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View Full Version : Opinions on cam choice PLEASE.



KIXASS
02-25-2007, 11:23 PM
Here is my set up so far:
306 9.75 comp.
AFR-165 61cc pedistal mount w/ upgraded springs
1.6 roller rockers
Edelbrock Performer RPM intake
Edelbrock 70mm throttle body
80mm C&L mass air meter
30# injectors
BBK Cold Air Intake (fender well)
BBK 1 5/8" Longtube headers


Cams I'm debating on are:

FMS F-cam 226/226 @.050 .512"/.512"
or
TrickFlow stage 2 224/232 @.050 .542/.563
or
should I just stick with my E-cam 220/220 @ .050 .498"/.498"

This engine is going in a 1991 Mustang GT convertible. Although it's main purpose will be a street/show type car, I still want it to run it's ass off on the street. I would like to add a S-trim down the road when I save up some extra money (or have a sweet deal come my way), but for now it will be a naturally aspirated set-up. So maybe I'm looking for the impossible but I would like a cam that will perform well N/A and also be a decent supercharger cam later down the road. One other problem I'm facing is that I would like a cam sound "nasty" but not totally destroy my bottom end torque. I might be wrong, but I always thought that the cams duration is the "lopey" exhaust sound you hear but when you increase the duration you also raise the powerband which in return will hurt the low end performance of a street car. Is that true? What cam (preferably off the shelf) would you guys recommend if not one of the 3 I listed earlier? I have an the E-cam in my old engine. I'm sure it is a great performing cam for the street, but I just wish it had a much more aggressive exhaust sound. I know my hang up with the cam sound sounds childish since the cars overall performance is what I should really be looking at rather than the exhaust lope :???: I was just hoping I could have the best of both worlds :-D

slowstang
02-25-2007, 11:47 PM
i have a similar setup to yours. Right now im currently looking at the Anderson Ford hi-rev n-51hr. They do not list specs on the cam but here's what they have to say...

Wildest and Best performer for 302 cu.in. 1.6 R.R. & 6500 rpm and 9:7 comp. Great with TFS Twisted Wedge, Edelbrock w/1.9 intake valve and AFR 165 heads. Must use Anderson Hi-Rev valve springs. Minimum 30lb injectors and 80mm mass air. Recommend 4:30 gears. Poor drivability under 2300 rpm, lumpy idle, rpm range 2500-6500, needs 2800-3400 converter. Must check piston to valve clearance.

Im sure the cam lacks in the lower rpm range but I bet it makes up for it on the top end :)

KIXASS
02-26-2007, 04:50 PM
I believe the specs for that cam are:
228/238 .499/.497 with 1.6 rockers 110 lobe sep.

That is a little too much for me. I'm trying to keep the peak power to 6000rpm. That cam would require an rpm extender as well, which I don't have nor want.

If you get that cam, let me know how it turns out.

I have also been looking at the AFM N-41 cam 222/232 .512/.512

sprayed347
02-27-2007, 10:12 PM
yea i would probably go with th n-41 if you are wanting to stay with the 6200 rev limiter,all depends on how you are going to use the car.btw hope you are happy with the c&l.

wild92lx
02-28-2007, 09:53 AM
my combo is similar to yours, stock bottom, twisted wedge head, N41 cam, typhoon intake, 30lb injector, c+l 76mm, 70mm tb, stock tune. This cam sounds great and makes plenty of power, you will need a looser converter, i went with an Edge. My car runs mid 12's on the motor and has gone a best of 11.53 with the help of a Nx nitrous kit. I would go with the AFM cam or have Comp cams grind a custom, the off the shelf cams are ok, but don't make as much power!

KIXASS
02-28-2007, 11:28 AM
Wild92lx......Thanks for the response. I have a 5spd tranny. What gears are you running? How much does your car weight? Would you happen to have a sound clip of your car or maybe live close so I could come by and listen to it?

Let me know

KIXASS
02-28-2007, 11:32 AM
I went on your Profile and see that you in Connecticut, so me stopping by to hear the car isn't going to happen :)

I would like to see my heavy ass convertible run 12.5 or better without a power adder. I ultimately would like to see it run low 11's with a S-trim later on down the road.

How many passes can you get out of a nitrous bottle before having to refil it?

frdfandc
02-28-2007, 01:33 PM
The average 10 lb bottle will let you have approx 6-8 passes when using a 125hp shot (if I remember correctly)

Black90gt
02-28-2007, 02:50 PM
that's about what i get Darin.....

P.S. Darin get a hold of me about you motor...lol

wild92lx
02-28-2007, 11:29 PM
My car weighs 3278 with me in it, it has 4.10 gears, I run a 28" tall drag radial and it just hits my msd limiter (6000 rpm) at the end of the 1/4. The AFM n-41 has a lopey idle, I run equal length shorties with a x pipe no converters and a flowmaster american thunder system. People tell me all the time that the car sounds great.