460 street build
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FTE Chapter Leader
Joined: Nov 2006
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From: Fresno, CA.
460 street build
Hello all,
I have a recently purchased 76 F-250 2wd longbed that orignally came with a 360 2bbl, and now sports a 460 4bbl (Motorcraft I believe). It has the C6 trans and Dana 70 rear end with 4.56 gears.
My budget is limited so I will be buying upgrades as I can afford them. What I had in mind was going with the Edelbrock Performer series. Cam, intake, carb, and a set of headers (they don't have a header for my year but I am sure other companies do) I would also be replacing the timing chain, and adding electric fans, K&N air filter, and possibly an electric fuel pump.
Anyone installed this setup? If so what kind of performance gain are we talking about? Was there an appreciable increase in gas mileage? I know with the engine /rear end combo I have, gas mileage is almost nil, but any improvement is appreciated.
I have a recently purchased 76 F-250 2wd longbed that orignally came with a 360 2bbl, and now sports a 460 4bbl (Motorcraft I believe). It has the C6 trans and Dana 70 rear end with 4.56 gears.
My budget is limited so I will be buying upgrades as I can afford them. What I had in mind was going with the Edelbrock Performer series. Cam, intake, carb, and a set of headers (they don't have a header for my year but I am sure other companies do) I would also be replacing the timing chain, and adding electric fans, K&N air filter, and possibly an electric fuel pump.
Anyone installed this setup? If so what kind of performance gain are we talking about? Was there an appreciable increase in gas mileage? I know with the engine /rear end combo I have, gas mileage is almost nil, but any improvement is appreciated.
Postmaster
Joined: Apr 2002
Posts: 3,613
Likes: 6
From: Coal country
The best bang for your buck will be a timing set for a '70 429/460, to restore the proper camshaft timing.
After that, I recommend one of the camshaft/intake/carb packages. You can get the vendor to coordinate the best combination for your intended use.
I put a 460/C6 setup into my '66 F-100, and intend to use it for towing. I put in the earlier timing gears, an RV camshaft along with an Edelbrock 1411 705 CFM on a Performer intake.
I have the old cast iron manifolds, and it has power to spare. I have a 2.75 rear end, so I get 15 MPG at 70 MPH.
My '66 setup, for all intents and purposes, is the same as your '76.
My next step is to put on a new exhaust sytem, to go from 2" to 3" pipes, and a crossover.
I would think the fans, electric pump and headers will not be as useful or as needed as you think.
Good luck!
After that, I recommend one of the camshaft/intake/carb packages. You can get the vendor to coordinate the best combination for your intended use.
I put a 460/C6 setup into my '66 F-100, and intend to use it for towing. I put in the earlier timing gears, an RV camshaft along with an Edelbrock 1411 705 CFM on a Performer intake.
I have the old cast iron manifolds, and it has power to spare. I have a 2.75 rear end, so I get 15 MPG at 70 MPH.
My '66 setup, for all intents and purposes, is the same as your '76.
My next step is to put on a new exhaust sytem, to go from 2" to 3" pipes, and a crossover.
I would think the fans, electric pump and headers will not be as useful or as needed as you think.
Good luck!
Fleet Mechanic
Joined: Mar 2004
Posts: 1,398
Likes: 17
From: Hesperia, CA
If you are going to have this thing down put a double roller chain in it. These things will go for many miles without streching. A streched chain will change critical cam timing and stock chains start streching almost immediately after fire up.
Senior User
Joined: Oct 2005
Posts: 484
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I have a recently rebuilt 460 that has 10 to 1 compression, trick flow heads, a matching cam, intake, and headers. It really screams. According to the trick flow site, this set up will give you a 460 with 500-650 horsepower. I don't know if their numbers are right, but it is real tire burner and pulls really hard. I am very happy with it. Just to answer your questions: I would not expect any performance gain from an electric fuel pump at all. As for the electric fans, they will give a race motor about 30 horsepower at 6500 rpms - at lower driving rpms (2000-4000) the gain is marginal at best. Headers will make a noticable difference - especially above 3000 rpms. I used L&L and they are very nice. A new timing chain without the factory cam timing retard will help some. I would say that your biggest performance gains will be from a good intake manifold, carb (holley , eldebrock, demon all work well) cam, and headers will really give you a noticable improvement in horsepower. In fact, this setup may double your horsepower numbers from the factory.
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FTE Chapter Leader
Joined: Nov 2006
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From: Fresno, CA.
Thanks for the input. 
) That is cool about the early timing chain setup. I did not know that. I will definitely be putting in a roller timing gear set. I plan on keeping the truck for a long time. It is also good to know about the electric fuel pump. I guess I will save my money and use it elsewhere. The truck will see very little use above 5000 rpm so the RV cam is a good idea. I have heard that the 460 is restrictive in the ehxaust dept, so headers should be a good way to alleviate that.
) That is cool about the early timing chain setup. I did not know that. I will definitely be putting in a roller timing gear set. I plan on keeping the truck for a long time. It is also good to know about the electric fuel pump. I guess I will save my money and use it elsewhere. The truck will see very little use above 5000 rpm so the RV cam is a good idea. I have heard that the 460 is restrictive in the ehxaust dept, so headers should be a good way to alleviate that.
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Senior User
Joined: Jan 2006
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From: Fort Worth,Texas
Welcom to FTI.
If you are going to do all the work of changing intake cam ect you should consider doing some work on the heads so they will flow better. There is no point in spending money on all the parts if you have a bilt in restrictor in the exaust ports.
