[tvsn94]

I am finally going to replace the engine in my SN95. I lost interest some time back and put it to one side. I am looking at the FFRP Boss 302 B cammed with 9-1 comp and the gt40X heads (6007-x-302-B). I feel sure that someone has some experience with this combo in a boosted configuration and would like any opinions on tuning this cam, is it too much? I will use 10-12lb's boost and 42 lb injectors. this is my current setup . but that can change also.
I have no problem changing to the stock cam if the B cam is all wrong , but need the benefit of this groups vast experience.

[cgrey8]

It's my OPINION that any of the FMS cams are not the best cams to have. That's not to insult people that have them or to suggest people using them won't make good power. What I'm saying is if you are looking for a cam, there are better cams out there than the FMS cams made by Crane/Comp/others.

[tvsn94]

thanks for your input, ya know I am looking for an inexpensive solution an thought that the B cam might be usable. Oh, by the way what did you do about your MSD box? mine died while idling in the driveway.

[cgrey8]

That's where FMS comes in. They are affordable and they generally are better than stock cams.

In the case of the E303, most of the owners really like the cam...until they replace it with something better. But better cams usually comes at a cost. "Better" cams themselves are usually more expensive. And because "better cams" usually have higher lift, they often require longer pushrods since their base-circles are smaller to attain that higher lift.

One of the greatest things about the E-cam is it can be used almost anywhere. It's the ultimate jack-of-all-trades cam. It improves the performance of stock engines, but also works decent with H/C/I/E upgraded engines as well. It does kill low-RPM torque a little and roughens the idle compared to a stock cam, but not by so much you can't live if you are a DIY tuner...and so many people wrongfully believe they didn't get more performance engine if the engine doesn't lope a little. And the E-cam usually works with mild-to-moderate boosted applications. But in each of those scenarios, there's a cam out there that can serve those applications better if you have the money. However if you are on a tight budget, not a cam-guy-n-don't-wanna-be, but want to be assured you get noticeably better than stock performance, the E-cam is hard to argue against particularly since E-bay is usually littered with used E-cams for cheap (or at least it used to be).

I don't know if the same things can be said about the B-cam or F-cam. I don't know much about them.

[cgrey8]

...Oh, by the way what did you do about your MSD box? mine died while idling in the driveway.

I replaced the MSD box with a Summit Racing Capacitive Discharge ignition box which is made by MSD for Summit. It's quite obvious by the construction that it is MSD. But I have to tell you, I'm quite impressed with Summit's offering. I'm actually annoyed I didn't buy this Summit box 10 years ago instead of paying more for less buying an MSD 6A.

[85GT]

...Oh, by the way what did you do about your MSD box? mine died while idling in the driveway.

I replaced the MSD box with a Summit Racing Capacitive Discharge ignition box which is made by MSD for Summit. It's quite obvious by the construction that it is MSD. But I have to tell you, I'm quite impressed with Summit's offering. I'm actually annoyed I didn't buy this Summit box 10 years ago instead of paying more for less buying an MSD 6A.

Did you ever determine or confirm it's a multiple spark device?

[cgrey8]

The documentation says it is. As it's listed on the Summit Racing website:
Summit Racing SUM-850610 - Summit Racing Street & Strip® Multi-Spark Digital Capacitive Discharge Ignitions

[85GT]

That one looks very different from MSD boxes. How'd you figure out it is MSD made?

[cgrey8]

That one looks very different from MSD boxes. How'd you figure out it is MSD made?

Oh there are differences. The aluminum casting is different than MSD. That's the most obvious. However what is exactly the same is the way they afix the back plate to the aluminum casting. The rivets they use are the same. As well as the stickers and the documentation that comes with the unit. The font and layout are all the same as MSD. Add to that, the employees at Summit Racing told me it was OEMed by MSD. But a clone? No. The Summit units are not clones. There's obvious differences like MSD's usage of the "pills" for Rev limiting vs the Summit's unit has rotary switches to set the RPM.

Also the Summit unit has wiring harnesses of which MSD didn't adopt on their units until very recently. The one thing I do like about MSD's harness' is it's only 1 and it is at the box. The Summit unit has a 3-pin and 4-pin pigtail harness coming out of the unit. Then the longer wiring harness plugs into those pigtails.

And something I didn't realize Summit Racing had until just today is a 200mJ option for $200. I'm running N/A so I don't need that. But if I were running HEAVY boost, it would probably be worth another $50 to get the higher output unit. Although I don't know if people can actually blowout spark with even these "milder" ignition boxes. I assume they can since these units exist. It's either that or just a good marketing ploy to squeeze people for a little bit more. I don't know. One thing I'm sure of just by looking at my blown MSD 6A's internals, there maybe $50 worth of components in these things to start with...the aluminum case probably being the most expensive part. The rest is paying for the suppliers intellectual property.

[decipha]

in my experiences boost doesn't really matter with a cam, choose the cam that sounds the way you like and you'll be happy

[tvsn94]

REALLY, thanks that's the simplest advice I have read or been told.
you know I have torn up the blogs and found that a few really high out put combos use WAY diff cams than what I would have picked, that in itself contributes to my problem. since i am not looking for max output I think that I will wind up with a very mild combo, that has yet to be picked, but your advice is not out of line with what the OLD turbo books suggest. this thing will pull an aircond all summer. it's a must in the south. and will need to be mild. The stock Cobra cam is looking better all the time unless some body chimes in and gives another suggestion .

[StangD]

You'll probably want the 1.7 ratio cobra rockers to go with it. Are you aware the cobra cam is smaller than the standard GT cam until you add the rockers?" ,

[decipha]

off the shelf I'd recommend the TFS 1 cam, I've had nothing but good experiences with that cam

[tvsn94]

The rocker info is interesting, what would you have with the 1.7 and a GT cam?
And I will look at the Twisted flow cam also. The ford racing crate engine comes with 1.6. So between the original 1.7 Cobra rocker and the new ones I should have things covered.
I sent out request to Comp, Lunati And Crane,,,,,no response yet been 2 weeks. they must be selling all they can make.
Thanks for your input and don't hesitate to give me more direction. The crate motor should get ordered this week .

[StangD]

The rocker info is interesting, what would you have with the 1.7 and a GT cam?

You would then have a very popular mod. It's been done MANY times before. The stock GT cam is not half bad. It picks right up with a blower or nitrous too. As already stated the FMS cams had their day and are forever a part of Mustang 5.0 lore. . If you buy a new cam you might as well benefit from the decades of refinement in cam grinds IMO. Most of the cam manufacturers have had offerings that are superior for many years now.

[tvsn94]

gotcha , thanks