i was wondering what is the difference between a 302 and a 302 H.O is there a difference in the bottom end or is it just the heads because i am having problems with my 89 mustang 302 H.O so i bought a 89 crown vic for the motor and it has a plain 302 also i am going to change the fuel injection to carburated will that make me lose horsepower or gain or stay about the same
if tuned right you will get a little more hp out of the carb but thats if your reall good at tuning.
swap the heads thats gonna be the main difference in a ho and a reg 5.0 theres more like the timing chain cam and a few other small things oh yeah the ho has forged pistons in 89 plus a thiner head gasket. theres more but i can't remember off the top of my head.
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ORIGINAL: MoparMan87
oh no... I just cut mikehawke with a knife.... and im not drunk...
If sex is a pain in the @$$ then your doing it wrong. 00 GT 97 GT
I can't be certain about the bottom end. I know you have cam/timing changes. The convertion to a carb. is a step backwards with street drivability. Fuel injection can give a better burn and smoother power. If you want to make big power, carbs and EFI will do it. Price will be different. Don't change to a carb. unless you plan on making big power. Both carbs. and EFI will make big power. If you learn how to tune the fuel injected car, you can save money in the beginning. Everyone can tell you that there are too many variables when you change engine parts. Chatting E-mail is too hard to say what parts do what.
For Sale or Trade: 390 Long Block w/ forged pistons and rods unassembled. PM me if interested, $350obo, or looking to trade for perf. parts (intake, heads, exhaust) or wheels (mach 1, cobra)
the heads are the same less the valve springs as far as I have ever seen the HO motor dose not have anything special about the heads all 5.0 heads 79-93 are the same except for GT 40 heads or the GT40P heads now the E6 heads are diff. then them all and E5 heads are the same as E7. The HO will be a roller motor and the non HO could be a roller or a flat tappet cam motor the pistons are diff. more then just forged or cast as the compression is different also the timing chains are different. I have found that the CFI injection motors are flat tappet cams and the SFI motor cams are roller but I have not had all the motors built apart so who knows what Ford did. just my .02
the heads are the same less the valve springs as far as I have ever seen the HO motor dose not have anything special about the heads all 5.0 heads 79-93 are the same except for GT 40 heads or the GT40P heads now the E6 heads are diff. then them all and E5 heads are the same as E7. The HO will be a roller motor and the non HO could be a roller or a flat tappet cam motor the pistons are diff. more then just forged or cast as the compression is different also the timing chains are different. I have found that the CFI injection motors are flat tappet cams and the SFI motor cams are roller but I have not had all the motors built apart so who knows what Ford did. just my .02
um check agian there. all those casting numbers represent a change. theres a diffence between a e5 e6 e7 casting.
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ORIGINAL: MoparMan87
oh no... I just cut mikehawke with a knife.... and im not drunk...
If sex is a pain in the @$$ then your doing it wrong. 00 GT 97 GT
uh well yes the casting numbers are diff. e5 = 85 e6= 86 e7 =87 the ports and valve size are the same. Like I said the 86 heads are totally different (JUNK) as far as the rest they look to be the same to me.and all the valves sizes are the same.As far as a performance gain in the HO heads and the Non HO heads all but the 86 there is nill to none other then the one mold was better then the other factory cast screw ups(very little diff). all but the GT 40 and GT40 P. just me
< Message edited by uedlose -- 2/24/2006 5:23:24 PM >
some years like i think 85 86 had a 351. but the main differnece in a interceptor is the cooling they have large radiators and tranny coolers and some had oil cooler and of coarse a big alt.
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ORIGINAL: MoparMan87
oh no... I just cut mikehawke with a knife.... and im not drunk...
If sex is a pain in the @$$ then your doing it wrong. 00 GT 97 GT
I have a 1965 mustang 6 cylinder that I want to convert to a 302. I need to know what transmission and rear end will fit. I would like to put a five speed transmission in if possible.
The non-HO engines have different pistons, no valve reliefs, meaning that if you run E7's, youre VERY limited on your cam choice. The heads *should* be E6SE heads, which have heavily shrouded valves, and are a canted design, meaning the valves are in the heads in a different angle. ALL 5.0's from 1985 on are hydrolic roller engines. The firing order between the standard ouput and HO are different also, the SO uses an early 302 firing order if i remember correctly. The camshaft in the standard output is also a piece of junk, very low lift and duration. The HO also did get a double roller timing chain, while the SO got just a standard chain.
