Another K30 with a 4bd1t... eventually.

Nice fab. work, welding. There is no law that says the engine has to be exactly in the middle if you are looking for front dif. clearance.

Ed in CO.

joshuak said:

And let the newbieness show. Started the project wanting to replace the 6.2 that was there originally with a 4bt or 4bdxt and a manual tranny (nv4500). Bought the motor thinking I was ahead of the game because it came with an adapter plate and was mated to a GM transmission in the POs ride. What I failed to realize it that the adapter plate is designed for GM automatics and not for manuals, huh.

I've been unable to locate another adapter plate or the OEM pieces needed for DieselTim's kit. Please post up or PM me if you know of something.

So that leaves me with what I have, PO said it was made by www.dieseladapter.com.

Is someone running a similar one with success? Built 700r4, 4L80e?

View attachment 129070

View attachment 129071


Thanks.

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I would guess you could bolt up a GM manual flywheel 168t for a SBC and everything should work

Kubotaswapper said:

Nice project! We are starting a very similar swap.
4bd1t /nv4500 into a 86 K30 that originally was a 6.2l/th400...

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Yep! Following along your thread, that's why I added "another" to this one. Love the utility body, hub caps look great. Stock height?

Kubotaswapper said:

I would guess you could bolt up a GM manual flywheel 168t for a SBC and everything should work

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Thanks for answering. Thoughts on pilot bearings? Tranny input shaft lengths?

My understanding is that this company made a different adapter for the manual transmission. I'd hate to keep adding parts to the tuition pile.

I have never had one of those adapters in my hands. I designed and my adapter kit. I am sure a shop can turn a piece of oil bronze to fit in there as pilot bearing. Just need the correct sizes.
Should be able to use a stock input shaft

Kubotaswapper said:

I have never had one of those adapters in my hands. I designed and my adapter kit...

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I remember reading posts about it and contacted you via PM a few weeks ago in my ongoing search for a proven solution to mate these two together.

Kubotaswapper said:

... I am sure a shop can turn a piece of oil bronze to fit in there as pilot bearing. Just need the correct sizes.
Should be able to use a stock input shaft

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If someone has tried and its worked for them, I hope the chime in. I understand he (Dustin Allamaras) offered a different adapter setup for the nv4500, replacing the OEM bellhousing, there had to be a reason.

If I had a access to a shop, I'd be more willing to pioneer, but I'm doing this swap in my backyard, in the dirt. I'd like something I can bolt together and have reasonable expectation for it to work.

If "if" was skiff, I'd be on a boat ride. 🥃👍

joshuak said:

If someone has tried and its worked for them, I hope the chime in. I understand he (Dustin Allamaras) offered a different adapter setup for the nv4500, replacing the OEM bellhousing, there had to be a reason.

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First I want to say I've never worked with on of these adapters. But......If memory serves correctly, the Allamaras manual transmission kit was an adapter plate between the NV4500 and the Isuzu flywheel housing making the overall cost of the conversion less expensive.........but I may be mistaken.

With that said, I have swapped GM manual transmissions in place of GM automatics on Chevy V8's. Basically, If the back of the engine can bolt up to a GM automatic, then I see no reason why it won't bolt to a manual transmission setup for the same GM engine. In other words, remove the flexplate, install the correct pilot bearing/bushing, flywheel and clutch and bolt-up the manual transmission. I'll bet you can even find an off-the-shelf pilot bearing. Check the rockuto.com catalog. It lists the ID, OD and thickness for many of the pilot bushing/bearings they sell.

joshuak said:

Working on placement of engine cross member (cfm), motor mount brackets and motor mount positioning (Anchor mounts).

View attachment 129065

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Can you share the part number for these Anchor mounts? Thanks.

Sure, Anchor 2859.
ANCHOR 2859 Motor Mount | RockAuto

Dustins kit has a block adapter, and crank adapter that makes the back of the Isuzu look like a Cummins. Then it’s all Cummins parts from the adapter plate back.

I have never seen this option. Will need to look into it for sure.

Edit-
that is pretty cool. I have a manual flywheel and pressure plate sitting In the shop that I won’t be using.

the only thing I am not found of is the extra 4” of length of the Isuzu bellhousing top of this bell.

The combined length of the Isuzu flywheel housing and the Roamerdrive bellhousing appears to be less than +4" more than a NV4500 bellhousing. I know the Cummins/NV4500 bellhousing in my Dodge appears longer than the Roamerdrive bellhousing.

that’s even cooler! I am on the road driving from CA to SD and have not been able to research it much. Not the avenue I am taking but definetly a nice option!
Ken

95Z28A4 said:

The combined length of the Isuzu flywheel housing and the Roamerdrive bellhousing appears to be less than +4" more than a NV4500 bellhousing. I know the Cummins/NV4500 bellhousing in my Dodge appears longer than the Roamerdrive bellhousing.

https://i.ebayimg.com/images/g/2GMAAOSwkfRfKeWr/s-l1600.jpg

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Just pulled measurements from my 1998 Dodge. The NV4500 bellhousing is 6-3/4" long and the Cummins/Dodge adapter plate is 2-3/8" long for a total of 9-1/8".

I think pilot bearing you need is sfk bearing # 6302-2rsj .