5.3 into a 1990 OBS with a 5 speed

[99kon]

Have asked this question on other forums but no luck.
I have an 06 5.3L that is gong into my 1990 OBS. I want to keep the 5 speed and was wondering if the flywheel will work on the 5.3L motor.

This is the truck. Just bought a month ago.
plans:

4/6 drop
All new front suspension compnents
5.3l motor
harness and PCM
This is at the house and waiting to be installed
I also have a 6.0 that I will be building for the next couple of years or so.
Finally going forged 408 and turbo!

[Frenchy]

You need an 01-05 4.8 5speed flywheel. There is ZERO aftermarket versions, so you're stuck with the heavy stocker

[99kon]

Stocker it is!
Dam i was hoping for something lighter but at least it is possible. I didn't want to spend more money on a trans swap right now.

[DANSBIRD]

Not to hijack your thread, but I'm doing this very project, as well, and am wondering what all is involved w/ making the 5-speed mate up w/ the 5.3L.

Any and all info would be greatly appreciated.



BTW... what 5-speed transmission is in the '90 Silverado? I thought it was an NV3500, but now I'm not so sure.


Thanks

[99kon]

As above posted all you need is the flywheel from an 01-05 flywheel from a 4.8 motor. I got a NV3500 because I had to replace the original because it took crap on me. But I think my truck came with a gettrag or something like that. NV3500 did not show up until later.

[DANSBIRD]

Nice, thanks. I figured there was more to it than just the flywheel.


Everything I've been finding uses Getrag 290 & NV3500 synonymously. Hmmm... but wikipedia says the NV3500 didn't show up until '93.

[99kon]

Just picked up the last 4.8 flywheel in Houston from O Riley's.

[99kon]

Ok
2 things
I had to take the line up pins on the flywheel off in order for the pressure plate to sit right. Holes line up no problems there. Or is there?
Your thoughts

The pilot bearing is loose on my crank. Enough for me to know that it's not right. Any way I can get a shim and wrap the bearing in it or look for a bigger one? My motor is a 6.0 so that might be the difference.

[blacstar]

Ok
2 things
I had to take the line up pins on the flywheel off in order for the pressure plate to sit right. Holes line up no problems there. Or is there?
Your thoughts

The pilot bearing is loose on my crank. Enough for me to know that it's not right. Any way I can get a shim and wrap the bearing in it or look for a bigger one? My motor is a 6.0 so that might be the difference.

Tell what kind of flywheel, pilot bearing, and pressure plate/clutch disc do you have? you got 5.3l written in the title
Im sorry i didnt know you went with a 6.0l its gonna be different. gotta get a car/ls1 pilot bearing. make sure ur input shaft measures 1-1/8 10 spline. and that the clutch diameter is a 11 7/8 in.

[99kon]

That was the original plan to put a 5.3 in it while I built the 6.0.
But fuck it might as well just go with the 6.0 and buy parts here and there. I'll measure the input shaft and the clutch tomorrow. Everything is at my dads house. I hate not having enough room.

P/N's
Flywheel Oreilys $60 NFW1050
Pilot Bearing Napa $20 6302-VSP43
Release Bearing Ebay $20 1377C
Clucth Stock
Pressure Plate Stock