Help with Mod Choice
Thread Starter
TECH Regular
Joined: Aug 2009
Posts: 434
Likes: 77
From: Grand Valley
Help with Mod Choice Already fellow apes. I am looking ahead to next spring, and seeing my Trans-Am, and how I want to do something different to it. I have a few options laid out.
Option 1 :
Camshaft-ValveTrain upgrades (Springs, lifters, chain, pushrods and oilpump)
-Id likley go with a 220/220/114lsa, I'd love to run a 112LSA, but from what I have read I want to be about -8* overlap at .050" for the sniffer tests. (Can always lower it 100rpm on the idle to give me more raunch)
Idle quality :
http://www.youtube.com/watch?v=H7EBu4pCvZs
Pros to this :
-Sexy idle
-Power
-Able to say I have a cammed LS1 8)
Cons :
-Pricey
-Motor has 260,000KM on it
-Its running so nice now I'd hate to tear into it and cause issues
-My stock Clutch will likley tell me to F-Off shortly after a few WOT runs
Option 2 :
My exhaust sounds good, but I'd like a little louder, currently running :
Longtubes -> OR-Y -> 3" Midpipe into a Magnaflow with boom tubes.
I will have to cat the Y at the end of next year for an emission test, so I was debating a Chambered setup like a GMMG. The cats should take away the rasp, and it'll be louder for sure, then I could run some quad tailpipes kinda like this :
Uploaded with ImageShack.us
GMMG :
http://www.youtube.com/watch?v=vK4A7C0XYZw
Pros to this :
-Cheaper then cam
-Less risk of stuff going wrong
-Sound sexy
Cons :
-Its not a cam.
Option 1 :
Camshaft-ValveTrain upgrades (Springs, lifters, chain, pushrods and oilpump)
-Id likley go with a 220/220/114lsa, I'd love to run a 112LSA, but from what I have read I want to be about -8* overlap at .050" for the sniffer tests. (Can always lower it 100rpm on the idle to give me more raunch)
Idle quality :
http://www.youtube.com/watch?v=H7EBu4pCvZs
Pros to this :
-Sexy idle
-Power
-Able to say I have a cammed LS1 8)
Cons :
-Pricey
-Motor has 260,000KM on it
-Its running so nice now I'd hate to tear into it and cause issues
-My stock Clutch will likley tell me to F-Off shortly after a few WOT runs
Option 2 :
My exhaust sounds good, but I'd like a little louder, currently running :
Longtubes -> OR-Y -> 3" Midpipe into a Magnaflow with boom tubes.
I will have to cat the Y at the end of next year for an emission test, so I was debating a Chambered setup like a GMMG. The cats should take away the rasp, and it'll be louder for sure, then I could run some quad tailpipes kinda like this :
Uploaded with ImageShack.us
GMMG :
http://www.youtube.com/watch?v=vK4A7C0XYZw
Pros to this :
-Cheaper then cam
-Less risk of stuff going wrong
-Sound sexy
Cons :
-Its not a cam.
Last edited by Ape Man; Oct 14, 2010 at 09:20 AM.
Thread Starter
TECH Regular
Joined: Aug 2009
Posts: 434
Likes: 77
From: Grand Valley
"Id likley go with a 220/220/114lsa, I'd love to run a 112LSA, but from what I have read I want to be about -8* overlap at .050" for the sniffer tests. (Can always lower it 100rpm on the idle to give me more raunch)"
I think you want 0* or negative OL to pass a sniffer but IDK since I don't have to worry about it.. I think that is why many go 224/224 114LSA. That cam should be -2* and pass with a good tune. It still has a good lope. search it and you will see...
