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 |  Oil pressure -- gene simmons, 01/13/2006
why is my oil pressure so low at idle on my 410fe engine? used a hv melling pump, checked everything; pressure is decent at variuous rpms. any thoughts. according to my mechanical guage( haven't swap in a new guage yet) i have about 5psi or so at idle. motor now has bout 2k miles on it hasn't blown up or anything just really concerned. |
|  | No spec for idle oil pressure -- Gerry Proctor, 01/13/2006
Oil pressure specs are usually at around 2k rpm. Idle pressure specs would be a bit meaningless. If the lifters don't start clattering at idle, you have nothing to be concerned over as long as your 2k rpm pressure meets specs.
But wait, there's more! Most low oil pressure problems are going to be in the cam bearings. If your idle pressure is verified as true and your upper rpm specs seem low, then it may be pushing oil past the cam bearings. Just something to be aware of. |
 | 1968 Mustang Facts Book -- Fred, 01/13/2006
So I like to have Mustang literature and buy a lot of it. I bought the book "1968 Mustang Facts Book" from California Mustang. In it, on page 28, there is a specs listing for the 390-4V.
I have never seen this anywhere before, but it states that there were two different 390-4V's available. The upgraded GT version is listed at 335HP at 4800rpm and 427lbs-ft of torque at 3200rpm.
It goes on to say that this increased rating is due to a "special carburetor, camshaft, and ignition components".
First, is this true? and if it is, what was special? |
| sluggish during low rpn take off -- jesse, 01/13/2006
hi i have a problem with my 66 mustang i put a carburetor from a 352 that came off a 1960 t-bird on 289 its a four barrel i dont know if its causing the car to run sluggish. whenever i try to take off from a stop it wants to die then i give it some gas and it gains power everything runs good above 2000 rpm except when i try to take off from a stop. please help its making me frustrated |
|  | RE: sluggish during low rpn take off -- Big Dave, 01/13/2006
Your carb doesn't provide enough gas at low RPM. You'll have to get a slightly larger carb. |
|  | RE: sluggish during low rpn take off -- Ryan, 01/13/2006
I'll throw this in here for what it's worth. My car did the same thing, but I knew I had plenty of carb for it. I made three changes and the problem went away:
1) Found the formula to calculate the minimum size air filter I needed, then bought a filter larger than that.
2) Bought a vaccuum gauge, and got Holly's specs on how to tune my carb
3) Installed a highflow fuel-pump
I'm not sure which of the three (or if it was a combination) fixed it, but the problem went away. She'll take off full throttle now. |
| | | RE: sluggish during low rpn take off -- jesse, 01/13/2006
ill try that see what happens thanks
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| | | | RE: sluggish during low rpn take off -- walt, 01/13/2006
check the accelerator pump stroke,was adjustable on that model carb,also check your distributor,it could be failing or worn out,the best trick i used to make 289's302 's including the boss'swas the stock 65 289 hipo dist,brought them right to life,also incorporated that timing curve into the 351 w,made a hugh difference |
| | | | | RE: sluggish during low rpn take off -- walt, 01/13/2006
ps check your vacuum level,maybe a help to you problem |
| | | | | | RE: sluggish during low rpn take off -- jesse, 01/14/2006
thanks walt it was the pump got better and does anybody know where all the torque and hosepower is on a 289 4 barrrel |
| | | | | | | RE: sluggish during low rpn take off -- walt, 01/25/2006
ok when did this problem start? |
| | | | 66 mustang 3 speed vibration -- jesse, 01/21/2006
hi my 66 mustang makes a vibration when im at 4000 RPM if i push the clutch pedal down the vibration goes away the cluch is brand new with maybe 30 miles on it can anyone tell me wahts wrong with the drivetrain. thanks |
| | | | | RE: 66 mustang 3 speed vibration -- walt, 01/29/2006
bad pilot bearing,twisted /bent input shaft.bad input shaft bearing,or bearings 'nose of out put shaft,in back of the input shaft bearing race area worn,put it in nuetral and rev it,clutch dis engaged,if no vibes bring in the clutch,still in nuetral,if it vibrates,bad disc or prob what was mentioned earlier,throw out bearing will not cause your problem,if you do have vibratoin with clucth pushrd in,put it in gear,clucth still depressed(keeps the gears from turning)bad preesure plate,or balance problems |
| C6 stall converter question -- Ryan, 01/12/2006
I have a 67 mustang with 1968 390GT / C6 and 3.89 tractionlok rearend. The C6 and converter are stock components (from a stationwagon of some kind I believe). It has a crane cam, streetmaster intake, and 750 holley. The GT heads have had 3L valve job and crane springs. The cam's recommended rpm range is 3500 to 6500.
What torque/stall converter would you guys recommend? Or, what type of info should I use to decide?
