I have only had the car to the track once with this motor and it ran 11.01 124.6 mph. I do not have any idea as to how much power it is making but a good guess is around 625-650. For regular street driving 93 octane pump gas and a quality octane booster have worked well. The spark plugs and valve lash are routinely checked. It holds 60-70 psi oil pressure at cruising rpms ( 3,000 rpm ) and 20-30 psi at idle ( 950 rpms ). So far the engine has around 400 miles on it and is doing well. Ported Victor intake Pro Systems 1350 cfm SV-1 carb Comp Hi-Tec stainless rocker arms, 3/8 pushrods and Jomar stud girdles. Professionally ported and polished TFS Street heads done by Scott Johnston of RHP in Seattle WA with 2.25 / 1.76 stainless valves, Comp Springs, titanium retainers. The passenger side lifter bores are bushed to improve oiling, other items used are a Canton deep sump oil pan, Melling HV oil pump, Romac billet double roller timing set 690/.700 lift Comp Endure X roller lifters. Comp Cams XR304 solid roller cam 266/272 duration 0.050 lift. The engine is a 545 ci BBF built in 2007 with a forged 4.5 stroke crank, Eagle 6.8 H beam rods and 0.030 over custom Diamond pistons 12.25: 1 compression. Here is what the seller has to say about it: CLICK HERE TO VISIT THE ORIGINAL AD It’s a big beast Pro Street 1978 Thunderbird that we think would be a bitchin ride to take cross country. This thing is not a show car, nor is it a trailer queen. It is perfect for Rocky Mountain Race Week! The owner is confident it will run in the 10’s as is, and were pretty sure that some spray would make this thing a deep 10 second if not 9 second runner. Was it a real deal Pro Street machine? Or just a big tire with nothing to back it up? Well it turns out that this giant beast does in fact have some stones to back up the big 32×17.50 Mickey Thompson ET Streets as it has been down the track in 11.01 seconds at almost 125 mph and that was just a shakedown pass. But at the same time, the lines somehow worked and we were intrigued. When we first saw this Pro Street 1978 Thunderbird the first thing we thought was “WTF?”.
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