Trickflow Stage 1 with Speed Density?

[Matts50]

I have a chance at a great deal on a TFS1 cam. I would like to know if I will have any trouble with this cam and speed density. Some of the specs are 221*int/225*ex, .499int/.510ex, 112 LSA. From what I've read, those are at or just past SD limitations. But that's just it, I've only read. I am looking for actual info from someone running one or has run one. Thanks!

FWIW, this cam would be run with ported stockers and an explorer intake.

[Bluegrass]

A way to tell is to look at the opening point of the intake and closing point of the exhaust. This is the overlap period area.
If it is very near zero or negitive the cam should work.

[Matts50]

The only way I could do that is if I purchased the cam. I'm trying to find out who has run this cam with speed density or a cam with similar/identical specs before I buy it.

I would also be interested in buying a used cam that would work well with SD, if anybody has one.

[5.0Droptop]

the only problem i see is the 112 lsa
speed density cams usually have a 114-116 lsa.

[2000xp8]

Just so you know, a stage 1 cam isn't all that expensive to begin with.
So IMO a great deal would be like $75.

Anything more and you should just spend your money on one of the proven SD cams these guys here know about.

[Matts50]

Just so you know, a stage 1 cam isn't all that expensive to begin with.
So IMO a great deal would be like $75..

$100 for 0 miles on 1 install/start-up.

[5.0Droptop]

135.00 new when i got my tfs1 for my 306

[Matts50]

Found a nice used B-31 for sale, but with .544 lift, I'd have to worry about P/V clearence.

[tmoss]

I assumed a couple of ICL values and plugged the duration @.050" in with the lobe seperation in my calc sheet, and I get negative overlap. Dies that cam have 4° advnce ground in? That didn't make overlap positive either.

[Matts50]

I assumed a couple of ICL values and plugged the duration @.050" in with the lobe seperation in my calc sheet, and I get negative overlap. Dies that cam have 4° advnce ground in? That didn't make overlap positive either.

So what you're telling me is that the TFS Stage 1 would not idle properly for me?

I was ask if the cam has a 4* advance ground in it. Not that it matters, apparently lol

[tmoss]

negative overlap is what you are looking for to retain good vacuum, so the cam looks OK from that aspect - I have not seen anyone try the TFS 1 cam in SD though. If you can find the recommended ICL and the advance ground into the cam (if any( then we can get reasonably close to actual overlap.

[Matts50]

If you can find the recommended ICL and the advance ground into the cam (if any( then we can get reasonably close to actual overlap.

That's a little over my head sorry. What does ICL represent?

[5.0Droptop]

TFS-51402000
Valve Setting Intake: .000"
Valve Setting Exhaust: .000"
Advertised Duration (Degrees): 275 intake/279 exhaust
Duration at .050" Lift (Degrees): 221 intake/225 exhaust
Camshaft Lift: .312" intake/.319" exhaust
Valve Lift with 1.6 Rocker Arms: .499" intake/.510" exhaust
Lobe Separation (Degrees): 112
Intake Cam Timing at .050" Valve Lift:
Opens 3 degrees BTDC
Closes 38 degrees ABDC
Max lift: 108 degrees ATDC
Exhaust Cam Timing at .050" Valve Lift:
Opens 49 degrees BBDC
Closes 4 degrees BTDC
Max lift: 116 degrees BTDC
Firing Order: 1-3-7-2-6-5-4-8
Characteristics: Good idle, strong mid-range power. Aftermarket intake, heads, and headers recommended. Requires modified mass airflow sensor. Best with 9.0:1-10.5:1 compression ratio.
Recommended Valve Springs:
TFS-51400413 with 1.6 ratio rocker arms
Recommended Valve Springs:
TFS-31400414 with 1.7 ratio rocker arms

[5.0Droptop]

If I recall correctly the cam has 4 degrees advance ground into it.

[Matts50]

Thank you, sir. I didn't know what ICL meant.