6.7 gals/100 miles. The 460 engines built prior to 1972 had 365 horsepower at 4,600 rpm and 485 lb.-ft. of torque at 2,800 rpm. Try to set your cruise control at your vehicles most fuel-efficient speed, as long as its at or below the legal limit. These are becoming increasingly hard to find, and we won't even talk about the iron 429 Cobra Jet and Boss 429 aluminum castingsthey might as well have been buried with King Tut. According to Pony Carburetors, a 4V 390 needs around 609 cfm for peak efficiency and driveability, while a 428 needs 668 cfm. Location: Lake Winnipesaukee, New Hampshire. Also, make sure you tire pressures are good and do regual tune up's. But it a Jeep more inportanly a YJ, so dont bank on all that! Fixing a vehicle that is noticeably out of tune or has failed an emissions test can improve fuel mileage by an average of 4%. Your vehicle operates most efficiently on the recommended fuel octane listed in your Owners Guide. The C6 from the MH will bolt up to the car, but i may have to have the driveline shortened. LEL for Propane: 2.1%. I agree with the above post in that there is NO advantage to building a small bore long stroke engine combo when it comes to torque. Its been awhile since i've owned a EFI 460 but it seems like they were about $600 to $700. Seems like 10-11 MPG is about as good as those things can do from what I've read/heard elsewhere. When fuel injection came into play in the 1980s, the horsepower dropped to 245 and the torque increased to 400 lb.-ft. of torque. And it maintains a constant speed, and wont use additional fuel while accelerating. Completely rebuilding it with every seal and wear-part replaced (with new, if possible) would be the ideal. Grubbs then supplied a set of rebuilt truck rods using ARP bolts to add a measure of durability. . Make sure all filters (air, fuel, oil, and whatever else you have) are . MaritzCX moderates public reviews to ensure they contain content that meet Review guidelines, such as: No Profanity or inappropriate defamatory remarks, No Personal Identifying information (e.g., customer phone number or email), No Competitor references (e.g., another brand or dealership), Dangerous behavior (e.g. The Ford 460 engine specs is a heavy-duty engine that any truck or RV driver would want in their vehicle. I was surprised at how common the C6 OD is, after seeing how many members here have them as a factory option on their cars. Are reviews modified or monitored before being published? For one, it helps to increase performance by letting air flow more efficiently through the engine. I was with you right up until you mentioned that due to the price of fuel vs gas you'd stick to gas. Are you saying it won't turn over using a ratchet on the crank bolt? The 1979 ford 460 oil capacity is around 6 quarts. Give it as little pedal as possible to keep speed. LEL for gasoline vapor: 1.2%. Even in a 4,000-pound car, this is good enough for low 12s to high 11s depending on the weather and altitude. We also included a Holley 750-cfm mechanical-secondary carburetor with the HP body conversion (see that story elsewhere in this issue) to act as mix-master while also including a set of Hooker 131/44-inch chassis headers. 22. Long stroke with small bore is the same as large bore with short stroke. with a 460 cubic inch engine and 2.50 rear gear. 10. History of this Vaporizer & Ford Vaporizer Systems. I'm going to get another look at the engine in a few days and try to get the rest of my questions on it answered. The 390 should get mid to high teens for mileage if properly tuned and reasonably driven. Think of this as looking at the horsepower world through Ford blue-tinted glasses. Don't have much money to put into it and i'll be needing new tires before long. 1990 Ford F250 Pickup 2WD 6 cyl, 4.9 L, Manual 4-spd. Search by make for fuel efficient new and used cars and trucks. Make sure to also keep your tires properly inflated. For a better experience, please enable JavaScript in your browser before proceeding. It'll be much cheaper and do the same thing. The crew at JGM are true Ford 460 fans, and so we found an enthusiastic partner to point us down the proper path to Blue Oval power. Reply Like. . Running around empty the 350 was marginally better however. Well, actually Jim Grubbs Motorsports built it for us because we're inept at time management. Very strong, too. One contributor to this article, faced . Often times you see an engine that's too small in a truck actually getting worse mileage than a larger engine in the same basic truck. In the 80's, 90's and much of the 2000's, this aircraft was Quicksilver's workhorse. From 91 to diesel, the difference is 6.5%. Other than that I love this thing. For another, this extra airflow can improve your truck's fuel economy by anywhere from 3-5 miles per gallon a . 