1Fst98ta

The texes speed cam may be a little big for the 978 springs what do you all think of the f13 cam ?

SPANKY LS1

iTrader: (24)

I am going with the F13. Even though it is a smaller cam than the 231/237, it seems to regularly outperform the larger TSP cam. Good luck, Shawn

jrp

iTrader: (16)

i plan an FM13 or custom FMS for my new shortblock. the power under the curve is

Kent1

If you get the F13 cam, will you get the 112 or 114? What is the horsepower difference in these two cams? Which one is more streetable or best strip/street cam? Sometime in the future I am heading toward a cam/head package. Any assistance will be appreciated.

1Fst98ta

thats a good question about the 112 and 114 .. i wouldnt mind having a smooter idle

pdd

iTrader: (3)

if ya want a smother idle - 114 definatly. im going with the FM11 ON A 114

SouthFL.02.SS

The TSP 231/237 will probably be easier on springs than the FUTRAL cam, because the lobes on the TSP cam are softer, less aggressive lobes (comparable to about an XE lobe from what I've read). I'm even running Comp 918's on my setup.

As for the lift numbers, both cams are similar. And, because of its aggressive ramp rates, I wouldn't doubt it if the smaller FMS can outperform the larger TSP, but in the end the two cams mentioned will put down similar numbers and produce similar results, just with a different manner of doing so.

foff667

iTrader: (2)

geez you startin to sound like gomer hadnt even worked out the issues you had before and already are stepping up to a bigger cam hehe

pdd

iTrader: (3)

i figured i had to pull the heads, so while the car was ripped apart again, i couldnt resist

foff667

iTrader: (2)

good excuse i guess, I'll save that one for the wife

1Fst98ta

The thing i am worried about is valve float , i think the 978 springs are strong enough for either of the cams

SouthFL.02.SS

You'll be fine with either cam. Valve float shouldn't be an issue.

Kurtomac

iTrader: (5)

im running 987s which are weaker than 978s on my F13 cam and i get no float and i spun mine to 6800 on the dyno heres a graph

1fastWS6

iTrader: (3)

Gomer was telling me that the F13 has a significantly better idle quality than the TSP cam does, which I'm sure is due to the faster ramp rates on the F13. I'm kind of leaning toward the F13 myself, except that TSP is working on some new lobes with Lunati that sound promising. They're working on a 233/233 and a 233/239. Last I heard though they were working out some P/V clearance issues with the faster ramps.

Craig

2000PewterZ28

Spanky can you show us proof of where the F13 out performs the 231.237?
Mr. Gomer dynoed 451rwhp with the 231.237 camshaft, last I heard he swapped electric water pump, ported throttle body, the f13, and installed bigger valves in his Patriot heads to redyno at 457rwhp. 6rwhp from all those mods doesn't tell me the cam regularly outperforms the 231.237... Is there other results that I'm missing?

I think both cams work really well & you can't go wrong with either choice!

PewterZ28

Damian

iTrader: (89)

Dyno #'s in my sig w/ an FM13 style grind. . And considering the FM13 is SMALLER than the 231/237 by a good bit, it shows the quality of the stick itself.

The performance POWER wise is going to be pretty close between the 2. As far as driveability, there isn't a comparison IMO. My cam drives completely like stock, ZERO surge, ZERO idle hunting, and I can lug the motor @ 1200 rpm's in 6th if I want to.

FMS has proven to have the best of both worlds. Power and reliability. I'll be sticking with them.


josh

SPANKY LS1

iTrader: (24)

Gomer dynoed 474 rwhp with the F13, 451 with the 231/237 (which is a signifigantly bigger cam than the 231/237 fwiw). His results are found here. He gained ~23 rwhp with a ported TB (~5hp) and an EWP (~0-5 hp), so it appears that the smaller FMS cam gained 10-15rwhp over the larger 231/237. (Heads were not touched during these dynos, no bigger valves, no add'l porting, etc) Search for FMS cam-only dynos for more examples of stout numbers being put out by 228/228 and similar "small" cams that are available from FMS. Taking nothing away from the 231/237, it is a good cam. But if I can have better driveability, idle, and still produce equal or more power with a smaller cam, it is a no-brainer IMO.

Shawn

Damian

iTrader: (89)

All things being equal, the FMS grinds WILL make more power. I've seen it done over and over again. Alan @ Futral uses different and more aggresive lobes than Comp XE-R cams.

I've ran 3 different cams in my car, 2 were XE-R's and the final being the FMS stick. You see which one I stuck with..


josh

gomer

iTrader: (13)

Let me come in here to clarify that the 474 rwhp with the FM13 was without the belt on the car. With the belt on and the FM13 it was 460rwhp, the 451rwhp with the 231/237 was with the belt on. I think the two cams are very similair in power. The FM13 has a better idle, but it also costs a good bit more than the TSP cam. I don't think one is any better than the other, they are both good cams. My computer at home has crashed, but when it is back up.. I'll post a graph of the two against each other... both of them with the belts on. The FM13 has a little stronger midrange, but they are both pretty equal at the top.

1fastWS6

iTrader: (3)

Damian, which FMS cam do you have? Is it the F13??