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GP Tuning LSA Cam Descriptions

98K views 81 replies 33 participants last post by  Lt1z  
#1 · (Edited)
Since I often field these questions I thought I would post this up as kind of a FAQ for our most popular cams.


Stage 1: This is the cam for the CTSV or ZL1 owner who want more power then an LS9 will provide but does not want a lopey idle and wishes to maintain the stock like feel at idle. Customers have made upwards of 730whp with this cam and supporting mods. Idle to 6500rpm range, works well with the stock A6 converter or M6.



Stage 2: This is the cam for the CTSV or ZL1 owner who wants a step up from Stage 1 in both power and sound. It has a mild lope at idle that lets you know the cam is not stock, but does not shake the car or have excessive overlap. Customers have run 10.1x 1/4 mile ETs with this cam and supporting mods. Idle to 6600 rpm range, works well with stock A6 converter or M6.



Stage 2.5: This is our most popular grind for the LSA. It is for the CTSV or ZL1 owner who want an aggressive sounding idle and increased power while still having an idle speed range that can be used with a stock A6 converter or M6. Idle to 6800 rpm range. This cam has made well over 800whp in LSAs and upper 800whp in ZR1s.



Stage 3: This is starting to get choppy. This is the grind designed for those LSA or ZR1 owners desiring an aggressive idle and extended power band. This cam will pull hard to 7000 rpm but requires and 800+rpm idle speed which is not suggested for a stock converter A6. This cam has produced over 900whp in a stock bottom end ZR1.




Of course we also offer completely custom cams for those of you with special builds using aftermarket heads, different bore and stroke combinations and also with special needs that the standard grinds do not cover. All of the above grinds have evolved over the years using the latest lobe technology for high rpm stability and lower valve train wear.

Please note that the video clips above just serve to give a general idea of the idle sound of the various grind in CTSVs. Different exhaust setups will have a large influence on overall sound. (ie... Borla or Magnaflow mufflers, cats vs catless, headers vs manifolds etc...) as well as the tuning.

Cost for a basic CTSV Kit including (Cam, Dual Ti Springs, Pushrods, Cam Gear, Chain Damper, Cam Bolts, Crank Bolt(if needed), Water Pump Gaskets, Timing Cover Gasket) is $1060 shipped.

The deluxe kit adds the following to the basic kit. ( Trunion Kit, Katech C5R timing chain) Cost is $1500 shipped.

We also offer oil pumps, rotating assembly parts, cylinder heads, fasteners, gaskets etc...

Edit: These descriptions only apply to the cam designs GP Tuning sells not other cams supplied by other vendors. All LSA cams are ground to our specs by Cam Motion.

Please direct all inquiries to either gpxtuning@gmail.com
 
#2 ·
LOVE my stage 2.5
 
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#9 · (Edited)
How much power could you gain from going from a 2.5 to a 3 on a all out build with stock cubes ?
 
#11 ·
Oh ok,I was wondering If I should go with a bigger cam. But I think the 2.5 will do fine when the build is done. Hoping for 770-800whp if the gods are with me. That should help me reach my 140+ trap goal
 
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#15 ·
My Christmas shopping list keeps getting more expensive. This month needs to end.
 
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#16 ·
Great info, thanks! I really needed a guide to blower cams.
 
#24 ·
So what would you recommend for a stock bottom end, full bolt on, ported heads, aggressive pulley combo, e85 build with a strong possibility of N20 in the future?
 
#25 ·
Great post thanks for all the info.
I'm in love with that 2.5. I can't wait for my warranty to be up so I can get some real work done to the car. Till then its just foundation work.
Matt you or your shop can do the install and tuning correct?
 
#27 ·
Great post matt, im going to be getting with you in the next couple months to do some of the mods we talked about
 
#35 ·
he did the same for me, great customer service. Love my Lt1z 2.5 cam :)
 
#36 ·
Matt goes above and beyond in the customer service department.

It will be a few months til my 2.5 goes in but he continually answers any and all questions about the planned combo.

So far I've got the cam, oil pump, lifters, rockers, timing components and oil grades all from his advice. Some at pretty odd hours too.

A+ and then some.
 
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#41 ·
Matt,

It sounds like I'd love to get the 2.5. Now here are my questions.... How would it be optimally used? With headers or without? With ported LSA heads or without?

It seems like headers will only get me a few more ponies, but what about slightly worked heads? I obviously know heads will help, but how much (roughly)? And I'll never touch the exhaust, so I won't bother asking about that.

Thanks, and sorry for the huge question.
 
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#42 ·
Sommer86
I was wondering the same thing. Now I have too wait till later today to hear the answer(shit:~)

I grew up in Magnolia Park in the fifties/sixties. 926 Pass ave. what great place to grow in. No gangs, no drugs, no graffiti. Cool cars, Bobs Big Boy, Griffith Park, cruising Hollywood Blvd and horse back riding at the Pickwick Stables, street racing:~)
Have you ever met Tommy Ivo? I think he still lives there. He was my brothers school mate and friend, Burroughs High. Graduated in 1956.
I should have asked if you know who Tommy Ivo is? I'm sure there are some older guy's that know.

Pain meds kicked in. I will close now.
 
#45 ·
I guess that you'll be up and running by the spring then! Congrats
 
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#46 · (Edited)
What would you recommend for a 10:1 434 with ported TFS heads, Johnson lifters, YT rockers, stock convertor and all the normal supporting mods?
 
#49 ·
thanks for the post, I'm gonna be in the market for a cam after my wedding at the end of next month, this broke down the differences for me.
 
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