61Impalafam
New Member
Hello fellow big block owners! I've had my 1961 Impala four door sedan for about 4 years now and am finally starting to seriously looking into restoration and also since I will be pulling the engine and transmission to freshen them up from years of neglect pryor to me obtaining the vehicle. The car has a 348 paired with a Turboglide direct drive transmission. I am looking into a mild engine build while I have it out, but I definitely want to keep the engine as original as possible by getting a .030 over bore and dropping in a 409 crankshaft with aftermarket pistons and rods but keeping the stock intake manifold and heads. I am unfamiliar with the Turboglide transmission and there doesn't seem to be much info out there about it. How much more Horsepower can I put to it without having to change to a Powerglide? The only information I found online, is that from the factory any of the 348 engines that made 280 horse or more came with the Powerglide. I'm not sure how much horsepower I would gain by just stroking it with a 409 crank and .030 overbore. Looking forward to having lots of discussions with you guys! Any help would be appreciated or at least point me to an existing thread that might give me some answers???
You have made it, to the right place, for 348-409 knowledge.
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