What are the pros and cons of these two options. I assume less hp (but about how much difference?) with a cam only, but also less money spent ( also about how much difference). What are the other tradeoffs?

Thanks


[Modified by tr18, 1:34 PM 11/14/2003]

 

Not only will you get less peak HP, but you'll get a lot less area under the power curve. I see guys put in just cams and make great peak power, but I'd like to see a cam only car's dyno and see just how much power is under the curve.

 

:cool: :cool: :cheers:

 

I would do a cam first and see how the new afr heads turn out.

 

:iagree:

But think long term when looking at cams...(ie. AFR+CAM= Big #s)

 

Cams only make great power, I ran an 11.82 at 115 and there are many faster than me, but come on now,,,,,,,,,Heads and Cam will Definately Be Better :D

 

As happy as I am cam only, I'll be having the new AFR heads put on when they're available. Would've been a lot cheaper labor wise to do them at the same time. But of course, I just couldn't wait to get a cam in. It did make a big difference in my car, so I probably should quit while I'm ahead but once you start the mods it's hard to stop!


[Modified by c5grandsport, 9:58 PM 11/14/2003]

 

"...... so I probably should quit while I'm ahead but once you start the mods it's hard to stop"!


YEAH, I'll say, look what happened to me! :crazy: :crazy: :crazy:

All kidding aside (but not really, this mod game is addicting as sh it) i say do cam only as the stock heads flow great and the cam and bolt ons are good for high 11s and you don't need to go heads to achieve high 11s. If you then have the extra cash to burn wait for the new AFR heads and see the results they yield and then throw them on if you can reason that they are a good bang for your buck!!!! :smash: If you must do heads now look into the new patriots which are only 1600.00 without a core charge and look like a nice piece and performer. Honestly though, i feel the heads will only give you an extra tenth or two in the 1/4 mile and you really don't need them!


[Modified by MTI 427 Roadster, 8:00 AM 11/15/2003]

 

My current observations is that heads seam to be worth about .5 in the 1/4 which could be roughly 50 hp. Depending on what you get, you could be looking at an increase of $2,500 to your installed price.

It is a matter of where you want to end up.

 

I am doing cam first. I suggest you do the same also . The extra expense initially is too high. Like our friends here said mod fever is :crazy: . Enjoy your current mods then when you find a great deal a little further down the line go for it.

P.S. Make sure your choice is in line with your target , I plan to go with forced induction hence the LQ4 Head ( 6.0 L truck ) is a good choice since it lowers compression ratio to about 9:1. If NA is your way there is nothng like the Awesome LS6 . Compression goes up to about 10.5:1 ( without milling ) .

:steering:

 

if u can run as good as rwhite with his cam only c5 than heads are garbage!!!

i dont know about reliablilty issues but his times are dam well impressive

 

If I could pickup .5 from ported heads :eek: ,

11.15-.5+ better air = :p:

 

But doesn't the cam choice depend on whether or not you have installed heads? I thought your cam had to match your heads? I wouldn't want to change cams when I install the heads later? :confused:

 

RWHITE,

What are the specs again on that bad boy cam as i starting to think a cam would be just what i need to squeeze the extra 5oHP i'm looking to get out of my new 03 Z06 and what dyno numbers did you pull? I seem to recall you made around 390rwhp or so. How close am i and what torque do you make at the wheels.

 

I have a 2002 6sp. with bolt ons I made 331RWHP and 338RWTQ. With an under drive pully and TR 220.553/114, my power went to 379RWHP, and 363
RWTQ. not bad for stock heads and a mild cam. Since then I' ve had my heads done by one of the best. Joe Jill at Superior Auto in anaheim Cal. He also had my cam ground special to the flow numbers of the heads. results:
405RWHP 393RWTQ. If you can't afford the H/C do the cam first. The labor cost don't cross each other. Food for thought: cam, do the double roller timming chain and oil pump from SLP. heads. change your lifters OEM is just fine. Good insurance!!!

 

Specs on the M2

228/234 .607/.598 110

 

:cheers: :cheers: Gotta love those bad boy specs. :cheers: :cool:

 

:iagree: but get the same double roller timing set from Scoggin-Dickey and save a 100 bucks or get the same double roller timing set upgraded with a torrington bearing for the cam gear and still save 80 bucks. Scoggin-Dickey also offers a blueprinted and ported oil pump for 30 bucks less than SLP.

Somehow I spaced out and did not replace the oil pump and lifters when I had the chance. My oil pump is still ok but I have a lifter that sometimes takes as long as 5 minutes to pump up when the car is started :conehead