Differences between 71 and 72 engines?

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Re: Differences between 71 and 72 engines? [Re: feets] #1691780 10/29/14 01:29 PM 10/29/14 01:29 PM
Joined: Jun 2006 Posts: 5,163 CT GTX MATT master
GTX MATT master Joined: Jun 2006 Posts: 5,163 CT	Quote: Any idea what the cam specs for the 440-4v are for 71 and 72? From what I've been told the cam specs didn't change from the mid 60s through the end of production, non HP engines still used the same cam 260/268 Duration, 0.425"/0.435" lift. HP cams were still 268/284 Duration, 0.450"/0.458" lift. There is a lot of fuzzy and cloudy info on these engines, but this is what I've been told (here and other places) and it seems logical. The published specs even differ from source to source on the early engines regarding the lift on the HP cams (some say .458, some say .465 lift). I'm not sure if they ever moved the cam timing around, not that they degreed them anyway. I believe the only significant difference on the later engines should be compression ratio. Head/intake part numbers changed, and they used TQs, but as we know all the heads and intakes flow basically the same in stock form. Also, I've never seen a later set of HP exhaust manifolds, anyone know what those look like? Were they even any different? Did the later HP engines use a windage tray? Last edited by GTX MATT; 10/29/14 01:45 PM. Now I need to pin those needles, got to feel that heat Hear my motor screamin while I'm tearin up the street

Entire Thread
Subject	Posted By	Posted
Differences between 71 and 72 engines?	feets	10/29/14 12:58 AM
Re: Differences between 71 and 72 engines?	RodStRace	10/29/14 03:36 AM
Re: Differences between 71 and 72 engines?	DaytonaTurbo	10/29/14 03:51 AM
Re: Differences between 71 and 72 engines?	Dan Halen	10/29/14 03:50 AM
Re: Differences between 71 and 72 engines?	poorboy	10/29/14 03:50 AM
Re: Differences between 71 and 72 engines?	Kern Dog	10/29/14 07:25 AM
Re: Differences between 71 and 72 engines?	moparmarks	10/29/14 03:15 PM
Re: Differences between 71 and 72 engines?	72roadrunnergtx	10/29/14 05:01 PM
Re: Differences between 71 and 72 engines?	feets	10/29/14 05:32 PM
Re: Differences between 71 and 72 engines?	dogdays	10/29/14 06:36 PM
Re: Differences between 71 and 72 engines?	moparmarks	10/29/14 06:36 PM
Re: Differences between 71 and 72 engines?	moparmarks	10/29/14 06:46 PM
Re: Differences between 71 and 72 engines?	feets	11/01/14 07:01 PM
Re: Differences between 71 and 72 engines?	GTX MATT	10/29/14 07:00 PM
Re: Differences between 71 and 72 engines?	Woody	11/01/14 02:22 AM
Re: Differences between 71 and 72 engines?	71birdJ68	11/01/14 03:51 AM
Re: Differences between 71 and 72 engines?	feets	10/29/14 04:54 PM
Re: Differences between 71 and 72 engines?	GTX MATT	10/29/14 05:29 PM

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