Fox T-Bird/Cougar Forums

Technical => Engine Tech => Topic started by: Mr-Mach1 on November 27, 2010, 03:15:01 PM

Title: Convert SO to HO ?
Post by: Mr-Mach1 on November 27, 2010, 03:15:01 PM
I've been trying to find a decent HO 5.0 engine but they are hard to come by now a days in NY. I even tried to buy a complete parts car but there aren't many left The ones I've found have 100K+ miles and are $700+. I think an engine with that kind of mileage should be rebuilt. A coworker has a HO long block core with GT40 aluminum heads and E303 cam for which he wants $800. Is that a fair price ? I don't plan on any racing just street use like maybe a daily driver.

I'm thinking I can convert my SO by installing a roller cam, GT40P heads and Explorer intake. Are there any other difference's ? I have a Windsor Fox mass air conversion harness I'll install as well.

Thanks
Title: Convert SO to HO ?
Post by: vinnietbird on November 27, 2010, 04:19:09 PM
Our stock engines have flat top pistons,so be careful with cam and head choice. You can install a Mustang H.O cam and I'd bet GT40 heads (or "P" heads) without issue. As far as the $800.00 engine...if it's in good shape,I'd say yes,it's worth it. Maybe you could talk him down in price a little Money in the hand can speak pretty loudly.
Title: Convert SO to HO ?
Post by: vinnietbird on November 27, 2010, 04:20:32 PM
Oh, if you install the GT40-P heads,Explorer intake and H.O Mustang cam,you'll have a strong runner and you won't need Mass Air. You will need to replace the valve springs in a big way. Stock explorer springs are way to soft for an H.O engine.
Title: Convert SO to HO ?
Post by: hypostang on November 27, 2010, 04:25:06 PM
I would keep looking ,and IMHO  a rebuild is not necessarily a "must do" on a 100K HO .
 I just did an HO conversion (less heads) on my 178k SO  , as long as the engine has good compression and oil pressure there should not be a lot to worry about .

Oh yeah don't rule out a Mark VII LSC as an engine donor they have HOs and are usually treated with a a lighter foot than 5.0 stangs
Title: Convert SO to HO ?
Post by: vinnietbird on November 27, 2010, 04:29:36 PM
if you go with the GT40 heads and a cam with the Explorer intake,you can do that for super cheap,and get a lot of happiness from it.
Title: Convert SO to HO ?
Post by: jandmmustangs on November 27, 2010, 06:50:32 PM
Wow, not to be a dick but $800 for a running HO is INFLIPPINGSANE.  Dealing with stangs all the time its hard to get $200 out of a good running HO
Title: Convert SO to HO ?
Post by: Haystack on November 27, 2010, 06:54:17 PM
aluminum gt40 heads are worth more. I would still try to talk him down, but that might be a fair price where your from.
Title: Convert SO to HO ?
Post by: Mr-Mach1 on November 27, 2010, 07:17:12 PM
Quote from: jandmmustangs;343410
Wow, not to be a dick but $800 for a running HO is INFLIPPINGSANE.  Dealing with stangs all the time its hard to get $200 out of a good running HO

 
How far are you out of NYC ? I'm not opposed to a road trip if it's not too far ? Also looking for 94 Front spindles with brakes and rear axles w/disc brakes. Do you have ?
Title: Convert SO to HO ?
Post by: Mr-Mach1 on November 27, 2010, 07:23:19 PM
Quote from: Haystack;343413
aluminum gt40 heads are worth more. I would still try to talk him down, but that might be a fair price where your from.

 
If it were a running engine I would buy it but he said it has rust on the cylinders from sitting outside so if I'm going to pull it apart to hone the cylinders I'll rebuild it.

What are aluminum GT40 heads worth ?
Title: Convert SO to HO ?
Post by: 20thanniver-ls on November 27, 2010, 07:33:25 PM
Quote from: Mr-Mach1;343423
If it were a running engine I would buy it but he said it has rust on the cylinders from sitting outside so if I'm going to pull it apart to hone the cylinders I'll rebuild it.

What are aluminum GT40 heads worth ?

And he still wants $800 for it? That guys got some high hopes. It may be worth your while to travel outside of NYC to find a motor/donor car. I paid $500 for my '87 LSC with an HO motor. $800 for a non-running needs work engine is insane.
Title: Convert SO to HO ?
Post by: Haystack on November 27, 2010, 07:40:20 PM
I missed the rusting cylinders...

