Just Floor It

What do you have to do to get this cam in....I dont mean like "how to," but like, what do you have to change(i.E. Valve springs) Also on an A4 with 4.10s what type of 'Verter would you recommend???

Thanks

foff667

iTrader: (2)

4600+ stall for it to be worth a max effort cam like that to be effective.

Just Floor It

Damn, thats a big *** stall

foff667

iTrader: (2)

with most large cams...even most mild ones youll make peak tq upwards of 5000 rpms...for me i could only breakstall mine to mid 2000's thats not even close to that...id rather you be in your powerband than to depend on the gears to pull it through the powerband.

Just Floor It

What that TC be really bad on the street??

foff667

iTrader: (2)

yah probably lol

Pacific Muscle Cars

Probably not any worse than that cam will be on the street. Many people on these forums get far too caught up in peak #'s. It's power production "under the curve" that wins races For a street car you would be much happier with the performance of a cam that will maximize power from 2,500 - 6,000 than a cam that produces virtually no torque below 4,000 and peak power at 7,000.

foff667

iTrader: (2)

i dunno if i can completely agree with you...most races I see are from a roll, usually of more than 20mph, in that case with the right gearing & converter your gonna be above 4000rpms for the entire race...as long as you can still catch traction it would be great...but you have some cons that go along with that situation, streetablity, 7000peak meaning high shift points through what id assume is a stock 4l60e but all things considered it would win races...power under the curve is all fine but if hes over the curve for an entire race who cares? JMHO

Just Floor It

Well, I thought the TRex was one of those "under the curve" cams...Maybe I should go check some graphs

Well, whats a good cam that does what you were describing above??

Thanks

Just Floor It

I would like to spin ABSOLUELY NO HIGHER than 6500 RPMs..

foff667

iTrader: (2)

check out tsp's 225 or any of the 224 cams...they all peak between 6200-6500 and will give you a decent amount under the curve...but even the 225 doesnt make more power than before the swap till 3200 rpms from the looks of it...my 231/237 didnt make power till after 3800

JDPZ28

iTrader: (3)

Call Allan at Futral Motorsports, tell him what your goals and setup are and he can custom grind a cam for you. Probably something in the 224-230 duration range.

Pacific Muscle Cars

No amount of gear and converter is going to compensate for a "peaky" power curve. The sweet spot is too narrow, and he simply will not be able to keep it in that narrow range - especially with a 4L60E. Also, we're talking about a street car - not a dedicated race car. I just don't think he will be happy with a high strung peaky engine that needs to be wound out hard to see performance.

Contact Allen Futral at FMS and tell him what you're goals are. His cams are making incredible top end power without sacrificing mid-range torque.

Just Floor It

I would like to rev to about 6500, that would be freakin awesome

Just Floor It

Well, about the A4, I plan on building it up...

z98

Then you ABSOLUTELY don't want the t-rex cam.

2001 Pewter WS6

iTrader: (43)

Also 4.11's with a TCI 4400 is very streetable. I had the setup. The gears tighten the converter right up...

got_hp?

thats the most mis-used line on these forums.

how many times does your car dip to 2000 or 3000 rpm during a drag race?

its power under the curve IN THE RPM BAND THAT YOU RACE IN that wins

check what rpm your tach drops to between shifts.........any power/torque under 3500-4000 or so rpm is useless in a race. the higher up the powerband that your torque peaks, the higher your power will be and the faster you will accelerate in your racing power band.

unless of course youre racing to see who can pull that stump the fastest.

foff667

iTrader: (2)

as far as i know its avg power in your powerband that wins races not power under the curve.

Pacific Muscle Cars

No - it's the most misunderstood concept on this forum. I never said anything about 2000 or 3000 rpm. Power under the curve refers to the entire power curve - not just low rpm, as you've interpreted my statement to mean. A cam that produces power in a very narrow range (peaky) will not be much fun to drive. A cam that produces high power over a wider range will yield much better performance.