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Re: Rant
"fast Ed" <fast_ed@spamania.ca> wrote in message
news:T8Wvf.3705$H37.579924@news20.bellglobal.com...
> So Bill, here's a related question then, just to satisfy my curiosity and
> ignorance, without browsing through some dedicated 385 series forums.
What
> kind of HP can be made with a stock head 460, for a drivable street car?
My
> hypothetical parameters would be single 4V carb, ported stock heads,
larger
> valves if needed, cam with under .600" lift and 240 duration, 9.5:1 CR or
> lower, prepped stock rods with good bolts, prepped stock crank.
>
> I realize that some of the factory heads are real dogs. For this fantasy
> build, assume that I could get my hands on a set of D0VE heads, or
whichever
> are decent for a buildup. Are we talking 450 (ish) horsepower? Or does
it
> just make more sense to pop for the aftermarket heads like the CJs or
> Edelbrocks? Will a 460 as described above survive a 125 or 150 shot of
> nitrous, assuming forged pistons, and a proper tune for the nitrous?
>
> Some day I'd like to do a 460 buildup, but I'm not sure what sort of
vehicle
> I'd like to have it in. LOL
>
>
> cheers
> TS # 27
> --
> Ed Nicholson
Even with unmodified C9VE or D0VE heads you could build a very respectable,
streetable 460 and with a basic, hyd lifter cam like you described of .550
lift and around 300 deg adv duration you're looking at a peak HP of around
435. Torque on the beast would outrageous peaking out at over 480 but with a
flat curve that was well over 400 at 2K RPM.
Ported heads are worth another 20-30 HP so figure this to be a very
streetable combo with stump pulling torque and a redline of around 6000. Put
it on the bottle and it'd be one scary mofo on the street.
A combination that Scott the Mad Porter over at Reincarnation Automotive put
together looks something like this:
429 or 460 short block. Factory passenger car conn rods..
C/R from 9.0 to 1 to 9.75 to 1
non ported D0VE-C iron heads
edelbrock performer intake with holley 750 vac secondary carb
Factory dura spark distributor 14 initial and 24 centrifugal for a total of
38 degrees timing.
Comp dual energy cam 206 / 218 @ .050" lift. .497" / .502" lift on a 112
LSA. You can substitute the XE256 H in the comps extreme energy line. Just
be carefull of C/R
Factory exhaust manifolds with duals 2 1/4" and H pipe.
160 degree t-stat
Dual snorkel air cleaner.
Factory rail rockers converted to be adjustable.
Test done with a 3 x 14" K&N aircleaner
Combo will require 89 to 92 octane pump gas depending on C/R
Chassis dyno numbers are 454 pound feet @ 1,500 RPM and 260 RWHP at 4,500
Ported heads are worth 20 HP as are headers. This is a high torque stump
pulling combo. A 460 engine can use the next larger cam the XE262h I built
this and drove it. It rocks...
--
TS#10
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