Cam and heads!
Launching!
Joined: Dec 2001
Posts: 297
Likes: 0
From: ..
fwiw..I got a 224/224 .563 114lsa in a Z06 and its so civilizied I think GM should have made the car this way from the factory.
Supposed to pass emissions sniffer with these specs to if that matters.
Car runs great.
JB
Supposed to pass emissions sniffer with these specs to if that matters.
Car runs great.
JB
TECH Enthusiast
Joined: Jul 2003
Posts: 507
Likes: 2
From: Ankeny, IA
Up the cam man! Get an FM13 on 114 or G5X2. With a tune it will idle fine and make tons of power. It would be a shame to saddle those AFR's with a baby cam. My TR 227 is a little bigger than that and I wish I had gone bigger.
TECH Enthusiast
Joined: Jul 2003
Posts: 507
Likes: 2
From: Ankeny, IA
That depends on what you can tolerate. IMO (and we know all about opinions) I probably would try to keep at or below .600 on lift and less than 240 on either duration. Both cams I mentioned above would idle with the air on with no problems and would not require fly cutting of the pistons (fly cutting is a process that cuts a relief in the piston to allow clearance for the vavle). If the AFR's turn out to be what they are hyped to be you could see north of 450rwhp with either of those cams. Keep in mind LT headers and some modification of the stock exhaust will be necessary to let the motor exhale. If you're going to do the project a step at a time, I would get the exhaust taken car of first (which will make a difference right off), then get the cam and heads on there. If you do the cam and heads separately, the cam will make a bigger difference (on a stock motor) and is what I would install first, but will require you to replace the stock springs on the existing heads (which will incur a little extra cost since your aftermarket heads will come with a spring setup). Also if you do the cam and heads separately, you'll need to get the car tuned for each modification. This will cost you more too. But if you're like me, I couldn't afford to do it all at once. Along with the big items you'll need hardened pushrods, gaskets, and you may decide to upgrade the timing chain (I would) and rocker assembly (purely optional). One thing is guaranteed, once you're done the difference between this and stock will be night and day.
Thread Starter
Staging Lane
Joined: May 2004
Posts: 50
Likes: 0
Originally Posted by 99C5JA
That depends on what you can tolerate. IMO (and we know all about opinions) I probably would try to keep at or below .600 on lift and less than 240 on either duration. Both cams I mentioned above would idle with the air on with no problems and would not require fly cutting of the pistons (fly cutting is a process that cuts a relief in the piston to allow clearance for the vavle). If the AFR's turn out to be what they are hyped to be you could see north of 450rwhp with either of those cams. Keep in mind LT headers and some modification of the stock exhaust will be necessary to let the motor exhale. If you're going to do the project a step at a time, I would get the exhaust taken car of first (which will make a difference right off), then get the cam and heads on there. If you do the cam and heads separately, the cam will make a bigger difference (on a stock motor) and is what I would install first, but will require you to replace the stock springs on the existing heads (which will incur a little extra cost since your aftermarket heads will come with a spring setup). Also if you do the cam and heads separately, you'll need to get the car tuned for each modification. This will cost you more too. But if you're like me, I couldn't afford to do it all at once. Along with the big items you'll need hardened pushrods, gaskets, and you may decide to upgrade the timing chain (I would) and rocker assembly (purely optional). One thing is guaranteed, once you're done the difference between this and stock will be night and day.
Thanks for the Info
I'll let every one know what I decide.