B 303 Cam
- Thread starter j l smith
- Start date
Yes it will run OK without a tune, but the Ford Racing alphabet cams are old as dirt. There are tons of better cams on the market.
A custom cam is not that much more. I still have yet to see a post titled:
"Idle surging issues with my custom ground cam!"
But I have seen plenty of:
" Idle surging issues with my (B), (E) (F), cam!"
Chris
"Idle surging issues with my custom ground cam!"
But I have seen plenty of:
" Idle surging issues with my (B), (E) (F), cam!"
Chris
mikestang63
SN Certified Technician
Mike likes to make jokes but it was the B-cam that killed Chuck Norris. 
He's ok now though.
He's ok now though.
Like previously said, there are better cams. If you are on a budget, find one used. Roller cams don't really wear out. Trick Flow Stage 1, Small Comp Cams Extreme Energy, and everyone loves the old Steeda #18 and #19 cams. There are a couple of guys on here with GT40p heads, maybe some of them will chime in with what they think is best. It's not just a matter of making power, the old letter cams from Ford are a single grind, and they have some driveability issues too.
Kurt
Kurt
From the website...
N-412 Camshaft works with stock OEM pistons with 1.6 roller rockers. RPM range 2300-6200.
302 c.i.d. This cam is to be used with 1.6 R.R. Great with GT-40, TFS or Edelbrock heads. Minimum 24lb injectors and 75mm mass air. Recommend 3.55 to 4.10 gears. Great drivability down to 1800 rpm, nice idle, rpm range 2300-6200, works best with 89-93 EEC, needs 2500-2700 converter.Example of using N-412 camshaft
DSS 306",AFM N-412 camshaft, AFR 185 heads,70 mm T.B.,30# injectors,Holley Systemax, 76 mm C&L mass air meter ,Flotech shorty headers,off road h-pipe,flowmaster 2 chamber muffler, MSD 6al & blaster coil,1.6 rr,190l itp,,BBK cold air ind,
Specs found on this site doing a quick search...
N-412 Cam Spec
Engine 302HO/351
Duration at .006 -- Int. 276 Exh. 284
Duration at .050 -- Int. 222 Exh. 230
Timing events at .050 --Int. 3/39 Exh. 51/-1
Lobe lift @ cam -- Int. .320 Exh. .320
Gross Valve Lift w/1.6 Int. 0.512 Exh. 0.512
-Lobe Seperation 112
-Degree intake Lobe to 108
-Valve Lash (hot) Int. & Exh. 0
N-412 Camshaft works with stock OEM pistons with 1.6 roller rockers. RPM range 2300-6200.
302 c.i.d. This cam is to be used with 1.6 R.R. Great with GT-40, TFS or Edelbrock heads. Minimum 24lb injectors and 75mm mass air. Recommend 3.55 to 4.10 gears. Great drivability down to 1800 rpm, nice idle, rpm range 2300-6200, works best with 89-93 EEC, needs 2500-2700 converter.Example of using N-412 camshaft
DSS 306",AFM N-412 camshaft, AFR 185 heads,70 mm T.B.,30# injectors,Holley Systemax, 76 mm C&L mass air meter ,Flotech shorty headers,off road h-pipe,flowmaster 2 chamber muffler, MSD 6al & blaster coil,1.6 rr,190l itp,,BBK cold air ind,
Specs found on this site doing a quick search...
N-412 Cam Spec
Engine 302HO/351
Duration at .006 -- Int. 276 Exh. 284
Duration at .050 -- Int. 222 Exh. 230
Timing events at .050 --Int. 3/39 Exh. 51/-1
Lobe lift @ cam -- Int. .320 Exh. .320
Gross Valve Lift w/1.6 Int. 0.512 Exh. 0.512
-Lobe Seperation 112
-Degree intake Lobe to 108
-Valve Lash (hot) Int. & Exh. 0
You can run the B cam without tuning. It's outdated and won't have the best street manners or produce the most power for the combo but will work fine. If you end up with a surging idle it's from another reason. That Anderson cam is a good one and so is comp cam 264-270hr either works great imo
Usually the 1.7 rockers don't cause issues. Usually get more problems from bigger valves than more lift. Test everything though, playdoh is 50 cents at Walmart.
Kurt
Kurt
Usually surging idle is from a dirty iac valve,tps sensor out of range,sometimes from another sensor,vacuum leak,or possibly a few other things I can't think of lol.
There is a sticky in tech for trouble shooting if you are having a problem.
Similar threads
