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 |  gas mileage -- mike selling, 02/20/2004
what kind of gas mileage could a guy expect to get with a 1970 351 cleveland, automatic and a 2bbl carburetor? It's in a cougar. |
|  | Poor, 12 to 14 if you are lucky -- Lou, 02/22/2004
Had a Cougar with a 351 2 barrel, love the car, hated the gas milage. |
|  | RE: gas mileage -- Michael, 02/22/2004
Looks like we got a gas hog |
| |  | RE: gas mileage -- Travis Miller, 02/22/2004
Gas mileage is directly proportional to the action of the right foot.
Gas Mileage Tip #1...Mount a vacuum gauge in easy view of the driver. Use direct manifold vacuum. Go for a drive. Within one hour you will to learn how to drive more economically. Each time you push the gas pedal down you will see the needle on the vacuum gauge drop. The less the needle drops, the better gas mileage you get.
Learning how to ease into the gas pedal when it is not important to go fast will improve the gas mileage on any type engine. The vacuum gauge will teach you better driving habits. Then when it is time to go fast, put the pedal to the metal and forget the vacuum gauge! |
| | RE: gas mileage -- giacamo, 02/22/2004
i,v sean 351 2v cleavelands get 17 18 mpg with 300,s rear but i live out in the flatlands.so hill,s and city driving will really hurt your milage.....it really depends wear you live......and how you drive. |
| FE 2v heads vs. 4v heads -- Lane Monden, 02/20/2004
Is there any difference in the 2v and 4v 390 heads. I have a pair of C8AE-H and a pair of C6AE-U. The 68's are at the machine shop and I am having them milled .030". Will these heads perform as well as 4v head? Is there any difference? In the book it lists that all 390 heads have 202 int. and 155 exh. valves with 67- to 72cc combustion chamber. Look the same to me. Any info is greatly appreciated.
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| Torque specs. -- Dano, 02/20/2004
I am going to be using studs for the Edelbrock heads I am putting on my 390. The head side of the stud threads are fine. The block side of the threads are the standard coarse. Does anybody know what the torque should be. Is there a correction factor? I don't want to use the specs out of the book because obviously, with the fine threads being torqued to the coarse standard threads spec. the clamping force on the heads will be much greater than it should be. |
|  | RE: Torque specs. -- gene simmons, 02/22/2004
why would the spec be any diferent/ the only difference would be the nut would have to turn more to give the same "torque reading"
i am also using studs on my block with edelbrock heads and im not worried about the spec/ the studs have be loctited in place using an old head to set up the studs but thts it.
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| | | RE: Torque specs. -- Dano, 02/22/2004
Finer threads will have a much higher clamping force than the same bolt with coarse threads. It is just like a gear ratio, if you have to turn a nut 20 turns to go one inch, it will clamp much tighter than a nut that only needs to go 5 turns to go one inch. So if you torque a fine thread bolt down to the same torque as a coarse bolt, I think you would over torque the head. But who am I to know. Thats why I am asking you guys. |
| | | | RE: Torque specs. -- gene simmons, 02/23/2004
a finer nut or bolt will have more control over a torque value because of its finer pitch but a torque of 100lbs is 100lbs wether the bolt is fine or corse/ its resitance( which is what u are measuring as torque) is measured tru ur wrench- the wrench doesnt care what pitch ur are using, all its doing is measureing that resitance. |
| | | | | RE: Torque specs. -- Dano, 02/23/2004
Thanks for the response Gene. However, I took a look in my handy True Value Hardware pocket reference book, and according to their bolt torque specs on page number 272, it says the torque rating will increase by 9% when using fine thread bolts. The rating chart shows coarse threads. It also shows the effect of lubrication on bolt torques and the same bolt with no lube, 5/16-18 grade 8 has a max of 29 foot lbs with no lube vs 13 foot lbs when using a lube of graphite and oil. |
| Distributer ID help -- scf100, 02/20/2004
What did this distributer come off?
