Ls3 427 cam
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Joined: Feb 2011
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Ls3 427 cam Hi guys
For a 1999 Camaro SS M6 with LS3 block, 427 rotating assembly, LS3/L92 Texas Speed Ported heads
Help in choosing the cam , can I chose from LS7 cams or I have to go for LS3 cams ?
Let's say I checked LS7 Cams
My application is high speed street
I don't have a problem with rough and drivability , it's a weekend car
1- Which cam to go for ?
LPE GT21 , Texas LS7R , LG G7X5 or LG G7XX
The goal is the higher RWHP.
2- I will go for STOCK LS3 Intake Manifold , can I install Nick Willam 102 mm by cable in the LS3 STOCK I/M ??
Thanks all
For a 1999 Camaro SS M6 with LS3 block, 427 rotating assembly, LS3/L92 Texas Speed Ported heads
Help in choosing the cam , can I chose from LS7 cams or I have to go for LS3 cams ?
Let's say I checked LS7 Cams
My application is high speed street
I don't have a problem with rough and drivability , it's a weekend car
1- Which cam to go for ?
LPE GT21 , Texas LS7R , LG G7X5 or LG G7XX
The goal is the higher RWHP.
2- I will go for STOCK LS3 Intake Manifold , can I install Nick Willam 102 mm by cable in the LS3 STOCK I/M ??
Thanks all
Talk to somebody to spec you one instead of trying to go with an off the shelf cam. I talked to Geoff@EPS and he spec'd my cam which is almost the same combo you have but I will be spraying the **** out of mine so I went 416 instead. Talk to PatrickG on here or PredatorZ they both can recommend a cam.
239/247 .624/.624 114+2will net you around 550rwhp with those heads and 11.5/1 or so compression ....thats the cam I will be using in my LS3 427...You'll need a FAST 102mm to run that throttle body and make that HP..
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We are making 500 rwhp with a similar cam to the one above. You can fit a 90mm T-body to the LS3 intake. We are using the Holly t-body on a L76 intake.
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I've seen 580+ RWHP in C6ZO6's with cams only
Keeping in mind that it's the same 427 CID but in LS3
Can I use LS7 family cams ? or I have to stay with LS3 cams?
The cams I stated above are the biggest LS7 cams
I was thinking of .670+ lift to gain more power ................
Keeping in mind that it's the same 427 CID but in LS3
Can I use LS7 family cams ? or I have to stay with LS3 cams?
The cams I stated above are the biggest LS7 cams
I was thinking of .670+ lift to gain more power ................
Launching!
Joined: Jan 2011
Posts: 274
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From: Collierville, TN
NON-RESLEEVED LS3 based 427s generally have a 4.070 inch bore and a 4.1 inch stroke.
LS7 427s have a 4.125 inch bore and a 4 inch stroke.
Also, another significant difference between the LS7 and the LS3/L92 is the valve angle.
The LS7 is at 12 degrees and the LS3/L92 is 15.
In other words, you are making an apples and oranges comparison. Therefore, the same cam may perform differently in each application.
LS7 427s have a 4.125 inch bore and a 4 inch stroke.
Also, another significant difference between the LS7 and the LS3/L92 is the valve angle.
The LS7 is at 12 degrees and the LS3/L92 is 15.
In other words, you are making an apples and oranges comparison. Therefore, the same cam may perform differently in each application.
I've seen 580+ RWHP in C6ZO6's with cams only
Keeping in mind that it's the same 427 CID but in LS3
Can I use LS7 family cams ? or I have to stay with LS3 cams?
The cams I stated above are the biggest LS7 cams
I was thinking of .670+ lift to gain more power ................
Keeping in mind that it's the same 427 CID but in LS3
Can I use LS7 family cams ? or I have to stay with LS3 cams?
The cams I stated above are the biggest LS7 cams
I was thinking of .670+ lift to gain more power ................
Do your self a favor and call some one to spec a cam to your combo. I used Ed Curtis at FTI
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From: Your GF's pants
Honestly, have a cam speced, but if you're looking to pick up a neat off the shelf cam, go to www.engpwrsys.com, and look at Geoff's lineup of Blower Cams in fact! This may do what you like. (I'd stay with LS3 cams for LS3 heads if you're intent is to do it that way.)