2. On the plus side, you are also going to trim at least 60 pounds off the nose of your car with the aluminum heads. If you are going to put headers on a 20 year old 460, be prepared to remove broken exhaust manifold bolts.They can be a real problem. Everyday costs, plus how reliable and safe it is. Keeping your engine in top shape will help it run better, last longer, and may use less fuel. Your fuel economy drops when you use the air conditioner at low speedsby up to 15%. While researching this story, we found a forum on network54.com. If your non-hybrid vehicle is safely parked, and will be stopped for more than a couple of minutes, turn off the engine. 11/19/13 10:43 a.m. Planning improvements to my tow rig, '88 Ford 460 crew cab dually hauling 18,500 lb max combined weight to races. The iron castings each weigh roughly 73 pounds complete, while the alloy Edelbrocks come in around 42 pounds each. Test 2 employed the longer-duration Performer RPM grind. It's a 4bbl also, not an EFI, however, i want to say that it does have HEI on it. Shifting to Neutral may cancel that mode, so keep it in gear. 18mpg in a big block truck is optimistic, but let's go with that. Also, it's a great way to make your car look cooler. 1968 F250 4X2 360/C6/No Rust! The 302 Boss in my F-100 sat up for 10 years and was locked up tight, but we tore it down and cleaned out the cylinder walls and it's a real monster now, so i know what im getting into. Chrysler's original Street Hemi had valve covers that you could rent out as a dance floor. Adding a cold air intake to your truck might seem like a pricy upgrade, but it has a lot of benefits. 4. If your non-hybrid vehicle is safely parked, and will be stopped for more than a couple of minutes, turn off the engine. Pair that with a high-airflow reusable filter, and you get quite the combo. The 2018 Mustang GT with its 460-hp 5.0L engine and new 10-speed. Fuel Economy of 1989 Ford Vehicles. Choosing a decent iron production head is a quest to minimize the corks. 390's are a little better but not much. 1972 maverick 460 swap in progress 2002 z28 a few bolt ons. The only thing you gain with a small bore is a bit less timing advance needed. Underinflated tires can cause more resistance, which makes your engine work harder. 1970 F250 4x4 390/4spd. I'll post back soon. Multiply that figure, 1,111, by $3.00 per gallon for an estimate of $3,333 per year for fuel. Sponsored by RAID: Shadow Legends It's allowed to do everything you want in this game! Remember that step vans left the factory uncompleated just like motorhomes. Not all these were done when new & by the manufacturer, most were repowered by authorized Cummins dealers after they had many miles on them. You want decent mileage, but may spend all the difference getting the 460 to fit and work right. The modes can be tweaked explicitly to your particular driving style. Also, drive smoother, leaving a long distance between you and the guy in front of you in traffic and don't go from gas to brake to gas to brake. 3. With that said, mileage comes from having the correct size engine for the job. In the JTR V8 conversion manual, a 240Z with a T5 5 speed trans with a stock 1978 350 (190hp) only ran 14.5 @ 96mph in the 1/4 mile. All the Fords were done using the small bell 300-302-351 and the adapter is Cummins not aftermarket. Just open the hood and ensure the engine is off before looking for the air filter and removing the assembly. 2022 Escape. In 1972, Ford went to an open 95 to 100cc chamber, which should be avoided as the worst of all the iron 460 designs because it has no quench area and is therefore prone to detonation. :laugh: More compressed air flowing to your engine means better combustion - not to mention a deeper exhaust tone. As with any truck, fuel efficiency is not one of the selling points of the F100 compared to smaller vehicles. Most were repowers on Chevys with auto trans. Idling can burn up to a gallon of fuel per hour. Thank god those days are over. Customers are invited to participate in a survey administered by MaritzCX, an independent, third-party supplier. You can open up the exhaust ports on a stock set of heads to improve horsepower potential. FYI, 14.7 psi of boost doubles the output of an engine. 