You CAN build an OHC motor for torque.... but the advantage to OHC is more
rev potential.. so why go to OHC unless you're going to use it? they
definately have the potential for more HP, at the expense of bottom end
torque... but if you've got an Automatic, that's what they make high stall
converters for. For 5-speeds, it can get a little sticky juggling getting
into the powerband off the line without smoking the tires... low gears and
lighter weight helps
Gary Shook
Penrose, CO
>Yea, NASCAR, state of the art racing... NOT! Guess we all better dump the
>fuel injection, get the carbs back out, and disconnect the computer! NASCAR
>runs pushrod motors 'cause the rules say 'ya have to...
>
>Oh yea, speaking of "pushrod" race motors, remember that at Indy (back when
>it was real racing not the IRL crap) there was a displacement premium for
>pushrod motors 'cause they were at a disadvantage compared to their OHC
>counterparts...
>
>Craig
>Just ask the guys in NASCAR Winston Cup what they think of their "wussy
>little pushrod engines" vs. Cammed engines found in say F1 (15K rpm) or
even
>CART. Bet they'd take the torque over carpal tunnel syndrome from fanning
>the gearbox!
>Bob
>-----Original Message-----
>From: SuperNagz@aol.com <SuperNagz@aol.com>
>To: dakota-truck@buffnet.net <dakota-truck@buffnet.net>
>Date: Monday, July 26, 1999 7:16 PM
>Subject: DML: 4.7L vs. 5.2L settled!
>
>
>>3 words to settle the 4.7L vs. 5.2L debate:
>>
>>4.6L vs. 5.0L
>>
>>I hate to bring up Fords.. but, all in all.. a motor is a motor... more
>>specificaly.. a pushrod motor is fairly similiar to another pushrod..
and..
>a
>>cammer to a cammer (single)
>>
>>Anyways, Dodge is now doing what Ford did a few years back. (needless to
>say,
>>this is WHY I started buying Dodge)
>>
>>Pushrods will always be superior to cammers when it comes to heavy
>>vehicles/trucks, and/or performance machines.
>>
>>The Ford 4.6 that replaced the 5.0 was only good for two things... fuel
>>economy, and part complexity reduction- Ford replaced nearly all their
big
>>engines with overhead cammers with many interchangable parts)
>>Those two things mentioned above are great for the car company... saves
>them
>>money, and makes them look good on the fuel economy.
>>
>>When it comes to performance... pushrod will just blow away the cammer
that
>>replaced it. Gobs of lowend power... and we all know that thats all that
>>matters. Who cares if an overhead cammer has say 250 hp at 6,000 rpms...
>>think about it.. that engines STILL has to rev across that entire
>>underpowered rpm band to get to that high peak rpm.
>>On the otherhand... the pushrod monster has instant power off the line...
>>sure... a pushrod will run out of steam sooner than the cammer.. but who
>>cares, by then, you've shifted to the next gear, and your back at your
>lower
>>rpm/monster power range
>>
>>
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:15:17 EDT