:) .. weeeell ... I suppose I could elaborate a bit.
I installed the Cams and intake separately so I could judge the gains from
each mod (most people do them both at once). I did the cams first, then the
intake.
As for the cams, they were incredibly straight forward to install. I
followed instructions I downloaded off the Speedtweaks site in the tips and
tricks section (Thanks Bernd & Tom!). I got a picture and dimensions of the
wedge tool from someone on the web (maybe even a DMLer - Glen I think his
name was) and then made my own out of wood (which I wrapped in a plastic bag
to avoid wood chips in the engine).
The only snag with the install was the driver's side valve cover was a HUGE
pain in the a$$ to get off. Took close to 3hrs of just pissing around.
Once I got it off once though, it was a snap to get on and off again. Lots
of guys remove all sorts of stuff like the fuel rail, power steering pump
etc etc to get it off, but I didn't have to in the end. After that, it was
all smooth .. except my buddy grounded the alternator to its housing when he
hooked it back up (had to disconnect the wire to help move the wiring
harness outta the way of the driver's side valve cover). That blew a
fusible link no biggy.
After the cams were in ... initial reactions was :-o!!! I drove around for
a few weeks with just the cams. Great low end gains. good mid range gains,
maybe a bit of top end loss. If I was idling around in first gear (or even
second actually) then put my foot through the floorboard, the tires would
light up every time. it was great!
The cams took .15-.25 seconds off my G-Tech times but made runs really
really inconsistent due to traction issues. Also got a 15hp G-Tech
horsepower increase. Gas mileage went up a bit too if I drove nice.
Next I did the intake. Suprisingly easy to do as well. Only took a few
hours from parking the truck in the garage to firing it up again. One snag
that was my own fault, I forgot to hook up the vacuum line in the back of
the manifold. Fired it up and there was a loud sucking noise .. shut the
truck off and found the problem without any troubles. Fired it up again,
then went for a test drive.
Reaction after the intake was also :-o!!! The engine would readily rev
right up to the 5000RPM range without even hesitating now. ... the downside
though: most of that low end TQ gain from the cams was gone. It's still
better than stock, but there was a definite loss after the intake.
G-Tech times are now MUCH more consistent (within .1 seconds each run,
versus a .3 second spread with just the cams). This is because it is much
easier to launch now. Average G-Tech times didn't really change much though
(to my dismay) after the Intake. maybe gained a tenth at best. G-Tech
horsepower also didn't change much .. gained 1-2hp average, but I wouldn't
even beleive for a second that the G-Tech is that accurate.
Conclusion:
The intake would work much better with a more aggressive cam (KRC's new one
for example) if you're looking for a TQ peak around 3500-4000RPM. With the
HO cams though, I don't think its a very good combination. basically, I
think the cams are designed for low end TQ, but the intake is for higher RPM
gains. put them together, they almost kill eachother. If I had the
time/effort, it'd be interesting to see what just the intake alone does with
the stock cams. I would guess that would be a faster combination with more
high end hp.
Either way you look at it though, the HO cam/Intake combo is still much much
better than stock. Hands down the best mod so far.
My advice:
If you're just going to tow, install the HO cams only.
If you're looking to go faster, try just the intake and see what it gains
you. Then install the cams after.
Realistically though, for just over $300 for the ENTIRE combo, you can't go
wrong. I've wasted that much money on one good night of drinking!
Sorry for the book ... but you asked for it! ;^) I'm sure that's more than
you ever wanted to know.
Any more questions, feel free to ask.
-- Canuck -------------------------------------------- Y2K, 4.7L, 2wd, 5spd, The Ultimate K&N HomeBrew, Flowmaster CatBack, Home Ported TB, Electric fan conversion, 180 therm., Redline synth., IAT adjuster, HO Cams, HO Intake http://www.twistedbits.net/WWWProfile/dakota/Vyikam1jjgNN6"Art DiRamio" <ADiRamio@opensolutions.com> wrote in message news:CD14A5E5DC40D611930E00508BDC9E4E47BC1F@exchange.opensolutions.com... > > No, No, No... > > You can't just say you've done it, you need to provide details! (well, you > can, but that's just plain mean ;^) ) > > I see you did the cams too. How'd it all go? Are you happy? Any issues? > > Inquiring 4.7L drivers need to know > > Art DiRamio > '01 Patriot Blue QC Sport+ Auto HD 4X4 > 4.7L 3.55s Penda soft tonneau > '97 Kawasaki Vulcan Classic 1500 > > > > -----Original Message----- > From: Canucker Trucker [mailto:flamindakman@yahoo.co.uk] > Sent: Friday, November 08, 2002 12:15 PM > To: dakota-truck-moderator@bent.twistedbits.net > Subject: DML: Re: 4.7L HO intake manifold > > > I've done it. > > -- > Canuck > -------------------------------------------- > Y2K, 4.7L, 2wd, 5spd, The Ultimate K&N HomeBrew, Flowmaster CatBack, Home > Ported TB, Electric fan conversion, 180 therm., Redline synth., IAT > adjuster, HO Cams, HO Intake > http://www.twistedbits.net/WWWProfile/dakota/Vyikam1jjgNN6 > > > "andy levy" <andylevy@yahoo.com> wrote in message > news:aqevvj$8ti$2@bent.twistedbits.net... > > > > Just learned that the 4.7L HO manifold can be purchased separately, much > > like the HO cams. Anyone currently on the list done this? Yes I have a > > 318, I'm just curious about it is all. > > > > NOTICE: This e-mail is intended solely for the use of the individual to whom > it is addressed and may contain information that is privileged, confidential > or otherwise exempt from disclosure. If the reader of this e-mail is not the > intended recipient or the employee or agent responsible for delivering the > message to the intended recipient, you are hereby notified that any > dissemination, distribution, or copying of this communication is strictly > prohibited. If you have received this communication in error, please > immediately notify us by replying to the original message at the listed > email address. Thank You.
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