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4g63 wideblock


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#21 psu_Crash

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Posted 09 April 2012 - 07:35 PM

I know this is an old thread but I just learned something. I had no idea the G63B was ever made in a SOHC wideblock.
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#22 QuickMitz

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Posted 09 April 2012 - 08:25 PM

Yeah the 4g63/64 wideblocks are really hard to find, I just got my 6 bolt 4g64 bottom end today actually and there almost impossible to find.

#23 monzaa

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Posted 12 April 2012 - 07:58 PM

Soo the starion flywheel  will bolt up and I got. To find a adapter plate ? Oil pan and switch the coolant ports from back to front

#24 AUSSIEOLDIE

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Posted 23 June 2012 - 03:44 PM

Wide blocks are RWD & the top 2 bolt holes in the back of the block  measure 130mm centre to centre.
Narrow blocks are FWD /AWD & the top2 bolt holes in the back of the  block measure 110 mm centre to centre

Edited by AUSSIEOLDIE, 23 June 2012 - 03:46 PM.

I've had mine since 1992!

#25 importwarrior

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Posted 26 December 2013 - 12:35 PM

the bottom 2 bolt holes for the trans to block need to be 13.25 inches to be a wide block.


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Edited by importwarrior, 26 December 2013 - 12:39 PM.

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#26 ZacMan

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Posted 30 December 2013 - 03:42 AM

All European, General Export, and Japanese Starions came with the g63b/4g63 wideblock up until mid 87, then things become a bit cloudy, some still had the 2.0L, while others moved to the 2.6L. In America they used the G54B from the beginning in 1983 to meet your emissions laws at the time.

Auto or Manual, doesn't make any difference, if its a g63b/4g63 originally from a Starion, it's a wideblock. The 2.0L Starions use the exact same KM132 manual trans the 2.6L Starions use, and I can only assume they share the auto's too, but I have no personal experience to back that up.

the g63b/4g63 designation is purely a year thing, and has nothing to do with RWD/FWD/AWD. They changed it somewhere late 85 I believe. My 1986 European spec 2.0L starion still has it's factory wideblock engine and KM132 trans fitted, and it has 4g63 stamped on the side. My 1982 Japanese spec 2.0L starion still has it's factory wideblock engine, and it has g63b stamped on the side. The two engines are almost identical however, just a few cosmetic differences, like a cast vs pressed cam gear, for example.

Edited by ZacMan, 19 January 2014 - 11:58 PM.


#27 TsTKl

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Posted 02 January 2014 - 11:10 PM

most accurate post in this thread /\

just to clarify: the engine designation has nothing to do with narrow/wide or RWD/AWD/FWD.

For US 2.0 what kane said is all that matters:

Mighty Max, D50, Ram50.  2.0L (engine code g63b) Automatic only.  Measure lower bellhousing bolts to be sure, 13.25 inches center to center.


for 2.4 liter engines there are some vans etc you can find.
proof it did run at one point...
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