How to pick a CAMSHAFT for EFI - Page 5 - Ford Bronco Forum
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post #81 of 114 (permalink) Old 04-24-2014, 12:24 AM
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Ok guys at the risk of.... you should read the whole thread reactions ..by the way I did and Im still confussed.. Im rebuilding a 88 5.0 EFI. The stock cam and lifters are toast. Are there any of the after market cams worth the money? Or should I just replace it with a stock one? The motor will be bored 30 over and going to run a set of shorty headers. Comp Cams makes 31-255-5 says computer controlled cam works with the speed density
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post #82 of 114 (permalink) Old 07-01-2014, 09:39 PM
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can anyone tell me what heads come stock on a 94 5.0 bronco please
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post #83 of 114 (permalink) Old 12-11-2014, 02:32 PM
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so for a 351 with a roller cam, replacing the stock for a comp cam 35-512-8 would be an uograde but still perfectly compatible for sd? Anyone running this cam? It mentions for a 302 on summit but I assume it will work fine in a 351?

http://www.summitracing.com/parts/cc...FQNk7AodjkQAuQ

Never ending 1 ton f150 build, bobbed 1 ton frame, leaf sprung d60/10.25, chevy springs and brakes, 44 boggers http://www.supermotors.net/registry/27093/84418

and the old build rip http://www.youtube.com/watch?v=W9O_TqyVYVg
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post #84 of 114 (permalink) Old 01-10-2015, 09:25 PM
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Bronco Info: 96 Bronco (5.8 DD E4OD), 88 Bronco Mudder (Engineless), 90 F250 (Explorer 5.0 4R70W)
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im planning on a 418w stroker build for my 96 and I need to choose a cam. Its going to be a DD so it doesn't need crazy high end and probably needs good mid-low end for when in overdrive at high speeds and also good for towing. im going to probably have a new torque converter made once I have components for the build chosen. im gonna keep it MAF EFI but will eventually get a tune done on it.

I haven't chosen a set of heads yet so if you have recommendations that to, that would be great. ill probably get a set of Trickflow twisted wedge aluminum heads but not sure what size runners or chamber.

this is the stroker kit.
http://www.coasthigh.com/Ford-418W-R...4-sf-f418w.htm


-----96 5.0 E4OD--------------88 5.8 C6--------------96 5.8 E4OD------
---------KIA-------------------Mud/Trail---------------Daily Driver------
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post #85 of 114 (permalink) Old 02-24-2015, 03:02 PM
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Bronco Info: 1996 bronco 351w . I call it the LIBERAL CRUSHER!!
I have a rebuilt 351 roller short block and was wondering about what roller cam to go with to give me some low end grunt. looking for more torque than hp. my project consists of lightning gt40 heads and 161 roller rockers and an edelbrock efi intake with twin 56 mm tb from bbk. thanks for your input.

r
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post #86 of 114 (permalink) Old 02-24-2015, 03:04 PM
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Bronco Info: 1996 bronco 351w . I call it the LIBERAL CRUSHER!!
go with the 170s it would be better for torque. as far as cam selection im in a pickle too.

r
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post #87 of 114 (permalink) Old 02-27-2015, 05:52 PM
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Bronco Info: 1993 XLT 5.8 e4od/7.5" on 37's/4:56/shackle flip/3G/efan/cust steer/punisher v/b/saginaw/redhead
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I bought a roller engine with GT40 heads. I have SD now and do NOT want to swap to MAF. Does anyone know if the cam suggested in post #1 "Ford Part numbers: E8ZE-6250-CA / F1ZE-6250-AA / F4ZE-6250-DA"
work for this, or have a suggestion of which cam will be good to use without tuning???

Thanks!

___


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post #88 of 114 (permalink) Old 03-03-2015, 12:55 PM
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Bronco Info: 1996 bronco 351w . I call it the LIBERAL CRUSHER!!
now I have a set of twisted wedge heads. probably going with an E cam now.

r
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post #89 of 114 (permalink) Old 03-04-2015, 12:41 PM
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Bronco Info: 1990 F150, 5.8 w/GT40X heads, Lightning intake, E4OD, 33" tires, detroit locker rear & true trac fro
Quote:
Originally Posted by nola96 View Post
now I have a set of twisted wedge heads. probably going with an E cam now.
I am not cam guru or Dr., but from my experience and reading the alphabet cams from Ford are not really 4X4 oriented. They begin making power and torque higher in the rpm range than you will most probably find appealing.

