Thread: HV3 Knowledge - Let's learn something

people still buy these?

yeesh talk about a waste of $

Well maybe if bill would make a thread on the poor mans hv3, people wouldn't be buying them lol.

And why are dormans l36 uims junk? Stock is junk too.

I wish I had a picture of the ones I've had in my posession, but I know for a fact the L36 one was black and the L26 one was red. Whether that's intentional to differentiate or just the colors they happened to use is still anyone's guess without more input. I trimmed the L36 one to fit an L26 but I personally thought the fitment was wonky. In spite of trimming very little at a time, there were always some gaps on a few cylinders, but maybe I'm just bad at trimming them :P

And damnit Bill, I wish we could do a dyno comparison of your DIY HV3 versus the real thing to actually convince people to stay away from them. It's quite a lot of money for a hunk of plastic, I'd have never gotten mine if I didn't get it used for super cheap. As far as NA 3800's go, I think even basic mods should only be bought at a fraction of their price. Topswap or go for mpg.

all you do is bellmouth the lim port openings with a rotary grinder or a hand file and throw out the port inserts

the extra 3/4" of port length the hv inserts adds doesn't do much for tq, and many that run em are turbo so port length is practically a non-issue in terms of the power band.

Originally Posted by HighOctaneRacing

stock is certainly a stronger type of plastic than the ****box dorman one and the revised GM is way better. If you ever have the chance, take a Phillips screwdriver and just start stabbing the OE one and then a dorman one and see what happens. I did this in a junkyard to see if a GM tech was bull****ting and he wasn't.

Well I haven't tested dorman's, but I did try smashing the old stock one and couldn't. I threw it on the ground, and hit it with a sledge and it didn't break lol. BUT the egr and coolant port area was my main concern.

Alright. Did some research and found some interesting stuff. The photo I was talking about isn't on ZZP's website anymore but found it on google images.

If you look to the the right of each HV3 in the photo, you'll see a transparent text saying Series 3 on the red one and Series 2 on the black one.

L26 vs L36 by K H, on Flickr

here's some extras just to get a different angle

L36 HV3 by K H, on Flickr

L26 HV3 by K H, on Flickr

There is 2 good pics of it assembled here in post #14
http://www.grandprixforums.net/threa...4-hv3-question

I stole this one here from http://www.impalaforums.com/diy-do-i...36-engine.html

Dude has a bad ass t-shirt too lol

L26 HV3 Installed by K H, on Flickr





During my research I happened to find this post by Bill and had to take a screenshot of it. I wonder why Bill said this because it seems he knows that there actually is a difference....

Bill HV3 by K H, on Flickr

Originally Posted by BillBoost37

The other night I was talking to HighOctaneRacing aka Kyle and he was telling me that the L26 HV3 is one color and the L36 one is another color. One red and the other black. I don't remember ever hearing this and remember there was an HV1, HV2 etc etc and believed the different colors were simply one of the other versions or the color of crap that was used for the run.

Please.. fill me in..

The screenshot was taken from this thread and it's a very good read. http://www.grandprixforums.net/threa...-gears-LT1-MAF




Thanks Guys!

Hmm. Well then when it's time for mine I'll use the revised GM one. hope I don't end up with the old GM one.

Lol thanks. Gj on all the stuff you did manage to find on the hv3, I can never find what I want on the search here.

So would someone actually be able to make a DIY HV3 thread? Something I'd be interested in if it meant spending a day in the garage.

So do you just mod ur old hv3 to get it like zzps??????????

For an n/a car: ghetto removal of the stock runners<DIY bell mouthing<HVII<HV3

There was a dyno comparison between the HVII (High Velocity Intake Insert) and the HV3 back in the day. It shifted the peak RPM to the left a couple hundred rpm and had some midrange gains. Not really a big surprise. A pushrod v6 doesn't need a huge plenum and super short runner length.

Thanks Mike..

Kyle, Mike's the kind of guy to have tried each and every combo. Hell.. at one point he even did a vacuum pump. Reason why I asked at one point was probably someone that I knew was looking for one. Hell...I've even bought a couple when I thought about doing various setups in the past. This isn't the only 3800 I've owned, it's the 7th Regal. Yes, I've had 7 Regals.