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So whats so bad about the GM Hot Cam?

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Old 05-14-2002, 11:12 AM
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Default So whats so bad about the GM Hot Cam?

I am just about ready to order this cam. I see positive and negative things about it. I've searched numerous boards and allot of people really like it. The only bad thing about the cam that I have read is that it makes about 10 horse power less than the popular cams. Why is everyone so down on this cam?

<small>[ May 14, 2002, 11:12 AM: Message edited by: Dustin98SS ]</small>
Old 05-14-2002, 11:33 AM
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Default Re: So whats so bad about the GM Hot Cam?

if you are planning head work, the lift is very low. true it is 10 HP down compared to other cams. i pulled 365 RWHP with just a few bolt ons and headers. the idle is pretty rough too. i like it for the sound and overall midrange power.
Old 05-14-2002, 11:39 AM
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Default Re: So whats so bad about the GM Hot Cam?

The main reasons why people don't like it is because like you said, it doesn't make quite as much power but it idles WORSE than larger cams. They're super cheap compared to other cams and I would have gotten one myself if I didn't find an awesome deal on a T1.
Old 05-14-2002, 11:48 AM
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Default Re: So whats so bad about the GM Hot Cam?

No complaints here..
Old 05-14-2002, 11:49 AM
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Default Re: So whats so bad about the GM Hot Cam?

Well, I'm no cam expert so I thought I'd get some of your opnions.

One question though. Can I reuse my gaskets when installing the hot cam?
Old 05-14-2002, 07:58 PM
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Default Re: So whats so bad about the GM Hot Cam?

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Dustin98SS:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Damian:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">One question though. Can I reuse my gaskets when installing the hot cam? </font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">If you have a 98, you can reuse everything but the water pump gasket. Most recommend that you go with the 99+ WP gasket, which is a rubber o-ring type and can be reused over and over.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Awesome. I do have a 98 SS. My goal is 400 to the wheels.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Go with another cam it will be easier.Like evryone said it is always 10hp less with worse idle.
Old 05-15-2002, 12:40 AM
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Default Re: So whats so bad about the GM Hot Cam?

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">One question though. Can I reuse my gaskets when installing the hot cam? </font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">If you have a 98, you can reuse everything but the water pump gasket. Most recommend that you go with the 99+ WP gasket, which is a rubber o-ring type and can be reused over and over.
Old 05-15-2002, 12:50 AM
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Default Re: So whats so bad about the GM Hot Cam?

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Damian:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">One question though. Can I reuse my gaskets when installing the hot cam? </font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">If you have a 98, you can reuse everything but the water pump gasket. Most recommend that you go with the 99+ WP gasket, which is a rubber o-ring type and can be reused over and over.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Awesome. I do have a 98 SS. My goal is 400 to the wheels.
Old 05-15-2002, 12:55 AM
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Default Re: So whats so bad about the GM Hot Cam?

I just saw a guy dyno his tonight and pull 366 with lid exhaust MAF and Mac Headers, not too bad. I know of a guy that is selling his MTI B1 cam for 350 and 450 with springs and retainers. E-mail me if you want it, it's a great cam
ls1matt@aol.com
Old 05-15-2002, 01:16 AM
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Default Re: So whats so bad about the GM Hot Cam?

Dustin, are you wanting 400 rwhp with stock heads? If so, definately take a look at one of the newer Thunder cams. Several of them having been pushing 400 RWHP with stock headed cars, and there are a couple to actually make OVER 400 with stock heads. Check them out!

Josh
Old 05-15-2002, 07:19 AM
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Default Re: So whats so bad about the GM Hot Cam?

here is some data from desktop dyno 2000
this is caculated data not actual of popular cams.
http://ls1info.com/article.php?sid=63

I have the hotcam. I like it , when I was doing
research for the cam , I needed a complete kit,
pace parts had a great deal on all gaskets,
crankbolt,hotcam kit $418 delivered ( tx ).
that was about 1 year back. I needed to go with
something with some reliablity and a known good setup due to the car had 4200 miles on it.
It also was my first cam install and I had many
concerns.. The idle can be tuned out with enlarging throttle blade to 15/64" or less and
adding shims on top of the idle set screw .022"
worked for me.. they call that the Trooper Mod.

hotcam+lid+catback 330/330
hotcam+lid+catback+SLP LT KIT 351/364

<small>[ May 15, 2002, 07:20 AM: Message edited by: TA_2001 ]</small>
Old 05-15-2002, 07:42 AM
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Default Re: So whats so bad about the GM Hot Cam?

loved mine while i had it, sounded good, gave me some HP. negatives,failed emissions twice with it,not as much power as i wanted from a cam.i also was planning heads so i picked a cam that was proven to play it safe.u will like it,i am just competetive & want to go faster than most people i know.i know i am not the fastest & can accept getting beat but nobody likes to loose.
Old 05-15-2002, 08:10 AM
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Default Re: So whats so bad about the GM Hot Cam?