Just my opinion, take it for what you want.

tim
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post #90 of 114 (permalink) Old 04-29-2015, 06:59 PM
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Bronco Info: 95 XLT Sport 96 351w/e4od obd II Long tube's solo stage 5 with kings 35's & 4.88
This may help some of you with stroker cam/head combo's ?
My 427w stroker kit came from http://www.coasthigh.com/ I used the 205cc heads

This is a custom grid for a stroker motor bronco if falls off a 5800 rpm

Comp Cams
1.800.999.0853
James Fry just tell him what you are running or wanting to do , Ps he will call back
with afr 195 heads 58cc use cam xfi 35000-9
228 @ 50
576 lift intake
234 @ 50
570 lift exhaust
112 ls at 108 center
with afr 205 heads 58cc use xfi 35000-9
224 @ 50
573 lift intake
230 @ 50
568 lift
112ls at 108 center
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post #91 of 114 (permalink) Old 07-19-2015, 12:32 AM
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Bronco Info: 1986 Ford Bronco 302 EFI
Should I advance my cam further than straight-up?

I am finally getting back to a 1986 302 EFI rebuild. I'm installing a Melling MTF-1 mild upgrade. Not sure how this will work with the current EFI-ECC, but will cross that bridge when I get to it.

Right now, I'm wondering about installing the cam with additional advance. I'd have to buy another timing gear set that has advanced keyslots, because I don't trust myself enough just to move how the timing marks line up.

so.. Does any one have any experience with advancing cam timing with a similarly sized cam, or should I just install it straight up?

Its a 204 Int / 214 Exh @0.050, 112 Lobe Separation. I'm not sure how much advance is ground into this cam. I'm assuming 4 degrees. I didn't get this with a cam card (probably not smart).

Thanks for your thoughts and experiences!

1986 FSB with a 302 E6SE ('86 Thunderbird) Block +.030, '85 E5TE Heads, SEFI/ECC, C6 Auto Trans definitely a work in progress.
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post #92 of 114 (permalink) Old 07-19-2015, 10:45 PM
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Bronco Info: 1986 XLT - 408w, TFS 170s, TFS Camshaft, C6
You'd do that engine a world of good upgrading to at least some E7TE heads..

Speed density SEFI likes a LSA on the cam of 114 or a little more from what I've seen, you might get away with the 112.

You should be able to find the cam card online or call them to see if any timing is built into the camshaft, that's what I'd do.
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post #93 of 114 (permalink) Old 07-23-2015, 07:42 PM
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I called Melling. Its got a 4 degree advance ground in. The guy (George, I think) recommended just timing it straight up, but didn't really know my application. I'll probably just install it straight up, though, as I already have the timing set without extra keyways.
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post #94 of 114 (permalink) Old 08-09-2015, 02:04 AM
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Quote:
Originally Posted by Tiko433 View Post
OK guys at the risk of.... you should read the whole thread reactions ..by the way I did and I'm still confused.. I'm rebuilding a 88 5.0 EFI. The stock cam and lifters are toast. Are there any of the after market cams worth the money? Or should I just replace it with a stock one? The motor will be bored 30 over and going to run a set of shorty headers. Comp Cams makes 31-255-5 says computer controlled cam works with the speed density
I am of the same mind - same motor. There are just not that many aftermarket cams for a SD EFI.

So according to the original comments up front, I'll likely use a stock cam to maintain best vacuum signal, but switch to Comp Cams steel roller tipped rockers at 1.72 ratio. That will generate a bit more lift and slightly increase the valve actuation velocity.

That paired with an extremely good 4-angle valve job with a small back cut on the valves to aid in low flow and some minor port/runner massaging to smooth things out out to do it :)
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post #95 of 114 (permalink) Old 08-09-2015, 02:09 AM
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Cool

Quote:
Originally Posted by gwidion View Post
I am finally getting back to a 1986 302 EFI rebuild. I'm installing a Melling MTF-1 mild upgrade. Not sure how this will work with the current EFI-ECC, but will cross that bridge when I get to it.

Right now, I'm wondering about installing the cam with additional advance. I'd have to buy another timing gear set that has advanced keyslots, because I don't trust myself enough just to move how the timing marks line up.

so.. Does any one have any experience with advancing cam timing with a similarly sized cam, or should I just install it straight up?

Its a 204 Int / 214 Exh @0.050, 112 Lobe Separation. I'm not sure how much advance is ground into this cam. I'm assuming 4 degrees. I didn't get this with a cam card (probably not smart).

Thanks for your thoughts and experiences!

