Cam Questions.
Thread Starter
TECH Regular
Joined: Aug 2009
Posts: 430
Likes: 76
From: Grand Valley
Cam Questions. Ok, here is my question
Car in question :
1998 Trans Am
LS1
T56
Current Mods :
FAST 78mm Intake
Longtubes
OR-Y (Soon to be catted)
Magnaflow Catback
Free Mods
SLP Lid w/ K&N
Im going to be driving the car daily in the summer from Mississauga to Kitchener (roughly 90 Kilometers each way), mostly highway.
I want to cam the car next spring, what I want out of the cam :
-Sound, I want a nice lopey idle.
-Emission Freindly, I wanna pass etests
-MPG, I dont wanna kill the mileage range, as its a summer DD
Ive done some digging, but does anybody here have anything I can slide in to achieve my goals?
Thanks in advance!
Car in question :
1998 Trans Am
LS1
T56
Current Mods :
FAST 78mm Intake
Longtubes
OR-Y (Soon to be catted)
Magnaflow Catback
Free Mods
SLP Lid w/ K&N
Im going to be driving the car daily in the summer from Mississauga to Kitchener (roughly 90 Kilometers each way), mostly highway.
I want to cam the car next spring, what I want out of the cam :
-Sound, I want a nice lopey idle.
-Emission Freindly, I wanna pass etests
-MPG, I dont wanna kill the mileage range, as its a summer DD
Ive done some digging, but does anybody here have anything I can slide in to achieve my goals?
Thanks in advance!
Last edited by Ape Man; Oct 13, 2010 at 10:11 AM.
Thread Starter
TECH Regular
Joined: Aug 2009
Posts: 430
Likes: 76
From: Grand Valley
Doesnt need to be crazy chopey, I just want a noticble lump, not spending money to cam it and hear it idle smooth, lol.
Its an M6 car and highway driven, so its going to be OK on gas regardless with the 3.42s.
Its an M6 car and highway driven, so its going to be OK on gas regardless with the 3.42s.
Lopey idle cams are also not emissions-legal cams. To pass an emissions sniffer test, choose a cam with at least 4 degrees of non-overlap at 0.050" That's as lopey as you can go on the idle, and still squeak by the smog test. And that's only with great cats and an excellent tune.
Lopey idle and stock gears don't play well. Going to 4.10:1 gears won't kill your mileage, by themselves, you can still see up to 28 mpg. And with a lopey idle, more gear can improve MPG by reducing lugging.
Lopey idle and stock gears don't play well. Going to 4.10:1 gears won't kill your mileage, by themselves, you can still see up to 28 mpg. And with a lopey idle, more gear can improve MPG by reducing lugging.
Thread Starter
TECH Regular
Joined: Aug 2009
Posts: 430
Likes: 76
From: Grand Valley
Would def. consider doing 4.10's, I just kinda wanna see whats my best choice in cam. Like to me, Power is a great benefit, but the sound of a choppy V8 can't be beat.
But, I do not want to lose driveablity and be filling up daily, and fighting with Etests.
So I was weighing out what cam options are avail.
But, I do not want to lose driveablity and be filling up daily, and fighting with Etests.
So I was weighing out what cam options are avail.
Thread Starter
TECH Regular
Joined: Aug 2009
Posts: 430
Likes: 76
From: Grand Valley
How would a TR224/224 .568/.568 112LSA suit me?
Also what else would I need to acompany the cam installed, I'd swap out pushrods, but this is more on a budget :
Cam
Pushrods
Timingchain
Tune
Would stock lifters and springs be O.K with this much cam, and how emission friendly would this thing be?
Also what else would I need to acompany the cam installed, I'd swap out pushrods, but this is more on a budget :
Cam
Pushrods
Timingchain
Tune
Would stock lifters and springs be O.K with this much cam, and how emission friendly would this thing be?
Last edited by Ape Man; Oct 13, 2010 at 03:05 PM.
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The 224/224,112lsa will put you at 0*overlap, but you want to be at -4*.
You'll need springs for sure, lifters depending on mileage and how well it was taken care of and driven.
A oil pump would also be worth considering.
As far as sound, just get a 224/224/114lsa, and drop the idle speed down 100rpm.
You'll need springs for sure, lifters depending on mileage and how well it was taken care of and driven.
A oil pump would also be worth considering.
As far as sound, just get a 224/224/114lsa, and drop the idle speed down 100rpm.
Last edited by 99Bluz28; Oct 13, 2010 at 07:55 PM.
