Mid engine mounting
I need a friend with lots of transmission knowledge.
Even in a feather weight car....If you ever got traction, A LMM would be hell on a 4L60E.
I believe the Duramax has the same crank spacing as Gen 1 SBC's & BBC's, So you would need a 298mm Bellhousing, C5 4L60E's already have a 298mm Input Drum/Turbine shaft.
The Durmax used in Vans had a 4L80E behind them, But NOT sure if the flexplate is the same in Allison 1000 versions, Pretending they are the same.....You will need to drill a new set of torque bolt holes OR have a converter built with a 11.50" bolt circle vs the 10.75" bolt circle found on stock 298mm converters.
First thing I would do is put the 298mm C5 converter on the back of the Duramax to see if it engages in the crank.
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Even in a feather weight car....If you ever got traction, A LMM would be hell on a 4L60E.
I believe the Duramax has the same crank spacing as Gen 1 SBC's & BBC's, So you would need a 298mm Bellhousing, C5 4L60E's already have a 298mm Input Drum/Turbine shaft.
The Durmax used in Vans had a 4L80E behind them, But NOT sure if the flexplate is the same in Allison 1000 versions, Pretending they are the same.....You will need to drill a new set of torque bolt holes OR have a converter built with a 11.50" bolt circle vs the 10.75" bolt circle found on stock 298mm converters.
First thing I would do is put the 298mm C5 converter on the back of the Duramax to see if it engages in the crank.
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