Got my Comp custom cam

matty50racer · Dec 14, 2003

I finaly got my Comp custom solid flat-tappet cam. I can't wait to get my motor on the dyno, this thing is gonna rumble.

I think my buddies Nova is gonna get

the cam specs are:
Intake/exhaust
lift .596 .608
adv. duration 280 284
Duration @.05 250 254
lash .018 .020
LSA 106
Installed on 104 intake centerline

5.0 HOtrain · Dec 14, 2003

Healthy

SmockDoiley · Dec 14, 2003

So your installing a flat tappet in your 87? Are you using an old block? Also are you sure its 250 duration? Thats a crap load of duration for a mild sounding 331. What rpm are you planning on running this thing out to? Hell the X303 is one of the most aggressive cams from ford racing and its only like 224 and I know anything over 230 is pretty wild for a street small block.

SmockDoiley · Dec 14, 2003

Actually 280 advertised would put it at like 230 degrees not 250 because advertised is usually 50 degrees higher.

matty50racer · Dec 14, 2003

SmockDoiley said:
Actually 280 advertised would put it at like 230 degrees not 250 because advertised is usually 50 degrees higher.

No Al at Northern Performance ordered it with the fastest race ramps possable because I am only running 11:1 compression and want the peak power to be around 7,000 rpm and shifted at 7,500 rpm. I have the cam card right here and that is what it says.

90mustangGT · Dec 14, 2003

That is one agressive cam! I take it this is a race car.

86Cobra · Dec 15, 2003

SmockDoiley said:
Actually 280 advertised would put it at like 230 degrees not 250 because advertised is usually 50 degrees higher.

You can't make a generalization like that. It all depends on the ramp rates.

86Cobra · Dec 15, 2003

SmockDoiley said:
So your installing a flat tappet in your 87? Are you using an old block? Also are you sure its 250 duration? Thats a crap load of duration for a mild sounding 331. What rpm are you planning on running this thing out to? Hell the X303 is one of the most aggressive cams from ford racing and its only like 224 and I know anything over 230 is pretty wild for a street small block.

230+ duration is not a big deal. My FTI hydraulic roller is in the mid 230s/low 240s and it's very streetable in a 306.

matty50racer · Dec 15, 2003

That is one agressive cam! I take it this is a race car QUOTE said:
Yea, it is going in my '87 wich will be a trailered race car. Right now it has no motor so it is just a lawn ornament ), but that is why I bought the 2000 to play around with. Gotta love those modulars running smoothly 6,000 with power .

PURESTREET5006 · Dec 15, 2003

SmockDoiley said:
So your installing a flat tappet in your 87? Are you using an old block? Also are you sure its 250 duration? Thats a crap load of duration for a mild sounding 331. What rpm are you planning on running this thing out to? Hell the X303 is one of the most aggressive cams from ford racing and its only like 224 and I know anything over 230 is pretty wild for a street small block.

You think thats alot for a 331 try my cam spec's in my P/S combination

.500@.050 int & exh
248@.050 on the intake
256@.050 on the exhaust
on a 104 lobe center

This is FTI/COMP custom grind for a carb'd combo. ...shifted at 7200 rpm with "stock type" roller lifters....and all this in a 310 cid bullet.

matty50racer · Dec 15, 2003

PURESTREET5006 said:
You think thats alot for a 331 try my cam spec's in my P/S combination

.500@.050 int & exh
248@.050 on the intake
256@.050 on the exhaust
on a 104 lobe center

This is FTI/COMP custom grind for a carb'd combo. ...shifted at 7200 rpm with "stock type" roller lifters....and all this in a 310 cid bullet.

That sounds like an awsome cam except for the lift, but I am sure that is dictated by the rules of your class. Some people just have no clue what it takes to make real power out of a motor. People always ask me "is it like an E cam or X cam and I just

.

PURESTREET5006 · Dec 15, 2003

On the street i tell people this is a E OR B303 CAM depending on how big of a lie i wanna tell at that time.

matty50racer · Dec 15, 2003

PURESTREET5006 said:
On the street i tell people this is a E OR B303 CAM depending on how big of a lie i wanna tell at that..

That makes me wish I could run my car on the street, you must have some good connections to get that thing street legal.

SmockDoiley · Dec 16, 2003

Ramp rate I understand but I've never seen something so steep on a flat tappet. Usually thats reserved for a roller being that a roller can handle climbing the lobe like that where as a standard lifter starts to pinch on the corner of itself. But being a race motor its not meant to last forever. The reason I'm running a mild duration is due to the 17 pound blower I have and as we all know superchargers dont like lots of duration that can kill pressure buildup.Plus I would think if you want such an aggressive cam why not have a valve train that can keep up with it?

PURESTREET5006 · Dec 16, 2003

Legality

matty50racer said:
That makes me wish I could run my car on the street, you must have some good connections to get that thing street legal.

I have another mustang that i drive sometimes (4cyl) that i just swap plates with and put the insurance card in This 85 hasn't had plates in 4 years.

Got my Comp custom cam

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