HOT ROD convinces Mystery Motor owner Tom McIntyre to bring his 52-year old prototype 427ci Chevy big-block engine built for NASCAR racing to the engine dyno. We spin the 427 to more than 6
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00:00 (engine starting)
00:02 (tires screeching)
00:05 (engine revving)
00:08 (engine revving)
00:36 - This engine came from Smokey Eunick,
00:39 who was the one who actually removed the engines
00:42 from the car after its race in 1963.
00:47 Where did it come from exactly?
00:50 You know, I don't know that Smokey Eunick
00:51 had control over all the engines,
00:55 but we do know that he removed these engines
00:57 from the two Mickey Thompson Stingrays
00:59 and kept those engines at his facility.
01:03 I found out that he did in fact have a mystery motor,
01:07 a Mark II.
01:07 I had the car that it went in,
01:10 and I felt that it would be really important
01:14 for the car and the engine to be reunited.
01:17 - Just a stock MSD distributor in it
01:21 that I know that I've run before,
01:23 just that I know works.
01:25 - Now for historical purposes,
01:27 we've decided that it's time to put the two pieces together
01:30 and make the car available for people to see.
01:34 And I think it's gonna be a real interesting thing
01:36 for people to actually realize where this thing came from
01:40 and what it did and see its history.
01:43 - You know, we've talked about whether or not
01:45 we're gonna do power pulls or whatever.
01:47 It's gonna be hard for me not to do a power pull
01:48 because that's what I do.
01:50 And I know about how much horsepower
01:53 this motor's supposed to make.
01:55 But as I'm going through this whole process,
01:57 I'll be able to tell whether or not it's safe to do that.
02:01 And so at that point, we'll make a determination
02:03 as to whether or not I actually wanna push the handle down
02:05 and see what it's gonna do based on your decision,
02:09 and then we'll go from there.
02:11 - Okay.
02:12 - That's the process. - That sounds great.
02:13 Let's get started.
02:15 - Okay, let's go.
02:16 (engine rumbling)
02:19 (engine whirring)
02:22 - All right, turn the water on.
02:35 (engine whirring)
02:38 And as you can see, at 5,500, the power's still going up.
02:48 (laughing)
02:50 - It's a big, long turbo, what?
02:52 - That's our peak torque right here.
02:53 So the torque is actually starting to fall down.
02:55 As you can see, the numbers are coming back down.
02:57 But because of the math that's involved in horsepower,
03:00 the power's still going up.
03:01 So right after 5,500, it's gonna start rolling back over.
03:06 After everything I've seen so far,
03:08 we should be able to take it to 6,000 without a problem.
03:11 That's, of course, that's up to you.
03:13 If you wanna go to six, we'll go to six.
03:15 Let's go to six.
03:16 (engine whirring)
03:19 446 horsepower.
03:29 And it just started to roll over at 5,700 RPM.
03:32 - Yes.
03:33 - I was guessing 425.
03:36 Obviously, Smokey did a few things
03:37 to make this one a little bit better.
03:40 - It's a little lean.
03:41 - Not for a Chevrolet.
03:43 (applause)
03:45 - It does sound sweet.
03:52 - It sounds great.
03:53 - Yeah, I'm real excited.
03:54 And really pleased that Hot Rod Magazine could be here.
03:58 - Well, congratulations.
04:00 It looks like you have a nice piece.
04:02 I think you're gonna have fun with the car.
04:04 - I think so, too.
04:06 [BLANK_AUDIO]