Fox T-Bird/Cougar Forums

Technical => Engine Tech => Topic started by: dragon574444 on May 05, 2011, 08:17:19 AM

Title: SEFI swap on the way
Post by: dragon574444 on May 05, 2011, 08:17:19 AM
So, yesterday I went to get some nice Turbines off of craigslist, and the guy had a few boxes of Mustang parts. I've been wanting to do a SEFI, mass air swap and be done with my antiquated CFI system. So I bought a lower intake, upper intake, and a throttlebody. I also bought an E303 cam. I got a hell of a deal, just 60 bucks for the aformentioned parts, and 150 for the Turbines (probably not as much of a deal). Sadly he didn't have any exhaust or transmission parts.

Now, from what I read, the E303 might be a bit much for what I'm planning on doing. My car is my daily driver, no ifs ands or buts. I want a car that will pull hard from idle to 5K while still getting me no less than 15 MPG. I was thinking I could trade the E303 for a stock HO cam, but then I got thinking. My 84 block isn't a roller block. And it needs to be. I've read that I can buy a spider that will allow me to use roller lifters, which seems like what I want to do. But then I read some more into the subject, and apparently there is such a thing as a "small base" and "large base" cam? And there's no way at all I can use my 84 block with a large base cam?

I'm still all new to this, what say you? Will I need to buy an 85 or newer shortblock if I'm going to attempt to use a hydraulic roller cam? Or can I have a machine shop do some machining to make my 84 block accept a large base cam? Or am I just over thinking this...Oh, and I want to do a T5 swap at the same time; I've got more plans than money right now. :D
Title: SEFI swap on the way
Post by: 88CougarGT on May 05, 2011, 11:01:16 AM
I might be interested in your CFI.  I am building a megasquirt system, I have a chevy system now, might be interested in the ford.  Send me a PM when you get it stripped off the car.
Title: SEFI swap on the way
Post by: 88CougarGT on May 05, 2011, 11:35:54 AM
PS.  On my coug I have World Windsor Jr heads, Typhoon intake, 19#, A9L and MAF, flat top pistons, and a Trickflow Stage 1 cam, T5 and 2.73 gears (yeash....3.73s on the way).  I get at around 16-17 in city traffic.  Much better on the freeway.  The CFI is for my 67 mustang coupe.

IMHO there are better cams out there than the ford letter cams.  I kinda wish I had just kept the stock HO cam and advanced it.  Check out clickclick (http://"http://www.clickclickracing.com/forums/forumdisplay.php?22-Engine-Tech") and I will try to dig up another site that is good reference.  With my TFS1 i have to idle around 900 to 1000 or the computer bitches and hunts for an idle.  Very annoying.  I need a tune but since its my beater, it probably will never get it.

There are some very good non-roller camshafts out there.  If you plan to go cheap and use your existing engine, seek out one of those.  Minimizes downtime.  You will need new heads though.  A cam won't help much without better heads.  Otherwise, what I did was I bought a used mustang engine on CL and slowly built it up on a stand.  Then swapped it in one weekend.  The mustang engine will get you at least the E7 heads which are better than the E6s you have on it now.
Title: SEFI swap on the way
Post by: Beau on May 05, 2011, 03:02:47 PM
I'd say a stock HO cam will be hard to beat for off idle power, but i can't recall when it runs out of steam...an E cam makes more power at a higher RPM...

For a daily, I'd probably stay with the HO cam, it's what I have, and no complaints...

I've got a speed density eec from a Mark VII if you decide to not go to mass air....
Title: SEFI swap on the way
Post by: Aerocoupe on May 05, 2011, 05:06:09 PM
You will be better off with a roller block from an 85+ car.  I think the Crown Vics had them this early as well.  E cam is not that big of a cam and you can retard it to build some bottom end torque quicker.

E Cam Specs here:

http://www.fordracingparts.com/download/charts/85.pdf

Stock HO cam speces here:

http://forums.mustangworks.com/f8/5-0-stock-cam-specs-3083/

http://forums.mustangworks.com/f80/stock-5-0-roller-cam-specs-49778/

http://www.stangnet.com/mustang-forums/577332-factory-camshaft-theory.html  -  look at post #6

http://www.allfordmustangs.com/forums/5-0l-tech/62897-stock-cam-specs.html  -  again TMoss really knows his stuff.

Hope that helps.

Darren
Title: SEFI swap on the way
Post by: dragon574444 on May 05, 2011, 05:15:08 PM
I'll definitely keep all my CFI stuff for you, 88CougarGT, but I wouldn't hold your breath. This is gonna take at least a month or two. At least. I want to have all my ducks in a row before I tackle this project, because I'll need to drive it to work Monday morning. I'm gonna have to get a roller block, I don't want flat tappets. Sure they get the job done, but I think the extra dough will be worth it. Maybe I'll try to find an Explorer engine.

Thanks for the links Aerocoupe, I'll give them a read.
Title: SEFI swap on the way
Post by: 88CougarGT on May 05, 2011, 05:22:36 PM
It's ok.  My mustang has no fenders, battery, coolant, alternator, electrical system, or floors.  So it might be a while before I need anything anyway.
Title: SEFI swap on the way
Post by: dragon574444 on May 05, 2011, 05:34:48 PM
Haha, alright then. The CFI stuff is all yours once I go ahead with my plans.
Title: SEFI swap on the way
Post by: vinnietbird on May 05, 2011, 05:37:20 PM
My E303 HATED the stock torque converter. The cam was great though.
Title: SEFI swap on the way
Post by: EFFalcon on May 05, 2011, 06:55:44 PM
will keep an eye on your progress.
i'm amazed at the mid series changes that were done to these cars.
Title: SEFI swap on the way
Post by: thunderjet302 on May 07, 2011, 03:44:56 PM
You can actually run a standard roller cam in a non roller block. You just need these: http://www.summitracing.com/parts/TFS-21400006/ They are taller than stock lifters so you will need to measure pushrod length. The advantage is you won't need the spider and retainers or a reduced base circle cam.
Title: SEFI swap on the way
Post by: dragon574444 on May 07, 2011, 09:58:53 PM
Wow, those are expensive. Definitely an option, but let's face it; I bought my Thunderbird for less money than those lifters. I think I could find a used short/long block for less than that.