hi, i am about to purchase my new camshaft, i was wondering what cam would you guys go with. 5.0 unboard block with flattop 4valve relief stock head gaskets trickflow 170cc 61cc heads .600 dual valves. explorer gt intake fast ezefi retrofit efi i am trying to figure out what my max lift before i start hitting cylinders would be. i am thinking between 3 different cams. Camshaft: Rollin' Thunder Hydraulic Roller Part #: #2221 Vehicle Type: FORD Engine Application: 289-302 V8 RPM Range: 1500-6500 DURATION AS ADVERTISED INTAKE: 298° EXHAUST: 302° DURATION @ .050 INTAKE: 227° EXHAUST: 234° LIFT @ CAM (Lobe) INTAKE: 0.325" EXHAUST: 0.325" LIFT @ VALVE INTAKE: 0.52" EXHAUST: 0.52" LOBE SEPERATION: 112° INTAKE CENTERLINE: 107° IDLE VACUUM @ 1000 RPM: 12" Camshaft: Rollin' Thunder Hydraulic Roller Part #: #2281 Vehicle Type: FORD Engine Application: 351W V8 This camshaft is used in the Edelbrock XT EFI 347 crate engine #45363 RPM Range: 1500-6500 DURATION AS ADVERTISED INTAKE: 299° EXHAUST: 302° DURATION @ .050 INTAKE: 235° EXHAUST: 238° LIFT @ CAM (Lobe) INTAKE: 0.358" EXHAUST: 0.364" LIFT @ VALVE INTAKE: 0.573" EXHAUST: 0.582" LOBE SEPERATION: 112° INTAKE CENTERLINE: 107° IDLE VACUUM @ 1000 RPM: 10" Trick Flow® Track Max® Hydraulic Roller Camshafts for Ford 5.0L TFS-51403001 Product Line:Trick Flow® Track Max® Hydraulic Roller Camshafts for Ford 5.0L Part Type:Camshafts Cam Style: Hydraulic roller tappet Basic Operating RPM Range: 2,000-5,500 Intake Duration at 050 inch Lift: 221 Exhaust Duration at 050 inch Lift: 225 Duration at 050 inch Lift: 221 int./225 exh. Advertised Intake Duration: 283 Advertised Exhaust Duration: 291 Advertised Duration: 283 int./291 exh. Intake Valve Lift with Factory Rocker Arm Ratio: 0.499 in. Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.510 in. Valve Lift with Factory Rocker Arm Ratio: 0.499 int./0.510 exh. Lobe Separation (degrees): 112 Computer-Controlled Compatible: Yes Grind Number: HR-224/339-2S-12 Valve Springs Required: Yes Camshaft Manufacturers Description: Street; good idle, strong midrange power. Aftermarket intake, heads, and headers recommended. Calibrated mass airflow meter required. Compression: 9:1 minimum.
You won't have a problem with the TF cam, I run one of those on a flat top piston 5.0(no valve reliefs)... With 3.73 gear & 2600 stall I've run a best of 13.11@105 in a '88 T-Bird that weighs 3750 with driver...
I would contact either trick flow for some guidance or a cam manufacturer of your choice for their recommendation. There are several cams that will work with those heads without interference because the t/w heads have alot of free drop. However p/v clearance should always be checked.
trickflow says that the stage 1 will work easily edelbrock says that the performer rpm will work great. edelbrock says that the 351 rpm will work as well, a little big though i think i am going with the performer rpm sounds like the middle of the 2 for grinds and lift.
You would be better served to use something other than the Edelbrock cams. They are overpriced generic grinds that don't really perform well. Big duration is what causes interference problems more than lift. Edit: Forgot to mention, I ran the Edelbrock 2221 for awhile. It was a real pig. Car wouldn't idle under 1100 rpm and I had to run 18* initial timing advance. Installed the Comp XE cam in my signature and never looked back.
I went with an extreme energy comp cam in my stock 302 I dont remember the duration or the lobe but my lift was 512 and I havent had any problems other than the press in studs pulling. with screw in studs it would be great. I havent spent the money on the heads since Im replacing them just had the studs pressed back in and welded in place
i picked up a rocker girdle off of ebay yesterday. now just to pick a cam, ive used edelbrock cams in my chevy before and liked them should i go for the trickflow then?
Of the three you listed, for the street, that's what I would choose. If you notice the Edelbrock's listed rpm range they magically work over a much wider range than just about any other cam spec you can review. It's called "advertising"...
The TF heads and cams are designed to work together, they aren't some generic grind like many mfgrs sell...
well, i purchased the tfs stage 1 cam and bearings. i also picked up a stud girdle off the bay for 90$ shipped. im thinking of making a rev kit as well. i have a couple sbc rev kits laying around, i would have to make a new plate and lifter spring seats. but with a milling machine and lathe that would be easy.
IMHO.. that rev kit seems like a bit of overkill for that medium'ish sized cam. Probably see similar benefit that a slightly stiffer spring/lightweight retainer would give you too. Although, rev kits are excellent for hydro's that see beyond 6,500 quite often.
With the optional TF springs that are good for .600 lift, the 5.0 in my T-Bird has seen 6400 and would have still been pulling but the rev limiter in the computer said nope that's enough... I'm gonna fix that on the 331 with a carb...
why not stage 2 cam why not go with the stage 2 trick flow cam and 1.6 rocker ratio? power band says 2-6k I believe.
Probably best to keep all this in your own thread.. but I'll quickly comment to give you perspective. Cubic inches, especially when gained from extra stroke, tends to quickly tame a cam down. Installing a cam designed for the 302 into a 351 will cause it to react differently in a 351" motor. More vacuum(stronger carb signal), lower torque peaks, etc. Also.. dual plane manifolds tend to tame a camshaft down as it splits the overlap area between the plenums divider to better isolate intake reversion(less interruption of carb signal). Many mfgrs already build cams with 4* advanced timing with the cam installed straight up. The old racers rule is.. if you need to adjust the cam by 4 degrees?.. you have the wrong cam.
X2, it's not going to rev high enough to need a rev kit with a hydraulic roller. 7500 rpms with good aftermarket lifters is about all the rpms you ever (possibly) see. My 331 will rev to 7500 with a little bigger cam (Z303 with 1.7 rockers) with Comp's O.E. style roller lifters.