1986 FSB with a 302 E6SE ('86 Thunderbird) Block +.030, '85 E5TE Heads, SEFI/ECC, C6 Auto Trans definitely a work in progress.
Not enough lobe separation. Your truck will likely not be happy ...

Most aftermarket cams are ground with some advance. 4* is quite common. Just use a good timing set and install straight up.

BUT, to enhance the vacuum signal and generate more low speed cylinder pressure with that 112* LSA, you might have to add some more advance to get a reasonable idle ... Maybe 3* more ...

You are now entering the Twilight Zone (to find out what will make that cam acceptable...)
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post #96 of 114 (permalink) Old 08-09-2015, 02:21 AM
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Does anyone have the Lobe Separation Angle (LSA) for the FoMoCo M-6250-A311 camshaft?
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post #97 of 114 (permalink) Old 08-15-2015, 11:57 AM
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Wink Cam Idea ...

So it's hard to find performance cams with a 114* LSA which is needed for the Speed Density EFI system. And, we are supposed to keep the lift and duration numbers conservative. But, what about letting the lift and duration numbers out a little bit and controlling them with Rhoads Lifters?

Idea - Summit Racing 3601 camshaft. Operating range 1,88 to 5,500. 218*/228* duration @ 0.050 with 0.471/0.471" lift - 114* LSA.

A little more adventurous? Pair it up with some Comp cast steel roller tip rockers with 1.72 ratio and you get 0.506 lift

A little to big to meet our basic criteria for idle quality and low speed, but with Rhoads Lifters it becomes 206*/216* @ 0.050 with a lift of 0.456/0.456" - still on 114* LSA at idle. It'll come back to full spec at about 3,500 and by that point the bad juju of bigger duration is moot.

I think it might work OK and I think I'll try it on my 302 build for my 1988 Bronco scheduled for next year. I'm going pair it with a pair of worked over E6 heads to get the swirl, but I will pull a bit of shrouding out by cutting the chamber wall back 0.050 around the intake and mill the heads down to 62cc
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post #98 of 114 (permalink) Old 08-17-2015, 01:57 AM
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Wink

So I wrote a PM to CamKing on another web site about my future motor overhaul:

I'll be rebuilding my SBF (302) next year for my 1988 Bronco. It has 212K on it now. Bottom end is getting a bit noisy on cold start after sitting for a week or two...

So it's a Speed Density EFI (SD EFI). I won't be changing that - too much hassle in Calif...

I'll be stepping back to 1986 E6SE or E6TE heads with the "high swirl" chambers. This motor is all about small inch grunt. Will prolly never see the tall side of 3,500. It tows my outboard boat and goes off road.

The Ford spec for SD EFI is 116* LSA because the system is so vacuum signal dependent. I will need a new cam as mine is worn. I plan to run Comp's steel ball-socket roller tip rockers in 1.7 ratio. So I'd like to get a bit more cam than bone stock, but nothing above 205@0.050 with a max lift of 0.489" figuring the 1.7 rockers.

This is a flat tappet system. What can we do?

Broc


---------------------------
And here's his recommendation (a serious cam guy):

Here's what I recommend:
Cam# F302, H622279-114
194/194 @ .050"
.279"/.279" Lobe Lift
.474"/.474" Valve Lift w/1.7 rockers
114 LSA
Price: $249.69

Mike Jones
Jones Cam Designs
(704) 489-2449
www.jonescams.com


So the bottom line is that his cams are extremely well regarded. He's got a lot of guys in the winners circle. Paired with Crower Cam Saver Lifters, I'm sure it would run well over 200K on the rebuild :)

So it's either Mike's proven design, or an experiment with Summit's somewhat too large cam and Rhoads Lifters...

Hmm - need help deciding ...
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post #99 of 114 (permalink) Old 08-17-2015, 07:08 PM
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Smile

So I queried him about the 116* -> 114* shift in LSA... Would it negatively affect the SD EFI? Here's his reply:

The seat duration is so short(248/248), that it'll have a stronger vacuum signal than the stock cam.

We normally run a little more duration, and 1.6 rockers, but this will make more low-end power
(the cam described in previous post).

So I'm thinking this is the combo for trailing and towing :)
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post #100 of 114 (permalink) Old 09-01-2015, 11:06 PM
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For folks wanting to go roller (not me), over at FTE, they are talking rollers that are SD EFI compatible. This one seems to be a favorite: http://www.summitracing.com/parts/cc...12-8/overview/

Discussion here: http://www.ford-trucks.com/forums/13...-camshaft.html The main point is to pull and entire roller cam assembly out of a 94+ T-Bird or equal and swap it in as a used system. I'm OK with that if it all looks good
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