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rdane rdane is offline
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Join Date: Oct 2002
Location: East side
Posts: 4,680
Actually, your whole torque range is probably elevated compared to original engine but starts tapering down at high revs when heads cannot flow enough.

The increased torque range was given going from a 3.0 to a 3.356l (3.4). Torque at 2500rpm on the 3.4 is 175#. Max torgue at 5500rpm on the 3.0 was 168.

If you graph the two engines the 3.4 leaves a max of 8 to 10 hp on the high end of the rev range but doesn't drop off as sharply as you close in on 7K rpm as the 3.0 did. The torgue drops off 500 rpm sooner but graphed leaves a good 25# in comparison to the 3.0. I have 250# of torgue by 4000rpm which happens faster than some of the stock 3.6s and it stays there till 5200rpm so I am not complaining.

So the question is would keeping the same cam to clear the MM P&Cs and replacing the CIS with Motronic or a Varioram system
add much to the rev range, the HP or Torgue? How about head work? These are '79 heads btw.

SSIs and a Danke 2/2 are the exhaust.

What is the ultimate set of upgrades in induction and head work to help out my cams and P&Cs?

Last edited by rdane; 08-05-2004 at 10:29 AM..
Old 08-05-2004, 09:05 AM
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