87 and later heads have a different center bolt angle. The intake can be hogged out with dremel to work, but that is kinda shade tree. If you run the casting numbers on the heads while at the yard, you should be able to see what year the heads are fairly easily.

As far as charcoal canister, I don't believe there is a smaller one, but I think a few people have relocated it to the underside of the tray where it sits stock. You may have to lengthen some vacuum hoses and wires in order for it to reach.
Old 05-29-2014, 06:05 PM
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Car: 1987 irocz
Engine: 5.0 305 tpi
Transmission: stock auto
Axle/Gears: stock not sure the ratio
Re: simple engine swap ?

Mines a 87
I would be looking for 87 to 93 motors? I think im going to try and find a jy tpi engine that i can build as my local jy charges 220 bucks with out srt alt and pullys and they havr a 30 return policy so if i pull the heads the same day i get it ill be able to see if its good if not ill be able to return it
Old 05-29-2014, 07:11 PM
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Car: '89 Camaro
Engine: LS1
Transmission: 4L65/70E
Axle/Gears: 9 Inch, 3.70 gears
Re: simple engine swap ?

Yeah, that will work for now. The only thing is that you mentioned was building the motor down the road, and you will be limited to the '87 and up heads. If that isn't an issue, then yeah, go ahead and pull the trigger. If you are able to exchange the heads, check out the spot between the middle two cylinders on each head. That's where SBC heads tend to crack.
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