>> I know a few of you out there have some experience in either
>>"hot rodding" a TR6 engine or converting a GT6 to a TR6 and then hot rodding
>>that engine.
What exactly do you want to accomplish with your GT6 engine?
If you are looking for a serious performance increase, you should
start with stroking the engine - "there is no substitute for cubic
inches." In Vizard's book ('How to build Horsepower,' I think) he says
it is realistic to shoot for .8 to 1.0 hp per cubic inch in a street
engine. That gives a range of 100 to 122 for the 2.0 liter GT6 engine
versus 122 to 152 for the 2.5 liter stroked GT6 engine. With a header,
not very outrageous cam, and retuning the carbs you'll hit those numbers
and get a very nice street engine. If you try and go much above that
you'll start to sacrifice low end torque and driveability. By the way,
I don't know how much more displacement you'll get if bore engine to
its max oversize piston. There are some other things you can do to make
the engine run much nicer like balancing and perhaps moderate
blueprinting.
I'm researching this same topic at present. I'd be interested
in other people's mods too. Unfortunately, it is hard to quantify
performance increases without serious test equiptment.
woodruff@caen.engin.umich.edu
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