1971 Plymouth Roadrunner (MOPAR)

[patmckinneyracing]

No, I am talking about the origional series. That's why I used the key wording when I was describing Daisy as "Was pretty good looking". I was not referring to the new one. Maybe its cause I used the word "movie" which threw you off. I may be young but I have the whole origional series on DVD.

 

[85 Cutlass Brougham]

OK. I saw the word movie and that's what threw me off.

 

[patmckinneyracing]

With my car though, I am starting to plan the build on the engine. I'm going to go with a slightly larger cam but nothing too radical. I was advised that since the car is a 4 speed and will have Air conditioning (supposedly plays a big factor on a 4 speed), that I should go with only a slightly larger than factory cam. Thing is I can't get anyone on moparts to tell me what the factory lift was on the factory high perf. 383.

 

[Munkey B]

Daisy Duke is the main reason I fell in love with the 71' Roadrunner. The only thing that bugged me was that her car was painted lemon twist which was a 70' RR color, but its a movie and she was pretty good looking back then lol.

actually, that car was a 72 that appeared in the first couple episodes.
the rest of which it appreared was the 73-4 bodystyle.

 

[patmckinneyracing]

Well I haven't watched the old episodes in a few years and I know more about roadrunners now than what I did then. Besides her, I always wanted to have a car that looked similar to Richard Petty's Roadrunner. Luckily I found an actual bird that is the same body as his.

 

[85 Cutlass Brougham]

With the cam, the lift is not the only deciding factor. I would also pay attention to the lobe separation angle as it has a big effect on idle quality. What it is is the angle that separates the exhaust and intake lobes, and it affects the overlap of the cam, and consequently, the low RPM cylinder pressure and dynamic compression. Most aftermarket cams have around a 110 degree LSA, but a larger value, like say 114 degrees, will trap more cylinder pressure at lower engine speeds and improve driveability. Keeping that in mind, look at some of the more modern cams, like the Comp Xtreme Energy line as they tend to have better driveability if you pick the right one. My suggestion would be the XE 268 and is based on my experiences with the XE262 in my 355. Great all around cam with loads of vacuum at idle and torque where you use it most.

 

[Coveted]

ima have to change my avatar haha

 

[pokertramp]

It is also similar to the Road Runner or Sport Satellite that Daisy Duke drove on The Dukes of Hazzard before she got the Jeep.

Shi*, I don't remember that,,, I used to watch it on a 12 inch black and white TV, that's all my parents could afford back in the early 80's.

I should buy all the episodes on DVD.

 

[maliburacinfreak]

if i were to ever own a nopar, that would be the car. always thought that front end looked meaner than hell!

 

[patmckinneyracing]

I have taken the lobe separation into account when deciding what cam I'm going to use. I found out that the factory cam in my motor has a lobe separation of 115 degrees and a lift of .450. I don't know what these cars could run in the quarter with a 4 speed, but I know most could pull 13 to 14 seconds from the factory. Will the XE268 work on a big block 383 chrysler motor though?