Muncie to 5.3L Pace Performance Conversion Kit Questions
Thread Starter
Staging Lane
Joined: Jul 2011
Posts: 68
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Muncie to 5.3L Pace Performance Conversion Kit Questions Ok, so, this is yet another old trans to modern engine thread, but more specific questions than I've been able to find on here since I'm using a supposedly bolt up kit.
Before the bashing starts, I'm using a Muncie because I have an M20 that was built by Jerry Macneish and I love it, don't want to cut up the new floor and fire wall of my 65 Chevelle, its light, and I'm only using a 375 HP all alum. 5.3L with a juicy cam. The muncie will handle the HP. I'm not drag racing it.
Anyway, I bought this kit from Pace Performance: http://paceperformance.com/i-6535763...to-500-hp.html
It supposedly allows you to bolt any old school trans to any LS based engine. However, I've read that the 5.3 never came with a stick and there are spacers and etc. that need to be used. Also read that all hardware needs to be from a 4.8 or 6.0. Not sure what this kit uses for fasteners, but they're all ARP. It also came with a spacer for the bell housing.
Will this kit work as is on the 5.3? Should I use the spacer or not (apparently the 5.3 has a shorter crank)? I also know that the pilot shaft doesn't usually fit all the way into the crank, so will eliminating this bell housing spacer solve that issue or are the parts used in this kit already configured for this application?
Any help is appreciated; however, I haven't found anybody out there that has used this kit.
Before the bashing starts, I'm using a Muncie because I have an M20 that was built by Jerry Macneish and I love it, don't want to cut up the new floor and fire wall of my 65 Chevelle, its light, and I'm only using a 375 HP all alum. 5.3L with a juicy cam. The muncie will handle the HP. I'm not drag racing it.
Anyway, I bought this kit from Pace Performance: http://paceperformance.com/i-6535763...to-500-hp.html
It supposedly allows you to bolt any old school trans to any LS based engine. However, I've read that the 5.3 never came with a stick and there are spacers and etc. that need to be used. Also read that all hardware needs to be from a 4.8 or 6.0. Not sure what this kit uses for fasteners, but they're all ARP. It also came with a spacer for the bell housing.
Will this kit work as is on the 5.3? Should I use the spacer or not (apparently the 5.3 has a shorter crank)? I also know that the pilot shaft doesn't usually fit all the way into the crank, so will eliminating this bell housing spacer solve that issue or are the parts used in this kit already configured for this application?
Any help is appreciated; however, I haven't found anybody out there that has used this kit.
Pretty expensive kit. Do you need the blowout proof bell? If not there's a link to the Pace kit with 621 bell in this thread,
And a note on the ARP bolts, there needs to be a sealant on the flywheel crank bolts to prevent oil from seeping through. The GM ones come with it alread applied..
https://ls1tech.com/forums/conversio...-ls-motor.html
And a note on the ARP bolts, there needs to be a sealant on the flywheel crank bolts to prevent oil from seeping through. The GM ones come with it alread applied..
https://ls1tech.com/forums/conversio...-ls-motor.html
Last edited by garys 68; Jan 21, 2013 at 10:30 AM.
That spacer should be the block protector plate,its required for SFI specs.The flywheel provided should be extra .400 thick,similiar to the NFW1050,you shouldn't need any spacers or funky pieces.Have you called Pace?I would hope they can answer your questions on their own kit,if they can't I would send it back.
Thread Starter
Staging Lane
Joined: Jul 2011
Posts: 68
Likes: 0
Yeah, it was pricey, but sometimes you get what you pay for... fingers crossed...
I watched that video and is one of the reasons for my post. The guy in the vid had a couple issues like the pilot shaft not fitting into the crankshaft all the way, but I'm hoping this kit has it all worked out. If not, I suppose I'll do what he did and just leave the pilot bearing out a bit, but I don't really like that too much.
I'm also looking for a good shop manual for the engine for torque specs and etc.
Thanks for the tip about the thread sealant. Any particular thread sealant?
Is Loctite required on any of the flywheel or pressure plate bolts?
Thanks for your help guys. Super happy about finally deciding to go with a modern engine, but I'm still learning.
I watched that video and is one of the reasons for my post. The guy in the vid had a couple issues like the pilot shaft not fitting into the crankshaft all the way, but I'm hoping this kit has it all worked out. If not, I suppose I'll do what he did and just leave the pilot bearing out a bit, but I don't really like that too much.
I'm also looking for a good shop manual for the engine for torque specs and etc.
Thanks for the tip about the thread sealant. Any particular thread sealant?
Is Loctite required on any of the flywheel or pressure plate bolts?
Thanks for your help guys. Super happy about finally deciding to go with a modern engine, but I'm still learning.
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TECH Addict
Joined: Aug 2005
Posts: 2,305
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From: Monroe,NY
The 5.3 is no different than the 4.8.here is the torque specs http://ls1howto.com/index.php?category=1
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