Thanks for the tip.
Some info on the 4.7 PowerTech V-8:
The CAM is a mild one at .443/.429 18 deg overlap.
Valves are 1.89" Int/ 1.46 Exh
Heads: 64CC (semi-hemi shaped)
Needle Bearing Roller Rockers
-----------------------------------------------------------------
Steven St.Laurent
Test Engineer
Test Branch, GSD,MCTSSA
MARCORSYSCOM, US Marine Corps
mailto:stlaurents@mctssa.usmc.mil (work)
mailto:Saint1958@home.com (home)
Office: (760) 725-2296
-----Original Message-----
From: Steven T. Ekstrand [mailto:cyberlaw@earthlink.net]
Sent: Thursday, March 02, 2000 6:22 PM
To: dakota-truck@buffnet.net
Subject: DML: Re: No Pistons for 4.7
| Try else where. If they modified the 4.7 into a 5.4L then there has to
be
| someone done it.
Venolia or JE will custom make them for not much more than their already
outrageous prices. I prefer Venolia, but JE and Ross have served friends
well.
What I really wonder is any builder has started playing around with the
cylinder heads. With no push rods to worry about, I wonder how much room
there is to play with ports.
I haven't seen the combustion chamber design. I'm wondering how large of
valves you can fit without serious shrouding. Bumping up to a 1.92 intake
and 1.60 exhaust with a more aggressive cam and a little porting would be
interesting. Add headers, and hipo exhaust, bigger TB, and free flow
intake, and the 4.7L ought to be a real performance engine.
Same mods and an SC or NO2....hmmmmm!
Steve Ekstrand, Pasadena, CA Driver: '00 Dakota CC SLT+ 4.7L 3.92SG 255's
Stacey's Driver: '00 Inferno Red Intrepid ES-3.2L-24V Autostick w/Leather
Race Car: 69 1/2 Road Runner 440-6 (ex-NHRA SS/GA future B or C/SA???)
Project Car: 69 Barracuda Notchback (Orig. 318, now 360w/Edelbrock Heads)
Homepage: http://sites.netscape.net/professormopar/homepage
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