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JR's 91 K5 Modern meets Classic (NV4500 help needed)

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79bonanza said:
Chevy305, you have a pretty slick truck yourself, I read your build and seen you went with the manual clutch with your nv4500. Do you know any trick for running a hydraulic style
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Thanks!
My NV4500 is a '95 which is a bit of an oddball. It has the higher 1st gear but still external slave on the passenger side. My SM465 was a manual clutch so instead of converting the firewall and pedals to hydro I chose to run the AA bell housing which allows for either the manual clutch or an external slave on the passenger side just like factory hydro SM465.
 
Oh okay thanks, do you happen to have a part number or a link to the AA bell housing . Everytime I try to find it I always end up only finding the one for jeeps
 
79bonanza said:
Okay well I've decided to go ahead and buy an NV4500 to put in my blazer. It's going behind an LQ4. That being said I have a few questions.

2. Will the internal slave/throw out bearing work with the square body master cylinder. I should just need a custom line made for it,right?
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I am hoping this is the case, I have this setup installed on my crewcab but it will be a few weeks before I get home and find out. I still have to get the rear driveshaft shortened to know for sure. I will let you know what I find out. Also i will see if I still have the part# for the parts i used to build my "custom" line.

Edit*
These are the parts I used for my line from clutch master to internal slave cylinder. You maybe able to do it with different parts or less fittings but this is what i did.

Speedway motors Part#5151396 Link - This adapts the internal slave to a -3AN
Speedway motors Part#91031846-3 Link - 36" Braided -3AN hose
Summit Part# EDD-262880 Link - 7/16-24 FIF X 12mm -1.0 MBF goes into master cylinder
SACC Restoration Part# sa1210-3 Link - 12mm -1.0 X -3AN goes with above adapter

I also used the remote bleeder and it made things 100% easier
Speedway motors Part#5151399 Link - I used the 24" hose
 
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Subscribed for awesomeness. :saweet:

This is about how far I've gotten on my NV4500 swap. I'm planning to stick with the early case and drill 3 new holes to match a hydro SM465 bell housing. Slave cylinder will be in the stock location for this series of truck.

Is there some reason that you don't want to have an external slave? :dunno:
 
Well I've decided to run the internal slave so it doesn't interfere with my exhaust. And it's just easier to find replacements if it goes bad out on the trail or road trip
 
79bonanza said:
Well I've decided to run the internal slave so it doesn't interfere with my exhaust. And it's just easier to find replacements if it goes bad out on the trail or road trip
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Interesting. Ease of replacement on the trail/road is exactly why I didn't want an internal slave. How easily can I mess with something inside the bell housing when I'm on the side of the road? :dunno:

Is it the driver-side slave (square-body) or the passenger-side slave (GMT-400) that is in the way of the exhaust? This is news to me (and relevant to my own swap).

How are you going to adapt the new bell housing to the old tranny case? Or are you going to be looking for a newer case so the parts still match?
 
Well I wasn't really looking at it as ease of replacement on the trail lol just it'll be easier to find at the parts store if it goes bad.

Where I'm running the LQ4 with GTO manifolds and the point straight at the factory square body slave cylinder.

I'll be running a 95-99 nv4500 and its bell housing. I want the more usable 1st gear myself.

Plus running the internal slave like that I can route my clutch lines out of the way a lot easier. And keeping the parts to fix it if it gets a leak will be easy. (It's all AN fittings and lines)
 
79bonanza said:
Well I wasn't really looking at it as ease of replacement on the trail lol just it'll be easier to find at the parts store if it goes bad.

Where I'm running the LQ4 with GTO manifolds and the point straight at the factory square body slave cylinder.

I'll be running a 95-99 nv4500 and its bell housing. I want the more usable 1st gear myself.

Plus running the internal slave like that I can route my clutch lines out of the way a lot easier. And keeping the parts to fix it if it gets a leak will be easy. (It's all AN fittings and lines)
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Oh. I thought you were specifically wanting the older first gear.

Reading back through the thread, it was this statement that confused me:

79bonanza said:
Does anyone know if the front bearing retainer on the early style nv4500 is the same as the later style. I'm wanting to run the internal slave/throw out bearing assembly found in the later model trucks while keeping the lower first gear ratio the early 93-94 nv4500 have.
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If you're wanting the later first gear, then you'll be all set by simply finding a newer tranny and rocking it. :saweet:
 
Haha yeah I changed my mind lol I was doing some crawl ratio calculations and with the gears I'm going to run would make my 1st gear useless lol so yeah I just changed my mind on it lol
 
With 4.88 in the axles and the np241 low range the crawl ration with the early nv4500 is 84.1:1 and the later nv4500 it's 74.6:1

Honestly that's more than enough for me, and with 35" tires at 70mph the engine should be around 2100 rpm
 
e95da9d19aa7fb707ec84ca2446df903.jpg


Conflicting results lol
 
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