O8 engine swap issues

Rbarfitt@gmail.com · Nov 22, 2016

Hi, guy's. Looking for some assistance with my engine swap. 08 auto 5.7 1500, installing a 05 5.7 from a manual transmission. Switched our the flywheel. Left the tourq converter in the transmission. Now I can't seem to get it tight back together looks like about 3/16" gap between the bell housing and block and the flywheel seems to be pinching as I can't rotate the engine when you pull together. Any ideas ?

RonJon '06 · Nov 22, 2016

Did you remove the pilot bearing and bushing? If the bushing is still in the back of the crankshaft then the torque converter won't fit into the opening.

Rbarfitt@gmail.com · Nov 22, 2016

Could I have bolted up the flywheel it was still on there?

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RonJon '06 · Nov 22, 2016

Yeah the flex plate for you're '08 would still fit with or without the bushing removed. The 6.1L crankshaft that I have in my truck (Auto Trans) came out of a car with a manual transmission and Inertia Motorsports had to remove the bushing before they shipped it.

Rbarfitt@gmail.com · Nov 22, 2016

Thanks for the info. Sucks... Out it comes again

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Rbarfitt@gmail.com · Nov 22, 2016

I thinking it's probably worth putting the converter on first?

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RonJon '06 · Nov 22, 2016

You're welcome and welcome to the Forum.

The converter should stay on the input shaft. Once you have the bushing out it will fit together easily if lined up properly. Bummer about the extra work.

Rustycowl69 · Nov 22, 2016

RonJon '06 said:
You're welcome and welcome to the Forum.

The converter should stay on the input shaft. Once you have the bushing out it will fit together easily if lined up properly. Bummer about the extra work.

ABSOLUTELY agree. I can't emphasize enough, the TC must be installed into transmission, first. All the sets of splines must be engaged with the reaction shaft, AND the dogs on the TC snout must be engaged into front pump of trans. Some people make a little tab bolted to front of bellhousing to insure the TC doesn't slide forward and out of engagement while going thru the gyrations of installation. I just make a note of how far in the converter sits in relation to mounting surface of bellhousing to block. It can be a little difficult to reengage splines/dogs so try not to let it slip out. Whatever you do, do NOT use bolts to draw trans to block if it doesn't want to meet together. If you do force it together, you will probably break the front pump, minimum.

RonJon '06 · Nov 23, 2016

In case you don't have your old engine for reference this is what it looks like with the bushing removed.

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HemiLonestar · Nov 23, 2016

You do realize you are putting a non-MDS engine into an MDS vehicle?

Rbarfitt@gmail.com · Nov 23, 2016

Thanks guys for the info. It was the pilot bearing causing the issue.
Regarding the non Mds engine in the MDS truck. I've been told it shouldn't be a issue, but if that's not the case please let me know.

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Rbarfitt@gmail.com · Nov 23, 2016

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Rbarfitt@gmail.com · Nov 23, 2016

Would this setup on the 05 engine mean I could convert it to a MDS engine?

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charonblk07 · Nov 23, 2016

[email protected] said:
Would this setup on the 05 engine mean I could convert it to a MDS engine?

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You can convert it to MDS by replacing the lifters with MDS lifters and putting the MDS solenoids where the plugs are. That said, most of us want to delete the MDS and that can be done with a programmer to deactivate it and you don't need to pull the heads off to do that.

HemiLonestar · Nov 28, 2016

[email protected] said:
Would this setup on the 05 engine mean I could convert it to a MDS engine?

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Yes you could, the engine was designed with MDS in mind years before it was actually utilized in any vehicle (first year being 05 in the 300 and Magnum). You'll have to pull the heads, replace the cam and lifters with MDS hardware plus install the solenoids and harness. You'll also need new head bolts, as new hemi head bolts are torque to yield (which stretches them). Once you do all that, reuse your old sensors, accessories, etc it's plug and play. If you don't want to go through all that, then you need a programmer to turn the MDS off prior to cranking it up.

Rbarfitt@gmail.com · Nov 28, 2016

Thanks for the MDS info. Engine is in now with no mds installed. I am getting error code 3401 mds circuit fault. Do you think if I hooked up the solenoids not installed would solve the problem. I know that It is a bit redneck!

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charonblk07 · Nov 28, 2016

You need to deactivate the MDS in your tune since it's not hooked up to anything, whether they're hooked up or not is irrelevant.

HemiLonestar · Nov 28, 2016

No. Get a tuner and turn the MDS off. Putting the solenoids in won't do you any good without the corresponding lifters/cam set. The computer will attempt to shove oil through those passages and it won't work and you'll still get an error. Find a cheap used Superchips tuner and turn it off. While you're at it you can load one of the tunes and enjoy your truck more, especially since you can tune the trans with it.

Rbarfitt@gmail.com · Nov 29, 2016

Sorry, didn't explain that right. Put the solenoids in the electric circuit not actually in the block.

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HemiLonestar · Nov 29, 2016

LOL still no. Where exactly would you put them?

O8 engine swap issues

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