Autolite C8TF 12127? Thanks Stuart |
| rpm limts of stroker cranks -- jeff, 02/19/2004
I would like to know what sort of limits rpm wise would be a safe bet running the scat 4.250 stroker crank in 390's and 428 engines,
(just street use)
thanks |
| Dynoed 390 -- galaxiefreak64, 02/19/2004
has any one ever dynoed a stock 390 or close to stock? |
| Flywheels, did I just buy the wrong one? -- Ian Dobson, 02/19/2004
Ok, so I bought a flywheel for a 66 428
it came zero balanced, is that right?
Its a Hays 12-240 wiich is the correct part number from their catalog.
they also list a detroit balance flywheel for a 68-71 428. part # 12-135
should my flywheel be detroit or zero balanced, and can I use the one I have, since I'm gettin the whole assemby balanced anyway. and will the tech who does it be smart enough to know what the imbalance should be on the flywheel, if there is one?
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| | RE: Flywheels, did I just buy the wrong one? -- giacamo, 02/19/2004
your 428 should have a counter balanced flywheal . i,v rebalanced 390 flywheals for 428,s in a pinch wen i could not find a decend one.but if you got the money just by the right flywheal it makes it easier on the guy doing the ballance work.... |
| | RE: Flywheels, did I just buy the wrong one? -- dave, 02/24/2004
Steel is safer than iron, if you are having it balanced I assume its cause youre gonna spin it...right! Mallory metal is expensive ....but youre doing an FE so you are used to it. I have never had a stock flywheel come apart and Im not gentle on equipment but I have seen pics and its ugly. You already have the wheel and a date with the balance guy.....hit it! |
| 5 speed with cable clutch conversion -- Ian Dobson, 02/19/2004
Hey, has anyone here done this, I need to hear a story before I spend another $3500 on the conversion, thanks.
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| Gear ratio choice? -- Carlos, 02/19/2004
Hey guys, i could use some sound advise. I own a mustang with a 390, bores .30 over, comp cam .563/.565 lift, 110 lobe sep, holley 750 cfm vacume secondary carb, hooker headers, 2400 to 2800 tci torque converter. I have a couple of questions, 1. What gear ratio should i use to make this car very quick and fun to drive? 2. I am using a mallory dual point distributor, but want something better? Finally, what other power secrets can you share to make my car quick and fun? thanks for your help.. |
| | RE: Gear ratio choice? -- Bob H., 02/19/2004
A hard question kinda like asking what woman would make a good wife, gear ratio any were from 3.55 to 4.33 have been factory insalled ,depends on how much you drive on hwyway and how much RPM you can live with,how big the rear tires are?
Alot of hwy 3.55's ,none 4.57's
my$0.02 |
| | RE: Gear ratio choice? -- Bob H., 02/19/2004
2. For the dist question I like a late Ford electronic ,find a 75 F-100 390" in the boneyard and git the dist., electronic box, and the wiring and install in your ride.
3. for the other how deep are your pocketd?
I saw a 671 blower manafold on E-bay the other day that will make it quick and fon! |
| | RE: Gear ratio choice? -- giacamo, 02/19/2004
with that stall 4.10,s |
| | RE: Gear ratio choice? -- giacamo, 02/29/2004
with the high lift cam and headers and 750 cfm carb that engin should rev up to 6500, 7500 rpm,s 4.10,s should work. i,v used dual points. but i pull the dist, and set up the points on a sun dist, machine sothay will be adjusted corect.but i like to use msd all thear stuff workes good....... |
| | | RE: Gear ratio choice? -- giacamo, 02/29/2004
ps i thought he wanted it to be quick.......4.10 is abought as deep as i,d go if his engin will rev up........ |
| 390 flywheel // 427 -- Thomas Reynolds, 02/18/2004
I have a 390 with a four speed 67 mustang gt. What flywheel should go on it, what does it look like and how much should I pay for it?
Also I might have found a runnin 427 block for $1200. I don't know anything about the 427. How can I tell it is a 427 and if it is should I buy it? |
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