Making a GMPP Hot-Chili-cam
Thread Starter
On The Tree
Joined: Jul 2008
Posts: 170
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From: Over the rainbow
Making a GMPP Hot-Chili-cam I have been pretty set on picking up a new GM hotcam. It does everything I want and sounds perfect for my application.
Can't talk me outta it
Specs are:
219/228 .525/.525 112LSA
The only thing is the fact that lobe technology has come a LONG way since then. And .525 lift, while being nice and easy on the valvetrain, is considered rather soft today, therefore, I was going to add some 1.8 RR as well and bump the lift up around .560
That got me thinking....
..... what if I could get spec the original Hotcam with new lobe technology 
What would happen if I specced a:
218, .605" XFI intake
228, .588" XER exhaust
111LSA
ICL - Don't know
Would a Hot-Chili-cam be a good thing?
Thought, opinons, insights and comments required
Also if you think I've completely lost my mind
Can't talk me outta it
Specs are:
219/228 .525/.525 112LSA
The only thing is the fact that lobe technology has come a LONG way since then. And .525 lift, while being nice and easy on the valvetrain, is considered rather soft today, therefore, I was going to add some 1.8 RR as well and bump the lift up around .560
That got me thinking....
..... what if I could get spec the original Hotcam with new lobe technology What would happen if I specced a:
218, .605" XFI intake
228, .588" XER exhaust
111LSA
ICL - Don't know
Would a Hot-Chili-cam be a good thing?
Thought, opinons, insights and comments required
Also if you think I've completely lost my mind
I think you defeated the main reason people buy the hot and asa cam. that being they can run LS6 springs that cost $52. The way you specced it you would need atleast 918s and maybe duals
But what's really the difference in price between ls6 springs and 918s? $150, $200? But if you step up the cam, you will gain probably 20-30hp for that small increase in price for better valve springs.
Thread Starter
On The Tree
Joined: Jul 2008
Posts: 170
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From: Over the rainbow
I think a set of 918s work well with XFI lobes so it should be sweet there.
Still a hell of a lot cheaper than 1.8:1 RR thats for sure
ASA Cam on XFI/XER lobes?
Not for my application but imagine how wicked THAT would be!!!
Still a hell of a lot cheaper than 1.8:1 RR thats for sure
ASA Cam on XFI/XER lobes?
Not for my application but imagine how wicked THAT would be!!!
Thread Starter
On The Tree
Joined: Jul 2008
Posts: 170
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From: Over the rainbow
I was actually thinking about getting a custom grind with similar specs as the hotcam but with a bit more life and more duration built into it. I love the tq i get outta my hotcam!!
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Thread Starter
On The Tree
Joined: Jul 2008
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From: Over the rainbow
Just need to convince TSP to try it now
Post #52:
https://ls1tech.com/forums/generation-iii-internal-engine/973317-tsp-goes-back-engine-dyno-stock-346-ls1.html
Post #52:
https://ls1tech.com/forums/generation-iii-internal-engine/973317-tsp-goes-back-engine-dyno-stock-346-ls1.html
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well i dont think it is the lift that kills the springs, it would be the ramp rate. The seat perssure of the ls6 springs might not be enough once you get up in the rpms with that lobe design.
Thread Starter
On The Tree
Joined: Jul 2008
Posts: 170
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From: Over the rainbow
100%.... 918 springs would be used with it 
The real questions are:
- Would it work?
- Would it be worth it?
- Would it make gains (>20rwhp+) over the Original GM HotCam
- Are those specs the right ones to update this cam with 2008 technology
The real questions are:
- Would it work?
- Would it be worth it?
- Would it make gains (>20rwhp+) over the Original GM HotCam
- Are those specs the right ones to update this cam with 2008 technology
Last edited by PowerTalk; Aug 23, 2008 at 03:17 AM.
i dont think it is worth it, just get a proven grind like a tr224 it is easy on the springs and you know what you are getting with it. Because you will have to pay extra to have that cam made.
Thread Starter
On The Tree
Joined: Jul 2008
Posts: 170
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From: Over the rainbow
Ummmmmmmmmmm.......... Huh? 
From Texas-Speed website:
Comp Cams LS1 Custom-Grind Camshaft; Pic Your Own Specs! $369.99
TSP Custom 224/224, .566"/.566" Camshaft With Your Choice of Lobe Seperation. $369.99
Or I can take your recommendation:
TR224/224-112 Thunder Racing Custom Camshaft $389.99
From Texas-Speed website:
Comp Cams LS1 Custom-Grind Camshaft; Pic Your Own Specs! $369.99
TSP Custom 224/224, .566"/.566" Camshaft With Your Choice of Lobe Seperation. $369.99
Or I can take your recommendation:
TR224/224-112 Thunder Racing Custom Camshaft $389.99
Last edited by PowerTalk; Aug 23, 2008 at 06:11 PM.
Ummmmmmmmmmm.......... Huh?
From Texas-Speed website:
Comp Cams LS1 Custom-Grind Camshaft; Pic Your Own Specs! $369.99
TSP Custom 224/224, .566"/.566" Camshaft With Your Choice of Lobe Seperation. $369.99
Or I can take your recommendation:
TR224/224-112 Thunder Racing Custom Camshaft $389.99
From Texas-Speed website:
Comp Cams LS1 Custom-Grind Camshaft; Pic Your Own Specs! $369.99
TSP Custom 224/224, .566"/.566" Camshaft With Your Choice of Lobe Seperation. $369.99
Or I can take your recommendation:
TR224/224-112 Thunder Racing Custom Camshaft $389.99
Last edited by 180ls1; Aug 25, 2008 at 12:00 AM.
Thread Starter
On The Tree
Joined: Jul 2008
Posts: 170
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From: Over the rainbow
dont be a dick when people are helping you, and when they give you good advice. I never said only get that cam i said just look at that one. But i promise that tr224 is worth the extra $20 and it will **** on the hotchili cam all across the board. I also thing the 224 on .581 lift is a bettter cam then then tr cam on .566
That is totally the case. the cam is unproven you do not know nearly enough about a cam to just throw parts about two cams to gether and hope it goes well. And you can get used but in good shape 224's for $200 or get a fresh grind hotcam for $100 so you are really not saving money. There are also other 224s that you can get brand new $250, I never said just ger the tr one i was just using it as an example please re read what i said.
Last edited by 180ls1; Aug 25, 2008 at 02:17 PM.
how the f is he going to gain 20-30hp just from a change in cam lobes? have you not noticed the asa cam is consistently putting down 385-395whp...so you're saying that changing lobes will put you at or near 400whp? eehhh i'm not so sure. the cams work excellent as they are AND can utilize ls6 springs (as mentioned). i wouldn't put the additional abuse on the valvetrain for such a subjective gain in hp. i'd spend the $2-300 elsewhere, like an udp and tires or something.
