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Comp Cams: New LSR Series Cams - 27 new grinds

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Old 11-21-2008, 11:43 AM
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Big ***** Thumpr 235/249 @50 .573/.558 109LSA
GMPP "GAC" Cam 239/251 @50 .570/.570 106.5LSA

I wonder if the GMPP Grand Am Cup Cam was the inspiration for the Big ***** Thumpr?
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Old 11-21-2008, 04:58 PM
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Wow!!!! Unbelievable. Thanks so much

Post of the YEAR

Interesting their "LSr Turbo (remote mount)" cams I wonder if they'll suit front mounts and twin turbo kits too or just STS kits?
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Old 11-21-2008, 06:33 PM
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Comp Cams has this new stuff listed-cam specs and a description.Look at new products-09 new product brochure.You can download the brochure.
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Old 11-22-2008, 09:37 PM
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Looks like some good new cams Comp has added to their line up.
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Old 11-22-2008, 09:42 PM
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Originally Posted by oldguy99Z
Comp Cams has this new stuff listed-cam specs and a description.Look at new products-09 new product brochure.You can download the brochure.
Thanks for the info. According to the brochure the LSR cams are modern, aggressive cam lobe profiles - more aggressive than the XFI cams. They also have a new double spring specifically for these cams.
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Old 11-23-2008, 01:10 AM
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Originally Posted by DrkPhx
Thanks for the info. According to the brochure the LSR cams are modern, aggressive cam lobe profiles - more aggressive than the XFI cams. They also have a new double spring specifically for these cams.
I think they are supposed to fit between the lsk and xfi lobes. More options more product to sell, but will we see major gains it will be a little while until we find that out.
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Old 11-23-2008, 01:47 AM
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Originally Posted by vetteman9368
LSr Cathedral Port (All out power 5.7-6.2)

54-459-11 231/239 .617/.624 113LSA

54-460-11 235/243 .621/.624 113LSA

54-461-11 239/247 .624/.624 114LSA

54-462-11 243/251 .624/.624 114LSA
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Old 11-23-2008, 03:16 AM
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I wonder how this would do in an LQ9...

54-458-11 227/235 .614/.621 113LSA
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Old 11-23-2008, 03:34 PM
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I noticed all these cams (even the non thumpr ones) seem to have alot more exhaust duration than intake. What would the purpose of that be? I'm interested in the 54-458-11 227/235 .614/.621 113LSA for my locost.
I'm going to be running stock 241 heads . Could i get away with milling them a bit with this cam ?Any comments
Phil
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Old 11-23-2008, 03:59 PM
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can someone explain which heads have which style port?

Rectangular
Cathedral
Etc
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Old 11-23-2008, 05:28 PM
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Rectangular= l92/ls3, ls7
Cathedral= ls1,ls2,ls6,5.3, and 6.0 heads
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Old 11-23-2008, 05:38 PM
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thanks
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Old 11-23-2008, 05:59 PM
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Big ***** Thumpr 235/249 @50 .573/.558 109LSA

I would like to see what this would do with some juice?
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Old 11-23-2008, 06:08 PM
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Originally Posted by philmrx8
I noticed all these cams (even the non thumpr ones) seem to have alot more exhaust duration than intake. What would the purpose of that be? I'm interested in the 54-458-11 227/235 .614/.621 113LSA for my locost.
I'm going to be running stock 241 heads . Could i get away with milling them a bit with this cam ?Any comments
Phil
All of the cathedral port ones seem to have exactly 8 degrees more exhaust duration also. I wonder how much testing went into these.
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Old 11-23-2008, 08:11 PM
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Im guessing a heap
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Old 11-23-2008, 09:00 PM
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Originally Posted by addicted2myWS6
Rectangular= l92/ls3, ls7
Cathedral= ls1,ls2,ls6,5.3, and 6.0 heads
ls7 has its own unique port seperate from the l92 ls3 style
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Old 11-23-2008, 09:30 PM
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Originally Posted by WS6Jim
ls7 has its own unique port seperate from the l92 ls3 style
True, but it is still a rectangular port head.
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Old 11-23-2008, 09:33 PM
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54-468-11 247/251 .624/.624 114LSA

Hmm.....
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Old 11-23-2008, 09:36 PM
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I wonder whats up with all of the .624 lift on alot of the cams?
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Old 11-24-2008, 01:40 PM
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I'm no cam guru, but I like the fact that they are finally updating their catalog. A lot of these cams seem a little off from my point of view, but again I'm no expert.
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