(approx) a Day
Mechanical expertise or professional installation required.
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If you're after a bunch of lope and a solid increase to both mid and high range power, the B303 cam from Ford performance would be an excellent choice for your '85 to '95 5-liter Mustang. Now, the B303 roller cam will require the use of aftermarket valve springs for both stock or aftermarket EDs and will be recommended mainly for stick cars out there but AOD guys can get in on the fun when using an aftermarket stall. Price point for the cam by itself will be in the high hundred dollar range. And the install, according to the site, will get a full-blown three out of three wrenches on the difficulty meter and about a day's worth of work depending on your expertise. So, the good old alphabet cam debate rages on, right? B-cam, E-cam, F or X, which is gonna be the right one for me and my 5-liter? Well, listen guys, I'm not here to stoke that debate. However, what I am going to do is talk to you a little bit more about that B-cam and what it will deliver. So, right off the bat, guys, the B-cam is going to be a little bit peakier thanks to its longer duration when compared to that other very popular choice in the alphabet cam lineup, the E303. In fact, you're looking at 224 at 50 with the B-cam compared to 228 at 50 with the E-cam for reference. So, that basically means, again, the B-cam is going to perform very well above 3000 RPM. Whereas that E303 cam is going to be a little bit better for street use, thanks to its lower end or broader power band. Now, because you are getting more duration here with the B303 cam you are also giving that awesome idle which can make the car a little rough around the edges on the street in regards to overall drivability and, well, idle. Now, despite having more overlap, the B-cam is slightly smaller compared to the E303 when we are talking about overall lift, as the B-cam is gonna come in at 480 thousandths of lift compared to the E-cam's 498 thousandths, both when using a 1.6 rocker. Now, expect those numbers to increase slightly by 30 thousandths when using an upgraded 1.7 rocker. But going back to what we said earlier about power band, and it is very important to point out, guys, that Ford Performance is gonna state the B-cam should primarily be used with stick car application unless, of course, you're running a little bit more gear along with a converter in your AOD equipped Mustang. Another big thing to consider, guys, is that going with the set of GT40 heads or something similar that will move more air will ideally maximize potential of the B303 here. Now, the B-cam will also accept stock pushrod length but again will require the use of aftermarket valve springs providing you with at least 120 pounds of seat pressure along with 295 pounds while open. Now, the specific spring or part number will differ depending on which head you end up going with, so just make sure you reference the site depending on your setup. Now, as far as your install is concerned, well it's not going to be for the novice mechanics out there. So, that's why the site did kick this one up to a full three out of three wrenches on the old difficulty meter, while calling the job at least a day or so to get completed, but that really does depend on your expertise when doing this type of work. But wrapping things up, guys, if you're looking for a legendary budget-friendly camshaft to provide your 5-liter with a little bit more power and a lot more lope, then you should definitely be checking out the Ford Performance B303 Camshaft right here at americanmuscle.com.
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Features, Description, Reviews, Q&A, Specs & Installation
Technical Notes. Ford Racing recommends the use of a Hi-Stall torque converter for Mustangs equipped with automatic transmissions. Performance camshafts work only on EFI engines with mass air induction systems.
Fitment: 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 Details
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
January 09, 2020Helpful (0)
November 22, 2019
Mo powa baby
Haven’t installed it yet but I’m so ready to shipped out pretty fast alsoHelpful (0)
March 24, 2019
I note a good performance after change b303 is very niceHelpful (0)
January 04, 2019
Yet to install but i needed for than just valve springs to do this .you should a brand top end for whoever is thinking about getting a csmshaft.lifters.pushrods.rockersHelpful (3)
August 01, 2018
B303 cam awesome
the price and being an original ford part was outstandingHelpful (6)
May 12, 2018
Just got done break in, good power range with my set up has a nice chop to it tooHelpful (7)
April 12, 2018
Great bang for your buck
This cam install was pretty straightforward and went pretty smooth. I paired this cam with a set of heads as well. Granted it does take the computer awhile to adjust its self without a tune I did bump the timing up 2 degrees and installed a Wideband just for safety. If you’re debating whether or not you should by this cam stop! This is a must have for any fox. Thank you American Muscle for always putting out great products.Helpful (10)
April 03, 2018
After hearing one of my friends car with this cam I had to have it for mine. Now this thing sounds like a monster. I love it.Helpful (11)
October 05, 2017
Cam gave my 1995 Mustang an increase in horse power. Love the throttle response I now haveHelpful (13)
July 05, 2017
Got this to replace my old cam, came fast and is of great quality. Can't wait to install it to hear it.Helpful (10)
Have a 95 gt with as far as I know, a stock engine. Looking for extra horse power without breaking the bank. AKA my wife. So if I install this cam will all other stock components work with it? Also how much extra hp can I expect? Thx. Alan
You would need upgraded valve springs with these camshafts to get the correct seat and open pressures for the valves. There would be an expected up to 30-40 hp gain with this cam.
can u use 1.7 rockers to get a little more lift
These are only compatible with 1.6 rockers.
What's the correct pushrods Length for this B303 application. I have a stock bottom end with gt40heads intake, new comp cam springs and valve seals, edelbrock 1.6 rockers ?
The Ford Performance B303 Performance Camshaft will allow for the stock pushrod length to properly fit. The GT40 Heads will also accept the stock length. If you would like to upgrade your pushrods, we would recommend the Ford Performance brand which I have provided the link for you. https://www.americanmuscle.com/ford-pushrod-8595.html
What comes with this B303 cam? Do i have to purchase the 1.60 rockers seperate?
Correct, rockers are not included with this B303 cam.
Is it very necessary to replace the rockers?
This cam would be designed for the 1.60 rockers. If you do not have the 1.60 rockers you would want to look into changing the rockers out.
You def need a MAF or you will be stalling like there is no tommorow
Anything from 2800 to 3000 would be applicable.
For the Ford Performance B303 Performance Camshaft, Ford Performance states for stock cylinder head applications use M-6513-A50 valve springs installed at 1.820". For aftermarket cylinder heads M-6513-BH are recommended.
The Ford Performance B303 Performance Camshaft does not require new rockers or pushrods, however due to the flat top pistons with no valve reliefs found on the 1986 5.0L HO engine, piston to valve clearance must be checked to ensure no clearance issues arise from the added lift and duration.
When installing this cam, we would also recommend upgrading your valve springs to avoid any clearance or valve float issues. You would also need an updated tune after installing this cam.
Both the Ford Performance B303 Performance Camshaft and Ford Performance E303 Performance Camshaft will require measuring piston to valve clearance on 86 5.0L H.O. Motors. Due to loose production tolerances we have seen these clear, or interfere from car to car.
The Ford Performance B303 Performance Camshaft can be used with a Bama chip tune!
(approx) a Day
Mechanical expertise or professional installation required.
What's in the Box
|Part Number:||M-6250-B303||Rocker Ratio:||1.60|
|Lifter Type:||Hydraulic Roller Lifter||Engine Type:||FORD 5.0 (1985-1995)|
|Lobe-Center Int.||107°||Lobe-Center Exh.||117°|
|Duration @ .050" Lift:||224°||224°|
|Valve Timing @ 0.05" Lift:||Open||Close|
|Intake:||5° BTC||39° ABC|
|Exhaust:||49° BBC||5° BTC|
Fits 1985-1995 5.0L V8 Mustangs with 1.60 rockers