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Hi all

Anyone know what performance increases or decreases i can expect from an unmodified first gen. 6BT / NV4500 swap into a 454/ 4 speed C30 with 4.10 gears?

thanks, mike
 

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You might be able to pass a gas station for sure now :eek: Unloaded your mileage will definitely be better for 2 reasons. 1) Diesel Engine vs Gas 2) Overdrive.
 

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After the swap on my C30 I get around 17 MPG w/3.54 ratio on a trip
 

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All you need is a screwdriver and a metric socket set to massage the pump a little:grinpimp: for some good gains.

My first gen got 17 mpg stock, with a modest turbo swap and some pump tweaks I averaged 20 mpg. My best ever was 23 1/4 (unloaded, on a strait road with the wind behind me)
 

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oh, and that thing is gunna blow you 454 away!!!
 
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