There worth slightly more then gt-40's. New they were twice the price. One of the oldest after-market heads out there.
Title: Convert SO to HO ?
Post by: jandmmustangs on November 27, 2010, 08:00:57 PM
Quote from: Mr-Mach1;343420
How far are you out of NYC ? I'm not opposed to a road trip if it's not too far ? Also looking for 94 Front spindles with brakes and rear axles w/disc brakes. Do you have ?


Im about 2hrs outside of NYC.  I don't have much since the divorce, but the local U-Pull yards always have good stuff in em.  I can check the stock for ya if you want.
Title: Convert SO to HO ?
Post by: Mr-Mach1 on November 27, 2010, 09:39:39 PM
Quote from: vinnietbird;343382
if you go with the GT40 heads and a cam with the Explorer intake,you can do that for super cheap,and get a lot of happiness from it.

 
What is a fair price for an Explorer intake & heads ?
Title: Convert SO to HO ?
Post by: vinnietbird on November 27, 2010, 09:46:05 PM
I've seen GT40 heads for $250 and up. I've seen the GT40P heads cheaper than the GT40's, but the "P" heads are better. Most people are scared of them due to the plug angle. It's really nothing to worry about. There are Explorer intakes all over for less than a hundred bucks. You may be able to find a complete Explorer?Mountaineer engine for cheap if you shop around. My Mountaineer engine had less than 15,xxx miles on it and I got it totally complete for $125.00. It's sitting between the fenders of the Sport right now.
Title: Convert SO to HO ?
Post by: Beau on November 28, 2010, 09:37:56 AM
Quote from: vinnietbird;343447
find a complete Explorer/Mountaineer engine for cheap

This.
Best bet, and I can get one around here for about 250 if I pull it out...how many do you need? lol

Get rid of the coil packs, put a distributor and HO cam in, and badda bing.
Title: Convert SO to HO ?
Post by: TurboCoupe50 on November 28, 2010, 09:49:49 AM
Quote from: Mr-Mach1;343423
If it were a running engine I would buy it but he said it has rust on the cylinders from sitting outside so if I'm going to pull it apart to hone the cylinders I'll rebuild it.

What are aluminum GT40 heads worth ?

A good used set of ALUMINUM GT-40 heads are worth at least $400 but since it's had water in it, they probably need a lot of work...
Title: Convert SO to HO ?
Post by: Mr-Mach1 on November 28, 2010, 12:20:37 PM
Quote from: ThunderbirdSport302;343509
This.
Best bet, and I can get one around here for about 250 if I pull it out...how many do you need? lol

Get rid of the coil packs, put a distributor and HO cam in, and badda bing.

 
Where are you located? At $250 for a good engine I'd buy two or three . Any 94-95 mustangs I can pick for a 5 lug swap ? If so sounds like a road trip.
Title: Convert SO to HO ?
Post by: jandmmustangs on November 28, 2010, 04:38:34 PM
I live up the street from a junkyard.  My property abuts theirs.  Lucky me.  They have a few sn95 stangs in right now  I will tell you though.  If you want to do the swap hit the U-Pull-Its.  I get good deals, but not great from the junkyard.  The one local U Pull It has 15 or so SN-95 and new edge stangs in it.
Title: Convert SO to HO ?
Post by: Mr-Mach1 on November 28, 2010, 09:37:11 PM
Quote from: jandmmustangs;343548
I live up the street from a junkyard.  My property abuts theirs.  Lucky me.  They have a few sn95 stangs in right now  I will tell you though.  If you want to do the swap hit the U-Pull-Its.  I get good deals, but not great from the junkyard.  The one local U Pull It has 15 or so SN-95 and new edge stangs in it.

 
What are the name & addresses of the yards so I can plot a course ?  Maybe I'll shoot out next weekend. How do you go about pulling an engine in these yard ? Do they supply an engine hoist or use a fork lift ? Are the cars off the ground ? It would be great to score a couple engine, GT rear axle & front spindles. I may even take a day off of work for the trip if things look promising.  What's a new edge stang ?
Title: Convert SO to HO ?
Post by: RunninWild on November 28, 2010, 09:55:18 PM
Quote from: Mr-Mach1;343606
What's a new edge stang ?

 
a '99-'04 mustang.


