John, I just sent a 68mm TB to Hughes Engines for flowbench testing. I'll have some results in a week or so. Hughes flowbenched my 65mm last fall, and the info is on their web site. www.hughesengines.com
After they get my 68mm TB done, then we'll know where we stand. 3mm is a big difference, it does'nt sound like much!
Bruce may have already flowbenched a 65mm VS. a 68mm??
Matt Y2K-HEMI
'00 RC 4.7L 5 spd
In a message dated Fri, 9 Feb 2001 2:50:28 PM Eastern Standard Time, John Clawson <johnc@asltg.com> writes:
<< I guess, in a sense, they might have as a result of more than one change
in specs. I understand that all '01 4.7's have precats(not all 00's
did). Also the new tb. Possibly more?, Don't know.
I guess the reason I'm asking is because I don't have a feel for the
difference in air flow(cfm or whatever) for a 3mm difference in tb
throat size. Doesn't seem like much.
FWIW, its only an interim step anyway as I've got my eye's on Bruce B's
billet tb along with matched injectors, etc. If nothing else it will
make cleaning stock tb's a little easier(install a clean one and take
your time soaking and cleaning another one)
Just curious.
jc
00 Sport,cc,4.7,4X4,auto,3.92sg,
Quickd air,Flowmaster,180 tstat,Jet II
> Shouldn't the horsepower/torque specifications for
> the 2001 model year truck increase due to the larger throttle body?
>
>
>>
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