Engine value
Thread Starter
Burning Brakes
Joined: Jan 2009
Posts: 1,045
Likes: 15
From: El Mirage, Arizona
Engine value
I know this sounds like a very open ended question, but here goes. What would a 1983 4.7L running with 73K miles engine be worth? Excellent condition, non leaker, non smoker, New TB, service history, no issues. Currently in car driven regularly. 
Race Director
Joined: Sep 2007
Posts: 12,162
Likes: 383
From: Johnson City, TN
If it could be proven in the sense that the buyer could hear it run, plus service history, I think that's much more desireable that the typical buy on faith. If I needed one, perhaps $1000.
Thread Starter
Burning Brakes
Joined: Jan 2009
Posts: 1,045
Likes: 15
From: El Mirage, Arizona
Odd that an engine that cost so much to rebuild has so little value. But it is.. what it is. Anyway the reason I was asking was this.
I really like this car but it has a major drawback...... It needs more horsepower... I have been looking at options like SC and Turbo setups both with premium prices (5-7K) and also a LS1 conversion from Renegade. I`m a bit leary of throwing 5-7K at this engine because of the cost to rebuild should it go south on me. I could get more bang for the buck with the LS1 but then again it would not really be a Porsche would it. Any comments from those who have gone the pressure or conversion route are appreciated. Can this 4.7 live happily with a pressure system or will it become a money pit. Thanks
I really like this car but it has a major drawback...... It needs more horsepower... I have been looking at options like SC and Turbo setups both with premium prices (5-7K) and also a LS1 conversion from Renegade. I`m a bit leary of throwing 5-7K at this engine because of the cost to rebuild should it go south on me. I could get more bang for the buck with the LS1 but then again it would not really be a Porsche would it. Any comments from those who have gone the pressure or conversion route are appreciated. Can this 4.7 live happily with a pressure system or will it become a money pit. Thanks
Addict
Rennlist Member
Rennlist Member
Joined: May 2001
Posts: 2,758
Likes: 0
From: Wilbraham, MA
I really like this car but it has a major drawback...... It needs more horsepower... I have been looking at options like SC and Turbo setups both with premium prices (5-7K) and also a LS1 conversion from Renegade. I`m a bit leary of throwing 5-7K at this engine because of the cost to rebuild should it go south on me. I could get more bang for the buck with the LS1 but then again it would not really be a Porsche would it. Any comments from those who have gone the pressure or conversion route are appreciated. Can this 4.7 live happily with a pressure system or will it become a money pit. Thanks
You will quickly get advice about getting the car, and making sure it is working properly before going FI. It will be good advice, as many 928s have deferred maintenance issues.
Drifting
Joined: Dec 2004
Posts: 2,235
Likes: 2
From: Atlanta
You're absolutely right and I'm in the same boat...er...shark. Problem #1 is the cams, solve that and then worlds open. I have a small cam tower leak on the driver's side which will require pulling the cam tower to fix. If I'm going that far, the old cam will not be reinstalled and I'll look to either euros or Carl's custom grinds, depending on how flush with cash I am. My car dynoed at 180-ish at the wheels not that long ago. I've since installed a Motorsports Y-pipe, but haven't returned to the dyno due to other issues. However that, plus euro cams should be good for 240-ish at the wheel. Carl's might be worth a bit more. To really get to where I want (400) will take a lot more. There are two possible ways to go from there. Full euro intake and heads to open the breathing up plus Carl's supercharger, or DR's twin screw setup which takes the intake out of the equation but will cost about the same all-in as the first option. I'm with Carl, the heads on the 4.7 should support a lot more power if the intake allows it. I'm not sure which way I'm going to go, and the market has to recover before I start down the road. But cams are first, hope to do that soon.