Well, to answer some questions. I would like to get 400 to the wheels with stock heads. If I can just get close I may have my heads stage 1 ported. How much more power does the hot cam provide? 20 to the wheels? I am basically trying to decide between the T1 and the Hot Cam. My car is a daily driver so I need reliabilty also. I dont need to do single digit 1/4 mile times like some of you <img border="0" alt="[Burnout]" title="" src="graemlins/burnout.gif" /> Of course I say that now <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Old 05-15-2002, 09:43 AM
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Default Re: So whats so bad about the GM Hot Cam?

TA_2001,

I have Desktop Dyno 2000. It was given to me by a friend to see if I could make some sense of it. I have used actual airflow numbers from various LS1/LS6 ported heads. I have used actual Cam doctor cam specs. This program DOES NOT accurately predict LS1 family engine performance. I've contacted Motion Software (the company that actually produces the program) and asked if they had any plans of adding LS1 type models to the software. They told me that there are none at this point.

The current software does not take into account many factors common to LS1 family engines. The biggest problems are in the areas of port velocity and piston speed (due to the longer rod lengths in our engines) Also, the combustion chamber shape and resistance to detonation are still modeled after the SBC.

If any of you have ever driven a SBC engined car making the power levels some of the faster LS1's are making you will see how much difference there is in the way the power is produced. Those cars are almost undriveable.

Please don't take this as a flame. I just wanted to point this out since I've spent more than a few hours working with this software.

Thanks,
Shane

<small>[ May 15, 2002, 09:45 AM: Message edited by: XtraCajunSS ]</small>
Old 05-16-2002, 12:05 AM
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Default Re: So whats so bad about the GM Hot Cam?

What's wrong with it?

...it's not popular on the NET! <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

<img border="0" alt="[judgement]" title="" src="graemlins/gr_judge.gif" />
Old 05-16-2002, 07:55 AM
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Default Re: So whats so bad about the GM Hot Cam?

xtra.. good call.. that info is from an old
thread on ls1.com back in feb2000 from some
very knowlegable folks, They were having a
long discussion and were posting numbers back
and forth for the varoius cams, I made some
graphs for them.. its all calculated and
general in nature..
I would enjoy getting my hands on some real data
and run the comparison graphics again..
I enjoy reading where you dove in for some of
the physics and internal design of the ls1.
we could use much more of that around here but
im not qualified for more than a reader..
Regards
Terry
Old 05-16-2002, 08:59 AM
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Default Re: So whats so bad about the GM Hot Cam?

Terry, everytime I see you post a link to that calculated cam graph it makes me cringe. Desktop dyno is pretty useless for our motors, and all you are really doing is spreading inaccurate info that someone *might* think is legit.

Maybe you should put that guy's reply above underneath the graph as somewhat of a disclaimer, or better yet, not use the graph at all.

I've played with the program and could not get it to simulate ANY of my previous combinations, and I do have all of my data. Its an SBC program pure and simple, not an LS1 program.

Tony
Old 05-16-2002, 09:08 AM
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Default Re: So whats so bad about the GM Hot Cam?

TA,

I appreciate that. You'll find that I will always be the last person to start a flame war here. I don't have time for that. One thing I do enjoy is helping others save time, heartache, and money. God knows I've wasted enough of each for all of us! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

Shane
Old 05-16-2002, 10:34 AM
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Default Re: So whats so bad about the GM Hot Cam?

If you're looking for 400 RWHP, or close to it, then you need to look at a different cam. I've seen close to a dozen M6 cars dyno with the hotcam, and the average is 365-370 RWHP w/ all of the bolt-ons. My Comp XE-R 224/224 on a 112 LSA idles quite a bit better than the hotcam in the M6 cars, and I dynoed 380 RWHP with a locked converter. If you saw Tony's post about the all-bore 382 that swapped from the A4 to M6, you'll see that there's still a 5% difference in power between the A4 and M6, even with a locked converter. That equates to exactly 400 RWHP through an M6. There's my $.02. <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
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Old 05-16-2002, 04:36 PM
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Default Re: So whats so bad about the GM Hot Cam?

It is true that the hotcam is about 10 HP less, but that is at max rpms 6200 or so. But throught the range it makes as much or more power than the others. it just quits at about 6k, which is fine for me with my stock short block. Stock LS1s don't like to spin much more than that, although some folks get awy with it. It is a chacce i don't want to take. This cam/kit works great on the street where you don't drive around a WOT all the time. For a race car a more agressive set up would work better, but for the street it works great. From 3k to 6k this cam rocks.



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