It's a street car...trans needs a rebuild. |
| | RE: C6 stall converter question -- Big Dave, 01/12/2006
What's the cam duration specs? |
| | | RE: C6 stall converter question -- Ryan, 01/12/2006
Big Dave, is this what you need?
LIFT
INTAKE @ CAM 298 @ VALVE 524
EXHAUST @ CAM 298 @ VALVE 524
TIMING @ .0107
INTAKE OPEN 42 BTDC CLOSE 88 ABDC 310 ADV DURATION
EXHAUST OPENS 90 BBDC CLOSE 40 ATDC 310 ADV DURATION
CAM TIMING @ .050
INTAKE OPEN 12 BTDC CLOSE 52 ABDC MAX LIFT 110 244 DURATION
EXHAUST OPENS 60 BBDC CLOSE 4 ATDC MAX LIFT 118 244 DURATION
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| | | | RE: C6 stall converter question -- Big Dave, 01/12/2006
That's exactly what I needed. For an advertised duration of 310, I would recommend a stall converter of 2400 to 2500 RPM. That should provide a good RPM for the street and allow you to open up on the strip or open road. |
| | | | | RE: C6 stall converter question -- Ryan, 01/13/2006
Thanks Dave. If you don't mind me asking...why is the duration more important than say the operating rpm range of the cam. Just trying to learn a little.
Thanks |
| | | | | | Operating Range -- Big Dave, 01/13/2006
I am sorry Ryan, but I gave you the wrong numbers. You need a stall converter fo about 3000 RPM. That will provide you with enough lower RPM power to accelerate from a dead stop on the street, but will also give you tire smoking performance. But keep in mind that a higher stalling converter will provide much more heat, so you will need a heavy duty trans cooler.
As for the duration, thats what determines the cam operating range. Longer duration will hold the valve open longer and means more air into the chambers and thus provide more power.
A good rule of thumb when picking a stall converter is for a cam with an advertised duration of up to 248, go with a 2000 to 2400 stall converter; advertised durations up to 272, go with a 2400 to 2900 stall converter; and cams with advertised durations of 273 or larger, go with a 3000+ stall converter.
Hope this helps |
| | | | | | | RE: Operating Range -- Ryan, 01/13/2006
That helps a ton. Thanks for the advice and the knowledge!
|
| 1968 torino gt protopype -- troy gabrielsen, 01/11/2006
The guy that i bought the car from said it was a 67 prototype any body heard of this |
| 1968 torino gt 2 barrel 428 -- troy gabrielsen, 01/11/2006
my engine has a 2 barrel manafold. it also has factory rollor rocker system on it. head code of c8me-h block c7me-a would that even be an orginal motor. did they have a prototype torino with that set up my vin code is y |
| big block radiator -- grabber, 01/11/2006
I am looking for a new big block radiator for my 1969 mach 1 390. I found a radiator but I am a bit reserved as to whether is is a big block radiator. The number stamped on the radiator is C8ZES1 8KC. Can you please advise me here? |
| | RE: big block radiator -- Tim, 01/11/2006
S1 is a big block radiator. I believe it was originally for 68/9 390 |
| block & head codes -- troy gabrielsen, 01/10/2006
I have a 68 torino gt with block # c7me-a and head code of c8me-a what kind of motor do I have i'm baffled |
| | RE: block & head codes -- giacamo, 01/10/2006
the block my be a 390 or a 428 depends on what thay cast that day.The heads are 1968 390/428 8 or 14 hole exaust manifold heads depending on how many holes thay decided to drill that day. |
| | | RE: block & head codes -- troy gabrielsen, 01/11/2006
Thanks also the motor only has a 2 barell on it but the heads have some sort of factory rollor rockers on it. it has the 14 bolt exaust |
| | RE: block & head codes -- Steve-O, 01/10/2006
Ther have been numerous posts on this subject. Ford's casting numbers are useless in identifying a motor (no completely, just mostly). The only way to ID a block positively is to measure the bore and stroke. Combine that with the casting numbers and you will have the block ID.
As for the heads, the 14 exhaust bolts will tel you that it is a GT head. With other heads, You need to use the intake and exhaust port dimensions with the casting numbers to ID it. |
| fe heads -- john, 01/09/2006
I have a set of 390 heads C6AE-R they have the 14 hole ex. bolt pattern are they GT heads the book that I have lists them as stock.I have read some info that suggests if they have the 14 or 16 bolt pattern that they are GT heads any info out there on this.
thanks |
| | RE: fe heads -- Royce P, 01/09/2006
All 390's of a given year used the same heads. GT heads got 14 holes so yours are for a GT. The casting number lists in any book are hooey, there is no good list out there anywhere.