If you have any other questions, feel free to PM me, i actually have a standard output 5.0 on an engine stand right now, that im doing a mild build to, since i have it laying around already.
The non-HO engines have different pistons, no valve reliefs, meaning that if you run E7's, youre VERY limited on your cam choice. The heads *should* be E6SE heads, which have heavily shrouded valves, and are a canted design, meaning the valves are in the heads in a different angle. ALL 5.0's from 1985 on are hydrolic roller engines. The firing order between the standard ouput and HO are different also, the SO uses an early 302 firing order if i remember correctly. The camshaft in the standard output is also a piece of junk, very low lift and duration. The HO also did get a double roller timing chain, while the SO got just a standard chain.
If you have any other questions, feel free to PM me, i actually have a standard output 5.0 on an engine stand right now, that im doing a mild build to, since i have it laying around already.
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Wow, a lot of misinformation here.
And it sounds like you are giving it out not all 5.0 motors from 85 and up are roller. I have had truck motors apart that where not roller and canted valves have not been on a 302 since a real Boss motor was built and the truck motor also had E7 heads it was a 87. The 86 heads where called turbo swirl and yes they had very shrould valves.also 86 HO pistons had no valve relifes and the other non HO motors had valve relifes and a bigger dish in the top.
< Message edited by uedlose -- 2/26/2006 10:48:57 AM >
ORIGINAL: uedlose And it sounds like you are giving it out not all 5.0 motors from 85 and up are roller. I have had truck motors apart that where not roller and canted valves have not been on a 302 since a real Boss motor was built and the truck motor also had E7 heads it was a 87
Dude, youre a knucklehead.
Alright, we all know Ford didnt do things as they should have. The 85 302s were supposed to ALL get roller setups, the problems with that is, you can have a 1985 Ford Truck, you look at the build date, it can be in April of 84. So you have a 1984 Truck, sold in 1985, under the 1985 model year. The next model year begins in september or so, when all the new cars go on the lots. So the 2007 model year will begin in september or so. Look at the casting numbers on the block. Also, what flywheel did it have? What balance?
Im really amazed at how you flaunt some knowledge here. In 1987, the mustangs got mostly the same engine as the F150, other than camshaft, intake manifold, and some other odds and ends. The block casting number would be E7TE, the first letter E=1980, 7 is the specific year=1987, TE=truck useage. The head casting number is also E7TE, meaning they are the same heads as the trucks used.
The standard output cylinder heads are an E6SE part number, meaning they were designed in 1986, designated for car useage. These were the heads they used in all of the STANDARD OUTPUT 5.0's. Cars such as the crown vic, grand marguis, thunderbird, cougar, and other cars with the non-high output 5.0's.
Maybe canted isnt the word im looking for, but they are at a complete different angle in the head, very similar to how the Twisted Wedge heads work.
also 86 HO pistons had no valve relifes and the other non HO motors had valve relifes and a bigger dish in the top.
There you go editing your post on me while im replying. The 86 had totally flat top pistons. The non-HO engines had a dish in the top, but no valve reliefs. If it wasnt 20 degree's out, i could go flip my 5.0 over, and take a picture, theres a dish and no valve reliefs.
Look you peter princess. What should of been done and what was done is just the way it is. Ford did strange things yes that's why I said the 87 truck was not roller you said ALL well your wrong.I know how to read dates on casting number. Also the truck was also 50 oz balance.yes the 86 was a full flat top piston. And the HO motors had 4 valve reliefs and a small dish and the Non HO motors have a larger dish and reliefs. Now I do have a carbed 85 motor factory HO motor that has 4 reliefs and is a full flat top. I have also had a 87 up Crown Vick apart that also had E7s on it not the E6. for your thoughts maybe Ford screwed up again and maybe some one put them on some time in its life but sure seemed to be factory to me. I wont continue arguing with you, You started this by saying there was wrong info being handed out but in turn it was you handing it out come correct before you accuse others.If I can get my F-ing software to run I will up load you the photos of the pistons for you and if you need I also have some 86 heads for a photo if you need.
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302 and 302 H.O - 
