The 262HR states that it "may" require computer modifications.
The 264HR states that it "will" require computer modifications.
(Bottom of p. 122-123)
<A HREF="http://www.compcams.com/catalog/122_123.html">Click here: COMP Cams
Catalog - Chrysler 273 - 360 ci 8 cyl 1964 - 2000</A>
If you decide to go with the bigger one and you don't have enough
vacuum, you can always install a stroker crank or Bernds little
black box.
What mods are planned with this cam change?
Good luck
> Whilst searching the compcams website I came accross a grind which I have
> not seen mentioned on the list. This cam has .480 intake and .512 exhaust
> lifts respectively. It's advertized duration is 262 intake and 264 exhaust.
> These duration figures are very close to the MP grind which makes me think
> that this may be an emissions legal cam. Does anybody on the list have any
> experience with this cam? It appears that this may be a good bottom end
> torque cam with more mid range HP than the MP cam. Compcams also lists a
> 264, 274 duration cam with .512 on both intake and exhaust but the duration
> at .050 is 210, 220 which is probably a little too much even for the MP
> computer. Any thoughts? Pete.
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