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| long rods in a 390? -- johnanthony1967, 01/09/2006
just tore down my fe and found an interesting combo of parts in it.
rods- C1AE-B
crank- 2U
block- D4TE
I have been told that the rods are long 352 rods and that they won't work in a 390, but the motor ran fine with them. Any ideas? |
| | RE: long rods in a 390? -- Big Dave, 01/09/2006
It's possible that the pistons that were in the motor wer low compression pistons for a 360. The 360 has the same bore as a 390, but same stroke and rod length as a 352. If they were low comp pistons and large chamber heads, it is likely that it worked just fine. |
| | | RE: long rods in a 390? -- johnanthony1967, 01/10/2006
The pistons in it are KB hyper's. Why would someone build this motor like that. The motor had a ton of juice when it ran, it also would knock without super and octane boost. Had the timing bumped up to about 10 or so. Should I just get some 390 rods for this thing? |
| | | | RE: long rods in a 390? -- Big Dave, 01/10/2006
You might want to calculate your new compression ratio with the new rods. With the shorter length con rods, you might drop the compression ratio so low that the engine cannot run. You might have to get new pistons to maintain or get a new compression ratio. If you are not sure how to do that, let me know. I have to formula written down somewhere. |
| | | | | RE: long rods in a 390? -- brian g, 01/10/2006
Kinda off the subject, but can anyone help? I bought a hydraulic cam/lifter kit and ordered pushrods from the same place. The pushrods that came are the solid type and I was told I needed the oiled type or I will burn up the heads! Is there any truth in this? ALSO, I got a deal on some rebuilt heads (1968) and when we compared them to my 1964 390 block, there is an extra hole in the center of the heads that isn't on the block? It's right below the bolt hole. My question is will these heads be able to work or did I buy the wrong heads?
thanx for the help anyone??
Brian
costa mesa, ca |
| | | | | | RE: long rods in a 390? -- giacamo, 01/10/2006
all fe.s oil from the block to the rocker stands not from the pushrods.the pushrods will be ball to ball tipe for hydraulic lifters and ball to cup tipe for solids..what bolt hole?on the heads post the head numbers. |
| | | | | | | extra hole -- Barry B, 01/11/2006
he's talking about the extra hole below the top center head bolt hole. It's on the head face surface and only goes thru to the water passage. I've seen it on C6AE-U, C7AE-A, C8AE-H and D2TE-AA heads too. Have no idea why they added it, maybe to help remove the casting sand? Anyway, the hole gets sealed up with the head gasket. |
| | | | | | | | RE: extra hole -- brian g, 01/12/2006
thanx for the help! Do any of you ford dudes know if anyone makes headers for a 1959 wagon? The 390 I'm building is for the wagon and I cannot find headers anywhere. |
| | | | any #'s on the pistons? -- Barry B, 01/11/2006
would be interesting to look them up and calculate what your compression ratio was. |
| | | | | RE: any #'s on the pistons? -- johnanthony1967, 01/11/2006
I'll look and see tommorow, I know they are Keith Blacks, .040 over, with floating pin's. Looked for a # before, didn't find one, but I'll look closer this time |
| | | | | | kb silvolites -- johnanthony1967, 01/12/2006
the # stamped on the inside is 1139. |
| | | | | | | RE: kb silvolites -- walt, 01/12/2006
also if the pistons are stock,they will have 360,and or 390 4v on them |
| | RE: long rods in a 390? -- walt, 01/12/2006
seems like a low compression 360 light truck motor |
| | | RE: long rods in a 390? -- johnanthony1967, 01/13/2006
yes, but it has a 390 crank in it |
| | | | RE: long rods in a 390? -- walt, 01/13/2006
then it would walk the piston out of the deck of the block,compression hieght on the piston must be short,to make up for the rod length,are you shure its a 390 crank?ford used left over 352 crank and rods,in 4.05 bores,with left over 390 4v pistons,at the end of manufacture and the 360,390 4v piston were interchangeable,seen that in several engines,my old 360 had 6 360 labeled pistons,2 390 4v pistons,and the after market parts book show 360/390 4v ,same part number |
| | | | RE: long rods in a 390? -- walt, 01/13/2006
after thought,i are you shure of the rod length?i may be corrected i heard if the skinny short rod in early 390s,never seen one of them though check the center to center length,any how if the are 390 length i awould recomend the 390 /428 rod with arp bolts,or pi/cj rod with arp or stock bolts,safer options |
| | | | | RE: long rods in a 390? -- johnanthony1967, 01/14/2006
yeah i'm gonna check the rod length, to make sure. right now i'm just going by the casting #, which says it's a 352 rod. the crank casting # is 2u which is a 390. thanks for your thoughts |
| | | | | | RE: long rods in a 390? -- walt, 01/16/2006
maybe a 390/360 block with 50 over 352 pistons?,i dont have i silvolite catalouge for refferencethe 360 was a 390 block,352 crank,rods,4v 390 pistons,pulled it down to 8.5 area of compression,you might have some 11,plus 390 pistons to maintain compressionthen i got an artile about a 427 ,using a 352 crank,rods?after market?,came out to 396 cubes,they wanted high sustained rpm with the short stroke motor |
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