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Salutations:
Yes - 8500 pds rolling weight and I would have been sure you would have to stroke the 2.0 block to make the torque. Please elaborate if you can.
This relates to a perhaps not competely crazy idea replacing a late 70's 403 (6.6) liter smog cam Olds motor in a front wheel drive GMC 260.
I was reading up on the aero wagon - and I can't help but think that extra 70ft/pds isn't too tall an order if I intend to pull apart my '89 2.0 liter motor and rebuild anyway.
I am going to have to do the Olds engine and final drive on the motor home as part of her re-hab and current fashion with my GMC 260 crowd is to go big (and I mean BIG) block crate motors (like 590 cubic inch Caddie motors) and re-gear the differential to 321 ratios for big time performance (big block GM engines get into an good power band around 2800-3000 rpm). And they are *really* fast (and thirsty) when you are done.
Now - I'm not all that interested in huge performance gains in my engine bay as I intend to shed about 2,000 pounds in weight from the interior and frankly - I cruise happily all day long at 70mph on a stock 403 (6.6 liter) engine currently making 185hp at 3600 RPM and 320ft/lbs torque at 2,200rpm - even with the current extra weight and stock 255 ratio.
That's plenty fast for me given everything I love is sitting around the back with juice and lego when we're on the road.
Where the saab motor gets very interesting is on two fronts. One - you aren't all that interested in huge acceleration in a motor home, however you are very interested in mileage.. My 403 makes 13 miles to the gallon at 60mph cruising (although you can get into the 6 miles to the gallon range
fast booting around town). Two - as I am looking at re-gearing the differential anyway (it's a TH425 front wheel drive out of the elderado/toronado) - I can pretty much pick any cruising RPM I want up to about 3500 rpm (after that the transmission starts to heat up more than is desirable).
My investigations thus far have it that the 89 steel long block 2.0 liter engine is fairly easy to stroke up to 2.3 and it seems to be a generally
stronger block than the later castings. Moreover - given I have an amazing amount of frontal area to cool everything down - I should be able to deal
with the normally excessive heat running the turbo and engine in that RPM range will generate - with the upside that I can shave another 900 pds of big block cast iron off the coach weight AND maybe get into the 20 miles to the gallon range on it.
Getting it to mate to the TH425 looks pretty easy - it's not entirely unlike the old 900 automatic tranny set-up (save that TH425 uses pretty much the same internals as the TH400 used in the Rolls Royce through the 60's)..
Sooo - anyone have any lends or links on high torque builds and custom engine management programming talent for the 2.0 16 valve block?
posted by 24.222....
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