99 c5 custom cam options
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Instructor
Joined: Jun 2010
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99 c5 custom cam options
i just bought my 99 c5 A4 346 c.i. i have some mods im dropping in in the next few weeks, (tpis headers, powerbond pulley, cold air intake, 243's milled .020 ported and polished by a good known reputable head shop in houston they flow 320 @ 600 lift with ls3 intake valves turned down to 2.04 and 1.55 ex valves) circle d 3400 stall and im thinking about going with a 235 242 621 615 113+2 (lsl lxl lobes) what do you guys tihnk about the cam specs?
Last edited by kha4079; Mar 28, 2012 at 08:53 PM.
Racer
Joined: Mar 2011
Posts: 380
Likes: 0
From: Beaumont TX
dont forget valve springs and a different push rod length depending on the deck height for the heads your getting. if they are a stock height head deck most go with 7.425in rods but its always best to measure.
id also recemmend patriot extreme duals springs for that size cam. good to .660 lift
also what is your power goals? may not need a cam that big your can get better driveability with a different choice...
id also recemmend patriot extreme duals springs for that size cam. good to .660 lift
also what is your power goals? may not need a cam that big your can get better driveability with a different choice...
Last edited by Underdogg; Mar 28, 2012 at 08:58 PM.
Melting Slicks
Joined: Mar 2002
Posts: 2,203
Likes: 63
From: Staten Island NY
Seems like a pretty big cam. Upper rev range power. Going to need a good tuner.
With .621 lift and heads milled .020 I would make sure check the PTV.
Also consider going with the Comp Cams trunion upgrade for the rocker arms.....LS6 manifold.....
With .621 lift and heads milled .020 I would make sure check the PTV.
Also consider going with the Comp Cams trunion upgrade for the rocker arms.....LS6 manifold.....
Melting Slicks
Joined: Dec 2006
Posts: 2,186
Likes: 2
From: Woodinville WA
Definitely check PTV clearance, has more to do with Lobe separation and Duration than max lift though, as full lift is a achieved when the piston is down in the cylinder. More of a top end cam than I'd like for a street car, but to each his own; I'd prefer something in 228/230, but with that stall you would be able to run just about anything you want.
Last edited by ctusser; Mar 28, 2012 at 09:37 PM.
Safety Car
Joined: Aug 2011
Posts: 4,454
Likes: 412
From: Portland OR
I have a 226/230 .600 lift cam with .030 milled heads and the PTV is close on the intake. So by all means check it.
I think that is a lot of cam for an auto with not a bunch of stall. However, I'm not speaking from experience because I haven't finished mine yet.
You might also consider the Cloyes hex adjust timing set. They are nice, the chain is tight.
Ron
I think that is a lot of cam for an auto with not a bunch of stall. However, I'm not speaking from experience because I haven't finished mine yet.
You might also consider the Cloyes hex adjust timing set. They are nice, the chain is tight.
Ron
Former Vendor
Joined: Jan 2007
Posts: 1,584
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From: Lubbock Tx
It should run great, but check your PTV clearance and be prepared to flycut because it may be necessary (It's pretty simple, nothing to be worried about). I've done a 235/243 for a couple guys before with ported 243 heads and had great results.
Personally, I'd consider flycutting regardless and running .040 head gaskets to maximize the return from the parts installed.
Personally, I'd consider flycutting regardless and running .040 head gaskets to maximize the return from the parts installed.
