Swapping in a NV4500 trans - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jku72 · 03-10-2004, 01:47 AM

I'm thinking of swapping out my SM465 for a NV4500 5 speed in my 68 C10 burb.
Does the newer trans just bolt in, or am I on drugs?
I'm concerned with bolt pattern, and spline counts, and that sort of thing I imagine. Does anyone have any knowledge on this?

jku72 · 03-10-2004, 03:04 AM

Okay, on my own I found info on the NV4500, but what I dont have is info on my SM465.
Info I need is
1. INput spline count of SM465
2. Bell housing bolt pattern of sm465
3. Diameter of INput shaft pilot of SM465
4. INput shaft throwout bearing diameter SM465
5. Total 'stick out' length of INput shaft SM465

If anyone has a 465 laying about, and a caliper, perhaps...???

If anyone needs it, I have a good deal of data on the NV4500.

muddyole 69 · 03-10-2004, 03:10 AM

Curious just want an extra gear ? With the price of fuel that is certainly understandable Mike

jku72 · 03-10-2004, 03:24 AM

That and it keeps popping out of gear when in third. And when its cold, you cant shift out of first without a fight. Plus, highway speeds and mileage are factors as well.

muddyole 69 · 03-10-2004, 08:12 AM

Keep this post going as I am really curious what all is involved I have a bud with a wrecking yard and getting one of these would be no porblem just don't have the time to experiment if you know what I mean thanks Mike

meathead95 · 03-10-2004, 10:20 AM

i believe board member huck has done this mod try pm'ing him

jku72 · 03-11-2004, 12:23 PM

Here is as much info on the NV4500 as I have been able to find.
There are 3 basic chevrolet models, 1993-94; 1995; 1996 to present.

The 1993-1994 have the lower first gear, 6.34 ratio. they have the early style bellhousing bolt pattern, which is top horizontal measurement of 10.078", bottom horiz., 10.394", and vert. meas., 4.685"

Bearing retainer on input side is 5.125" (Matches SM465!)
Throwout bearing diameter 1.373"
10 spline input shaft
Input shaft 'stickout length: 6.625
Pilot diam.: .590"

the 1995 trans is identical to the 1993-94 except that it has the 'improved' first gear ratio of 5.61, which cured some problems that apparently plagued the 6.34 ratio.

In 1996 to present transmissions, they were resized to match the Dodge transmissions, to metric sizes. They have the 5.61 first gear.
Bellhousing mount pattern: top horiz.:10.078
Bot. horiz: 9.738
vert.: 6.043
Input bearing retainer: 5.60"

I still need the following info:
1. INput spline count of SM465
2. Bell housing bolt pattern of sm465
3. Diameter of INput shaft pilot of SM465
4. INput shaft throwout bearing diameter SM465
5. Total 'stick out' length of INput shaft SM465

If anyone has a 465 laying about, and a caliper, perhaps...???

It looks like to me that the best trans choice is the 1995 transmission, but I need the above info to know.

03-10-2004, 01:47 AM	#1
jku72 Registered User Join Date: Jan 2002 Location: cornville, maine Posts: 659	Swapping in a NV4500 trans I'm thinking of swapping out my SM465 for a NV4500 5 speed in my 68 C10 burb. Does the newer trans just bolt in, or am I on drugs? I'm concerned with bolt pattern, and spline counts, and that sort of thing I imagine. Does anyone have any knowledge on this? __________________ jku Cornville, Maine 68 C10 burb 42 Willys MB 46 Dodge WF-32 1.5 ton 53 & 56 Olds' 60 Cadillac 22 Dodge Brothers

03-10-2004, 03:04 AM	#2
jku72 Registered User Join Date: Jan 2002 Location: cornville, maine Posts: 659	Okay, on my own I found info on the NV4500, but what I dont have is info on my SM465. Info I need is 1. INput spline count of SM465 2. Bell housing bolt pattern of sm465 3. Diameter of INput shaft pilot of SM465 4. INput shaft throwout bearing diameter SM465 5. Total 'stick out' length of INput shaft SM465 If anyone has a 465 laying about, and a caliper, perhaps...??? If anyone needs it, I have a good deal of data on the NV4500. __________________ jku Cornville, Maine 68 C10 burb 42 Willys MB 46 Dodge WF-32 1.5 ton 53 & 56 Olds' 60 Cadillac 22 Dodge Brothers

03-10-2004, 03:10 AM	#3
muddyole 69 Senior Member Join Date: Jan 2004 Location: SE Ohio Posts: 1,121	tranny Curious just want an extra gear ? With the price of fuel that is certainly understandable Mike __________________ hav'n fun be'n me

03-10-2004, 03:24 AM	#4
jku72 Registered User Join Date: Jan 2002 Location: cornville, maine Posts: 659	That and it keeps popping out of gear when in third. And when its cold, you cant shift out of first without a fight. Plus, highway speeds and mileage are factors as well. __________________ jku Cornville, Maine 68 C10 burb 42 Willys MB 46 Dodge WF-32 1.5 ton 53 & 56 Olds' 60 Cadillac 22 Dodge Brothers

03-10-2004, 08:12 AM	#5
muddyole 69 Senior Member Join Date: Jan 2004 Location: SE Ohio Posts: 1,121	swap Keep this post going as I am really curious what all is involved I have a bud with a wrecking yard and getting one of these would be no porblem just don't have the time to experiment if you know what I mean thanks Mike __________________ hav'n fun be'n me

03-10-2004, 10:20 AM	#6
meathead95 computer illiterate Join Date: Jan 2001 Location: Des Moines, IA Posts: 6,446	i believe board member huck has done this mod try pm'ing him __________________ 72 2wd blazer 72 swb 4x4

03-11-2004, 12:23 PM	#7
jku72 Registered User Join Date: Jan 2002 Location: cornville, maine Posts: 659	Here is as much info on the NV4500 as I have been able to find. There are 3 basic chevrolet models, 1993-94; 1995; 1996 to present. The 1993-1994 have the lower first gear, 6.34 ratio. they have the early style bellhousing bolt pattern, which is top horizontal measurement of 10.078", bottom horiz., 10.394", and vert. meas., 4.685" Bearing retainer on input side is 5.125" (Matches SM465!) Throwout bearing diameter 1.373" 10 spline input shaft Input shaft 'stickout length: 6.625 Pilot diam.: .590" the 1995 trans is identical to the 1993-94 except that it has the 'improved' first gear ratio of 5.61, which cured some problems that apparently plagued the 6.34 ratio. In 1996 to present transmissions, they were resized to match the Dodge transmissions, to metric sizes. They have the 5.61 first gear. Bellhousing mount pattern: top horiz.:10.078 Bot. horiz: 9.738 vert.: 6.043 Input bearing retainer: 5.60" I still need the following info: 1. INput spline count of SM465 2. Bell housing bolt pattern of sm465 3. Diameter of INput shaft pilot of SM465 4. INput shaft throwout bearing diameter SM465 5. Total 'stick out' length of INput shaft SM465 If anyone has a 465 laying about, and a caliper, perhaps...??? It looks like to me that the best trans choice is the 1995 transmission, but I need the above info to know. __________________ jku Cornville, Maine 68 C10 burb 42 Willys MB 46 Dodge WF-32 1.5 ton 53 & 56 Olds' 60 Cadillac 22 Dodge Brothers



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