DeTomaso Mailing List: April 1997, Message #165
     



From: Rcerex@aol.com

Subject: 4.6 Liter DOHC

Date: Fri, 18 Apr 1997 17:04:01 -0400 (EDT)



Hidee-Ho neighbors,

I've wanted to do a 4.6 L swap in my Pantera and think that it's a good

choice for a buildup. Although the 3.554 bore and 3.55 stroke make for a

square "torquer" motor,  the crank sits high into the block yielding

increased rigidity(similar to the old Ford FE series of motors). A Cobra DOHC

motor is all aluminum giving a weight advantage; the motor also comes with a

forged crank. I am planning on twin turbo charging the motor the future,  the

stock cracked metal rods and hypereutectic pistons will need to be replaced.

I talked to Mark Sanchez at Advanced Engineering West ,  he has a kit which

consists of Cunningham "I" beam rods(4130 with 7/16" rod bolts), Arias

pistons (longer skirt for strength and beefier pin boss),  and Total Seal

rings for $2400. ARP is producing head and main studs- although at this time

they are not ready yet.The factory "stretch-to-yield" have got to go! The

only other prep work would be to Extrude Hone or port the heads(especially

the exhaust).Mark dynoed his motor at 565HP running 10lbs. of boost on a

supercharger. I also talked to Cory at Collector's Choice who was very

helpful;  he sells the exhaust and conversion components as well as ignition

systems to run the retrofitted motor.-Dave Lee