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Old 08-19-2005, 03:33 PM
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Bellhousing bolt pattern

I`m planning on mating a Toyota R154 manual transmission to my 350 chevy.
I can make up the adapter plate ok and deal with the clutch set-up.
I`m looking for a bellhousing to adapt. Does the SBC share it`s bellhousing mounting bolt pattern with any other engines? Or do I have to stick with a GM unit?

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Old 08-19-2005, 05:51 PM
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sbc to japbox.

4,6 & 8 cyl Chevs have a unique bolt pattern. Check out Castlemaine rod shop & Dellow automotive here in Australia as they have both been making V8 to jap 2 or 4wd trans adapters and bellhousings for over 30 years.
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Old 08-19-2005, 08:53 PM
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Stick with the Chevy V8 bellhousing. They are cheap and everywhere in the world!



Greg
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Old 08-19-2005, 09:16 PM
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Quote:
Originally Posted by IanRiordan
4,6 & 8 cyl Chevs have a unique bolt pattern. Check out Castlemaine rod shop & Dellow automotive here in Australia as they have both been making V8 to jap 2 or 4wd trans adapters and bellhousings for over 30 years.
Thanks for the reply Ian
I`ve sent emails to Castlemaine and Dellow for details/prices, but I`m also looking at doing the conversion my self with an adaptor plate and chevy bellhousing.
Do you know if the Holden V8`s share the same bolt pattern as the small block chevy? They are both GM blocks, aren`t they?

Thanks Paul
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Old 08-19-2005, 09:25 PM
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Quote:
Originally Posted by Greg55_99
Stick with the Chevy V8 bellhousing. They are cheap and everywhere in the world!



Greg
Greg
Do you know any useful casting numbers to look for?
I need the clutch fork at around the 9 o`clock position. It has to be aluminium and needs to be around 6"-61/2" length face to face.
Any idea why there is such a huge price difference between different casting numbers? For example, 3899621 seem to go for anything up to and over $200 on ebay?
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Old 08-19-2005, 09:26 PM
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Maybe a different way to skin that cat......... ? ?

Some of the Toyota Land Cruisers used a 6 cylinder bolt pattern engine.......matched to a Toyota transmission.

That bellhousing WOULD BOLT to the 350 Chevrolet........but I do not know about the Toyota R154 transmission.....
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Old 08-19-2005, 09:44 PM
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Quote:
Originally Posted by Deuce




Maybe a different way to skin that cat......... ? ?

Some of the Toyota Land Cruisers used a 6 cylinder bolt pattern engine.......matched to a Toyota transmission.

That bellhousing WOULD BOLT to the 350 Chevrolet........but I do not know about the Toyota R154 transmission.....
Deuce

Thanks for that.
I posted on here about 18months ago about this transmission/engine set up when I started my build and it appears there is a way of doing it with a Dodge or Jeep bellhousing, but involved buying an adapter plate for around $300.
That`s why I decided to use a chevy bellhousing and make my own adapter plate. I`m just trying to find out which bellhousing to look out for. We don`t have any american car scrap yards over here where I could go climbing around cars with a tape measure.
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Old 08-19-2005, 09:53 PM
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The "621" bellhousing is for an 11" clutch and has some muscle car history to it.

Dumb me, way back when my son and I were restifying the '67, I picked up 2-3 bellhousings that have been vegetating in my barn. For grins, I checked the numbers and two were 621s!
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Old 08-20-2005, 03:01 AM
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Dutch rock crawler.

Just got home after a 100k round trip to drop off old tractor parts. Pre twin cam petrol Land cruisers used a poor copy of the Blue flame Chev with a DIFFERENT bellhousing bolt pattern. Looking at the photo it could come close to a t19 spicer bellhousing - anyone tried this? To put a Chev in a manual j10/20 Jeep here we used a Dellow(9 o'clock fork) Chev to Ford top loader bellhousing and re-drilled & tapped one hole. Note the ofset g/box mounting tab and remember, jap's copy EVERYTHING.Also some Jeep cj's had the Pontiac 2.5L four in front of a T5. My hillbilly cousin had one and bolted in a sbc with a 168 tooth flywheel and homemade engine mounts. Try England for Jeep parts, the rust should have got them by now.

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Old 08-20-2005, 03:38 AM
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Middle age memory.

It's been 15 years since I paid my mortgage with engine swaps. All coming back now. 5.0l Holden(th350/400 only) from 74 to 82 had a Chev pattern, all manuals and tri-matics(local autos) had their own pattern. No help here, I'm confident that Dellow can help you and may work out cheaper than adapting to 2nd hand parts. Another thing I found in my street racing days - if your thin Chev throw out bearing won't disengage and a thick Holden one makes the clutch slip, try an early 70s M/benz one and relieve the fork. Worked like a charm and had little air gap so I didn't stretch many valves!
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