Join Date: Jun 2001
Location: Sluis, Zeeland, The Netherlands aka Holland
I am still trying to figure out what to do with the engine of my '67.
I have to build a new engine because the stock 305ci is kinda slow. I thought of building a 383 twin turbo (never enough of hp/tq). If I don't exceed the 3000-3500 rpm I'll just drive a 383, and when I need it, I have the extra power. Point is that turbos are very easy to find here in Europe, but roots and superchargers are almost impossible to find. Shipping one in from USA will cost me double the price of the part(s), so shipping is not an option.
As I start building the engine from scratch, I can save money and buy a better part (suitable for 750+hp) then a part suitable for 500hp. I don't think the price will be a very big difference between them (correct me if I'm wrong).
The headers I will make myself, so that won't be a problem. I know that e.g. Holley makes carbs for blow-through applications, so that won't be a problem also.
I was planning to build the 383 engine with everything forged and suitable for many horses (800-900?) BUT I will build it without turbos so the engine then has a CR of approx 8.0:1
I guess that the 383 then will have something like 300(350?)hp without the turbos and so my th350 and 10bolt will survive. When I finally saved all the money I need, I can upgrade the tranny and rearaxle.
Here's my problem: Which mods do I need to do besides better brakes (I got the 4 piston discs in front), better cooling, subframe conn.?
I would set the turbo on low boost (solenoid for setting the wastegate inside the car...variable boost), so that I'll drive with not that much hp (500), and it would be still streetable.
Do I need to do heavy mods on the car to make it stiffer, and if so, what do I need to do?
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