Tbi / 700r4 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**truckster** · 02-01-2013, 01:42 PM

Yesterday my Blazer threw a rod on the way home. It looks like the block may have sustained some damage, so I'm not considering rebuilding it.

I looked at crate motors, and they're just too expensive for what I want.

So I have an opportunity to buy an 89 with a 5.7 and 700R4. If any of you are running that combo, especially on a 4wd, I'd love to hear what your mileage is and how the install went.

I know I'll need a trans adapter, and I plan on moving the engine forward to leave the driveshafts alone. How much of a pain was hooking up the ECU? Anything else I should know about?

Thanks, I know you guys always have a lot of information to share.

02-01-2013, 01:42 PM	#1
truckster Senior Member Join Date: Jan 2001 Location: Orem, Utah Posts: 7,882	Tbi / 700r4 Yesterday my Blazer threw a rod on the way home. It looks like the block may have sustained some damage, so I'm not considering rebuilding it. I looked at crate motors, and they're just too expensive for what I want. So I have an opportunity to buy an 89 with a 5.7 and 700R4. If any of you are running that combo, especially on a 4wd, I'd love to hear what your mileage is and how the install went. I know I'll need a trans adapter, and I plan on moving the engine forward to leave the driveshafts alone. How much of a pain was hooking up the ECU? Anything else I should know about? Thanks, I know you guys always have a lot of information to share.



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