Bill
If you are going to do all the work of changing intake cam ect you should consider doing some work on the heads so they will flow better. There is no point in spending money on all the parts if you have a bilt in restrictor in the exaust ports.
Bill
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Fleet Mechanic
Joined: Mar 2004
Posts: 1,398
Likes: 17
From: Hesperia, CA
Bill is right I forgot about the smog bumps. Most machine shops have a reamer that will take the smog bumps out. I paid $30.00 per head to have mine removed. Thats a heck of a lot cheaper than buying the equipment and trying to do it yourself. Most people claim a 30% increase in power by taking the smog bumps out. I didn't really notice that much difference in mine, but every little bit helps.
Gary
Gary
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FTE Chapter Leader
Joined: Nov 2006
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From: Fresno, CA.
Smog bumps? Wasn't aware of anything like that. I was thinking I should have a 3 angle valve job done on the heads too. I guess I can have the smog bumps removed then. What about having the exhaust ports ported to match the gaskets? I have heard that is good for flow also.
Posting Guru
Joined: Mar 2006
Posts: 1,526
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From: fargo, nd
gasket matching will help a little... but if youre paying someone to do it itll cost more than the $60 that i spent on a die grinder and a bunch of grinding bits at sears to do it myself... so if youve got the time and ambition go spend a few bucks on tools and do it yourself- and still have something to show for it when its done besides paying someone to do port work... www.reincarnation-automotive.com has instructions on porting your heads
Senior User
Joined: Oct 2005
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I bought trick flow heads. They ROCK! You will notice a huge difference with these heads. Their downfall: they cost about 1600 - 1800 bucks new. They good thing about them is that they take a little more compression than the factory iron ones, they flow like crazy allowing for a big cam, more compression, larger carbs, highrise manifolds. Personally, I think they provide the biggest bang for the buck. However, with time and ambition, you can hog out factory iron heads to get some pretty good flow numbers.
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FTE Chapter Leader
Joined: Nov 2006
Posts: 21,101
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From: Fresno, CA.
Again, thanks for the input. ) I don't have the budget for Trick Flow heads. And I had planned on doing the gasket matching myself. I have not rebuilt an engine in over 20 years, but the basics have not changed much. One reason I bought the truck was because of the ease of maintenance. I like being able to see the engine when I open the hood instead of seeing wires, and hoses, and gadgets. I would do the valve job myself if I had access to that equipment. However, I don't mind paying for that. I will do as much of the labor as possible, mainly to save money but also because I used to enjoy working on vehicles. This will be a project truck that I can't wait to get started on. )
) I don't have the budget for Trick Flow heads. And I had planned on doing the gasket matching myself. I have not rebuilt an engine in over 20 years, but the basics have not changed much. One reason I bought the truck was because of the ease of maintenance. I like being able to see the engine when I open the hood instead of seeing wires, and hoses, and gadgets. I would do the valve job myself if I had access to that equipment. However, I don't mind paying for that. I will do as much of the labor as possible, mainly to save money but also because I used to enjoy working on vehicles. This will be a project truck that I can't wait to get started on. )
Senior User
Joined: Jan 2006
Posts: 292
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From: Fort Worth,Texas
Nighteyez,
The MOST INPORTANT thing about about Scotts web site www.reincarnation-automotive.com is he shows you where the water is as in don't get to deep or you will have nothing but boat anchors when you get done. <V
</V
I have done a set and they came out pretty good. This is a lot cheaper than $1800. for a set of aftermarket heads. <O</O
I have also up graded to 2.19 intake and 1.76 exhaust valves with new hardened seats on the exhaust. True they won't flow as good as the aftermarket heads but I am building low rpm high torque motor.
You weren't specific in what you want this truck to do. You need a plan so you can decide which cam intake ect. you need.
wb6vvv I really want to know where that shop is and I want to see a picture of his finished work. If he can generate decant flow numbers I can keep him busy. $30.00 per head is a great price.
Bill
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The MOST INPORTANT thing about about Scotts web site www.reincarnation-automotive.com is he shows you where the water is as in don't get to deep or you will have nothing but boat anchors when you get done. <V
</VI have done a set and they came out pretty good. This is a lot cheaper than $1800. for a set of aftermarket heads. <O
</OI have also up graded to 2.19 intake and 1.76 exhaust valves with new hardened seats on the exhaust. True they won't flow as good as the aftermarket heads but I am building low rpm high torque motor.
You weren't specific in what you want this truck to do. You need a plan so you can decide which cam intake ect. you need.
wb6vvv I really want to know where that shop is and I want to see a picture of his finished work. If he can generate decant flow numbers I can keep him busy. $30.00 per head is a great price.
Bill
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Last edited by WILDEBILL308; Nov 27, 2006 at 10:28 PM.
Fleet Mechanic
Joined: Mar 2004
Posts: 1,398
Likes: 17
From: Hesperia, CA
Bill, I have the heads in now getting the seats cleaned up for new stainless steel race valves. They claim that they are undercut for increased flow. Do you have any experience with these types of valves?
I had the smog bumps removed about four years ago while I was having a valve job done on the heads and it was indeed an additional $30.00 per head. I will take a picture of the heads as soon as I get them back and try to get it to you.
I have my work done by a local machine shop here in Lancaster Ca and if you are interested I will inquire when I pick up the heads.
Gary
I had the smog bumps removed about four years ago while I was having a valve job done on the heads and it was indeed an additional $30.00 per head. I will take a picture of the heads as soon as I get them back and try to get it to you.
I have my work done by a local machine shop here in Lancaster Ca and if you are interested I will inquire when I pick up the heads.
Gary