DeTomaso Mailing List: September 97, Message #116
     



From: Dan Jones <djones@thunderbolt.dfrc.nasa.gov>

Subject: Re: strokin'

Date: Wed, 3 Sep 1997 13:34:48 -0700 (PDT)



> With all of this talk of stroking has me thinking (smell the wood burning?)

> Lunati recently announced the street racer 4340 steel rod for only $400.

> This is a good deal for rods.  The only problem is that is a Chevy, gasp,

> rod.  I have heard of using a Chevy 5.7 rod and stroking the cleveland.  Any

> one have any ideas on this and any particulars.



Super Ford magazine did a 351C intake manifold comparison several years

ago and the test engine used 5.7" Chevy rods.  It displaced 377 cubic 

inches and consisted of a stock crank offset ground from 3.5" to 3.7"

stroke.  The rod journals were offset ground from the stock 2.311" to 

2.1" and widened to 1.9" to accomodate the 5.7" Chevy rods.  Also, the

rod small ends were bushed to the Ford 0.912" pin diameter and fitted 

with L2348F TRW domed forged pistons (1.645" compression height resulting 

in 0.005" deck clearance).



With 4V closed chamber heads (light chamber and port work, 64 ccs,

resulted in 12.5:1 compression), a big roller cam (Madden dual pattern

roller CT5 - 264/270 degrees duration @ 0.050" lift, 0.723 inch lift),

and a Holley Strip Dominator single plane intake the engine made 498 HP

at 6250 rpm and 435 ft-lbs at 5000 rpm.  The best dual plane intake, a

Ford Power Parts 4145, made 490 HP at 6250 RPM and 425 fl-lbs at 3250 RPM.



Personally, if I were going to the trouble of stroking the Cleveland.

I'd want either more cubic inches or a longer rod.  Dave Williams worked

up a few possible combos a while back (though he still prefers using 

a 400 block with a smallblock bolt pattern and intake spacers to fit 

a 351C 4V intake).  Note these numbers assume a 0.040" overbore (I'm using

an Aussie block):



 351C crank, KB112 pistons, Chrysler rods, 3.64 stroke = 373 CID



 400 crank, 1.14 pistons, Chrysler rods, 3.88 stroke = 398 CID



 400 crank, 1.14 pistons, Olds rods, 4.120 stroke = 422 CID



 351C crank, 1.14 pistons, 6.200 Eagle rods, 3.71 stroke = 380 CID



Later,

Dan Jones



Later,

Dan Jones



P.S. If you responded to my post on header design, I probably missed it.

Our mail server had hardware problems a week ago and only recently came

back up.  







==============================================================================