New in Colorado, blown 99 Suburban vortec looking to upgrade/swap.

So looks we did some damage to the 5.7 engine this weekend heading up the passes. Since we are looking at replacing the engine thought we would research doing a swap to a newer better setup. Perhaps even pulling the tranny out and going stronger as well.

I have seen a variety of talks about throwing the newer 5.3 and 80e into vehicles but can't find any thing that breaks it down on what is available now a days and the benefits. We want a strong daily driver that can go over the passes and carry a full load of family for vacations. Better gas efficiency is nice and of course power that doesn't destroy the gas mileage. :-)

Thanks!


John

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Originally Posted by JKutzsch

So looks we did some damage to the 5.7 engine this weekend heading up the passes. Since we are looking at replacing the engine thought we would research doing a swap to a newer better setup. Perhaps even pulling the tranny out and going stronger as well.

I have seen a variety of talks about throwing the newer 5.3 and 80e into vehicles but can't find any thing that breaks it down on what is available now a days and the benefits. We want a strong daily driver that can go over the passes and carry a full load of family for vacations. Better gas efficiency is nice and of course power that doesn't destroy the gas mileage. :-)

Thanks!


John

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The 5.3 or 6.0 would be perfect for your burb. There is a super long thread on here somewhere explaining the OBS to Gen III swap in great detail.

I saw the stickie talking about how to do it but I am not finding something that explains the benefits of each over the other. The 6.0 is the LS1 right?

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Originally Posted by pl4yboy

The 5.3 or 6.0 would be perfect for your burb. There is a super long thread on here somewhere explaining the OBS to Gen III swap in great detail.

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5.7 is LS1. 6.0 is a LQ4, LQ9, or L76, depending on which vehicle it came in. There are multiple benefits of the LS based motors over the older motors. Reliability, performance, output, mileage...

Quote:

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Originally Posted by pl4yboy

5.7 is LS1. 6.0 is a LQ4, LQ9, or L76, depending on which vehicle it came in. There are multiple benefits of the LS based motors over the older motors. Reliability, performance, output, mileage...

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So either the 5.3 or 6.0 not the 5.7? I am assuming all will require wiring and computer swap. Just trying to factor bang for buck with limited funds...

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Originally Posted by JKutzsch

So either the 5.3 or 6.0 not the 5.7? I am assuming all will require wiring and computer swap. Just trying to factor bang for buck with limited funds...

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5.7 would work too, but they are more expensive and harder to obtain. Wiring, computer, and fuel are the major issues. Depending on which motor mounts you use will determine other factors such as driveshaft and cross member relocation.

John, the fact thats it is a 4x4 may also make a difference..

4x4 wont make a difference. The only thing that would effect is if a the tranny was changed.

Ok,
I'm currently going through parts trying to find prices, What is the average cost in doing a swap to a 5.3?

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Originally Posted by 77Warlock

Ok,
I'm currently going through parts trying to find prices, What is the average cost in doing a swap to a 5.3?

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That depends if you can do all the wiring yourself, what kind of prices you pay for parts, and any aftermarket added. I really couldn't even begin to guess as I haven't done the swap. Maybe you should PM RedHeartBeat. He may be able to give you an estimate.

Thanks, will do