I haven't been luckyenough to see a new edge stang in any of the yards around here, but then again, it's been a while...
Title: Convert SO to HO ?
Post by: Mr-Mach1 on January 24, 2011, 11:21:02 PM
I've been hunting for a HO or Explorer 5.0 for months now. I found a 2001 Mountaineer 5.0 for $350 with 84k miles about an hour away. When I finally found time to go get it it snowed almost 2 feet. That snow hasn't all melted yet and there's more to come. Now I've found two locally for $250 each but my van is still snowed in. Life is fickle. I also found a new E303 cam for $165 which I think is a good deal. Hopefully I can get it all before someone else does.
Title: Convert SO to HO ?
Post by: Kitz Kat on January 25, 2011, 04:01:05 PM
You know you can buy a new/rebuilt budget short block for $699. That will have valve reliefs, so head and cam choice opens up a bit.
Title: Convert SO to HO ?
Post by: 87tbird5.0 on January 26, 2011, 03:07:59 PM
do you have to use a explorer intake or can you use a regular cobra 1? and what are other head options are out the other than the gt40p? i know it would have to have a ho cam is there any others maybe something a little more loppy?and will these work with the speed density computer and still be a relighable daily driver?
Title: Convert SO to HO ?
Post by: vinnietbird on January 26, 2011, 05:20:52 PM
On an Explorer engine,you can run any small block Ford intake (meaning any intake that'll fit a SBF). It's a 5.0. I've had a Cobra intake,stock intake,two explorer intakes,and now (for now) a GT-40 intake. I have a Mountaineer engine (same as explorer). It was less than 15,xxx miles when I bought it and installed it this past summer. Great engine. I also added and replaced parts like the cam,intake,added a distributor,ported heads,etc. With Speed Density,your cam choices are limited. Just add Mass Air and go with a bigger cam. Easy stuff. I was badgered to install Mas Air,and had my reservations, but it was super easy,and well worth it (If you're going with a bigger cam). The GT40-P heads are very nice,and not a big deal. People seem scared of them,but I have had no issues at all and use BBK shorty enequal length headers. I have  Trick Flow Stage 1 cam. You'll also need  better valve springs if you use Explorer/Mountaineer heads. Those that come stock are NOT for high performance applications.
Title: Convert SO to HO ?
Post by: 87tbird5.0 on January 26, 2011, 05:31:08 PM
ok but could i do like a cobra intake and ho cam and e7 heads and still have speed density.  i dont want to hop it up alot without rebuilding it first,  it has 220,xxx on it now and i dont have the money to rebuild it but i can get the intake cam and heads for next to nothing off my friends mustang im just wondering of it will still be religable for a few years
Title: Convert SO to HO ?
Post by: vinnietbird on January 26, 2011, 05:49:51 PM
You can keep the H.O can and swap the heads to E-7's and add the Cobra intake....or Explorer, and still keep Speed Density with no problems. You'd probably be very surprised at much more fun the car will be with that setup....and a good exhaust. Stock Mustang H.O headers are fine,especially if you're on a budget. Aftermarket headers are also good,but not really necessary with the E-7 heads and Cobra intake. You'll also need a Speed Density Mustang H.O computer,and 19# injectors (I think I have some of those,and I have a Cobra intake on their way to my house right now).

Also,you really need to swap on a new timing chain. Get a new double roller timing set. All of this can be done easily in an afternoon if you have all of your parts present and ready to go.
Title: Convert SO to HO ?
Post by: 87tbird5.0 on January 26, 2011, 06:05:14 PM
i know i have 19# injectors in cuz they are orange and i have bbk shorty headers on now with a h pipe. is the lower intake different in a cobra intake or they the same size?  hard part will be finding a computer
Title: Convert SO to HO ?
Post by: vinnietbird on January 26, 2011, 06:10:39 PM
The Cobra/GT-40/Explorer all share the same lower intake. The H.O intake is a totally different piece. Now,if you have a Cobra upper and an Explorer lower,it may be necessary to have the hole in the number 5 runner on the lower drilled and tapped for the ACT sensor which is no big deal at all.
Title: Convert SO to HO ?
Post by: vinnietbird on January 26, 2011, 06:17:40 PM
With your current engine already having headers and 19's,that's a head start. I do have a question...why do you have 19's on a non-H.O engine? Usually the SO engines don't run so great with them. As far as Speed Density computers. Check Ebay. i see them quite often. Look for a DA-1. I have always been taught that is the best. I used one of those until I went with Mass Air.
Title: Convert SO to HO ?
Post by: 87tbird5.0 on January 26, 2011, 06:30:30 PM
9 years ago my brother had to put new intake gaskets in and he had the old injectors tested and 2 were shot so he put 19# in it use to run weird when it had the stock air system and exhaust but with the cold air intake and headers and h pipe it seems fine it get messed up when there is a bigger temp change from one day to the next.  some days it is a beast and some days its like wtf and it hates ideling for longer periods of time