360's are fuel eaters. Received 0 Votes on 0 Posts. If using one of the tall-deck-height blocks, this could involve milling as much as 0.030 inch or more off the block deck. JavaScript is disabled. UEL for Propane: 9.5%. The wider valve spacing allows the installation of much bigger valves, which is a huge advantage in performance building and large engine displacements. That's 33% better economy and 11% more expensive fuel. It's strong enough to support a lot of weight. Many C6 trannys had GV overdrive. Because it is a pressurized system, the water pump and its internals deteriorate over time. "A good one from Lucas or Chevron Techron seems to do the job," he says. The Cummins the way to go. . If they can get you asking the wrong questions, they don't have to worry about answers. The long duration will hurt low-end torque, while the restricted exhaust ports will choke any chance of making power at the higher engine speeds. Jarantilla uses high-quality gasoline and for years has used a fuel injection cleaner, designed to help keep intake valves clean and lubricate the upper cylinders to aid in maintaining efficiency. JavaScript is disabled. Because of this extra energy efficiency, diesel vehicles actually get 20%-35% better gas mileage than gasoline fueled vehicles. So when you have to drive for errands, get as many accomplished as you can in one trip to maximize your fuel economy. problem you'll find with most 460s out there is 72-up were pathetically low compression- low as 7.6:1 if I remember right, only put out like 200 hp, and they were notorious for crappy mileage. This minor change accomplishes two things. This goes against the idea of getting there quicker, but every mile per hour over 55 lowers your fuel economy by 0.1 miles per gallon. Take the routes that are usually downhill. The Ford 460 engine is a robust 7.5-liter V8 engine. Locate and remove the engine air filter and housing in order to access the carburetor. Why would it need to rev higher? new exhaust on your stock engine won't increase your mileage. The stock iron 460 heads are a tease. Will a 460 bolt up to an FE trans? The performance of the RV is limited by its engine. Horsepower jumped to 514, and torque improved everywhere from 3,800 rpm on up, peaking at 565 lb-ft at 4,400. The 4BT in my step van was installed when new by the coach builder, not by Ford. 4BT's are great motors. If you are wondering how to make your car fuel efficient, you may want to check the pressure on your tires. The operating vehicle tire inflation pressure can be found on a Certification Decal or Tire Decal, usually located on the drivers door, a door pillar, or the glove box. Nonetheless I would still like to get better if possible without spending a fortune. Along with the above-mentioned maintenance, they can change worn fuel filters and spark plugs, perform wheel alignments, and inspect your exhaust and emissions systems. 20,000 miles per year divided by 18 mpg = 1,111 gallons of fuel per year. The Performer cam made some awesome torque with 523 lb-ft, but that same short cam timing only managed 406 hp. The coach builder is considered the Manufacturer and can do what ever they want as long as they meet Gov specs. Not only will it help keep you safe and prevent possible blowouts, but if every tire is underinflated by at least 10 psi, you will see a 1% reduction in your fuel economy. As a reminder, a more aerodynamic car wastes less fuel which means your ride is more fuel-efficient. Plus, without proper tire inflation, you risk wearing down your treads more quickly. Regular Gasoline. In a word, "tires". Mine came with the T19. 3. Test 1 is using the Performer-Plus Edelbrock cam. Check your owner's manual or the tire wall for the correct PSI for your tires. Normally, they are swapped for lower 4v-style throttle bodies during conversion, or the upper plenum swapped for a plenum 'box' with front intake - sorta-like the GM setups. To create a solid foundation, we decided to also invest in a good short-block with a set of Federal-Mogul forged Speed-Pro flat-top pistons in case we decided to squeeze a little nitrous in the future. I've decided to go with the 460. This makes increasing displacement on the 429 easy enough. 500-hp Ford. Perhaps the best is the Ford Racing Cobra Jet head, designed by Ford big-block guru Jon Kaase. These heads offer the most promising flow potential of all the aftermarket 429/460 heads. The '73-and-later iron 429/460 heads all use a nonadjustable fulcrum-style rocker setup. All iron production heads from 1968 to 1971 were closed chamber and 76cc. = If it was easy, everyone would do it =. As you can see, Test 2 is where we make the power with the Performer RPM camshaft.
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