New Cam

[Mel 61]

I have a 1992 Bronco with a 351w 5.8liter engine rebuilt and bored 30 over . I want to put a high performance cam in it but sounds like a huge ordeal to undertake . Has anyone done it ??

 

[miesk5]

yo MEL;

Overview, Bronco & trucks, vans, stangs, etc.

Source: by Ryan M (Fireguy50) at http://www.oldfuelinjection.com/?p=9

How to pick a CAMSHAFT for EFI by Ryan M (Fireguy50)

For a good fuel injection truck cam:

intake duration @ 0.50" should be kept at or under 210

Gross valve lift should be kept under 0.500

Lobe seperation should be at or above 114°

Good 5.0L/5.8L (302/351) EFI hydraulic flat tappet cams:

Comp Cam 35-255-5 (http://store.summitracing.com/partdetail.asp?part=CCA-35-255-5)

* Duration at .050 in.: 210 / 214

* Gross valve lift: 0.478 / 0.485

* Lobe separation: 114°

Edelbrock 3782 (http://store.summitracing.com/partdetail.asp?part=EDL-3782 )

* Duration at .050 in.: 210 / 216

* Gross valve lift: 0.469 / 0.484

* Lobe separation: 116°

Crane Cams 444232 (http://store.summitracing.com/partdetail.asp?part=CRN-444232)

* Duration at .050 in.: 206 / 214

* Gross valve lift: 0.448 / 0.464

* Lobe separation: 114°

Best 5.0L/5.8L (302/351) Roller EFI cam:

89-95 Mustang 5.0L ** (http://fordfuelinjection.com/public/5.0Lcam-specs.jpg)

Ford Part numbers: E8ZE-6250-CA / F1ZE-6250-AA / F4ZE-6250-DA

* Advertised Duration: 276 / 266

* Duration at .050 in.: 214 / 210

* Gross valve lift: 0.444 / 0.444

* Lobe separation: 115°

b]Best 302/351 EFI roller cams[/b]:

89-95 Mustang 5.0L **

Ford Part numbers: E8ZE-6250-CA / F1ZE-6250-AA / F4ZE-6250-DA

* Advertised Duration: 276 / 266

* Duration at .050 in.: 214 / 210

* Gross valve lift: 0.444 / 0.444

* Lobe separation: 115°

Can be found on eBay or Mustang forums cheap

Several 1993-95 Gen 1 Lightnings going 11 sec 1/4 times

Good idle, good torque

==

a reply by SMOOTH; "...

Comp Cams 31-255-5

* Duration at .050 in.: 206 / 212

* Gross valve lift: 0.462 / 0.474

* Lobe separation: 114

That's the cam I put in. I like it, it works well with my GT-40 heads and I still have a good idle. I recommend itLinkbar lifters can be used to retrofit a roller cam into an older block..."

====

Good 7.5L (460) EFI cam:

Comp Cam 34-255-5 (http://store.summitracing.com/partdetail.asp?part=CCA-34-255-5)

* Duration at .050 in.: 212 / 219

* Gross valve lift: 0.490 / 0.495

* Lobe separation: 114°

Stock 302

* Duration at .050 in.: 210 / 211

* Gross valve lift: 0.421 / 0.447

* Lobe separation: 116°

Stock 351

* Duration at .050 in.: 206 / 221

* Gross valve lift: 0.440 / 0.450

* Lobe separation: 115°

Lightning

* Duration at .050 in.: 198 / 208

* Gross valve lift: 0.416 / 0.445

* Lobe separation: 114°

96-01 Explorer 5.0L ** roller

Ford Part numbers: F4TE-6250-BA

* Advertised Duration: 256 / 266

* Duration at .050 in.: 186 / 197

* Gross valve lift: 0.422 / 0.448

* Lobe separation: 116°

Stock 460

* Duration at .050 in.: 193 / 206

* Gross valve lift: 0.438 / 0.459

* Lobe separation: 111°? (unsure at this time)

if you have the stock truck computer you are limited as to what you can do. The cams I listed above are about all you have to choose from. If you have a carb, or feel like spending $750-$3000 on programmable EFI you can pick out what ever cam you want.

If anyone buys a higher performance cam than the above limits for a stock truck computer, they will ruin the dependability of the truck. Fuel ratios will be way off, and idle will be so bad the owner will sell the truck

I'd stick to simple improving flow if you live in CA. My reasoning is that any cam that would pass CA inspection and keep the computer happy wouldn't be much of an improvment over stock.

[ A thread at another forum:

"am building a 351w +.030, world products alum heads 180cc, crane cams part number 444211, 208- 216@ .050 530 lift, edelbrock performer truck intake, bbk 56mm throttle body, 9.5 to 1 comp,1and 5/8" shorty headers from

fms, msd billet dist w remote module, 6al box and tfi coil,exhaust past headers is 2-1/2 into 3 inch + catco 3in" high flow cat converter dynomax bullet muffler.

will this work with sd injection or do i need maf, don't care whatever i need i will buy not made of money but my stuff has to be right.

OH I SHOULD TELL YOU I AM WORKING WITH AS YOU COULD PROBABLY GEUSS A 1993 BRONCO 351W SD E40D" ???

reply by Fireguy50

"Return the camshaft NOW, the Lobe separation of 112 degrees won't work with SD.

MAF will cost you close to $1000, a different cam will be under $200.

You can pick out a good SD camshaft and not miss any power.

Comp Cam 35-255-5 is a great hydraulic-lifter camshaft

Comp Cam 35-349-8 is a possible Hydraulic Roller Cam, but has lots of lift.

The 35-255-5 would be your best option! ....

use a 1.6 rocker arms, and check the valve clearance with putty."