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Aftermarket Carb for 1978 460

 
  #1  
Old 10-20-2001, 07:45 PM
Scavenger
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Aftermarket Carb for 1978 460

Hi,
I have posted questions on the 73-79 board about replacing a Motorcraft 4350 Carb with an aftermarket brand such as Edelbrock, Carter, or Holley. I have a 1978 F350 1Ton Dually with the 460 motor, C6 automatic tranny, and it is 2 wheel drive. I have received some good info, but nothing that really pertains to doing this to a stock 460. I had sent an e-mail to Edelbrock but did not receive an answer after 2 days so I got impatient and called their Tech Line. The guy I talked to on the phone told me I would have no problem slapping a performer 1411 on the stock intake, but would need to get adapter parts #1483, ans #1495 (throttle adapter). About an hour later Edelbrock answered my e-mail and the message stated that it was unfortunate that he could not recommend an Edelbrock product for my application because in his opinion it would be more trouble than it would be worth, and that the best thing to do would rebuild the present Motorcraft 4350. Down the road I do plan on having the 4350 rebuilt (if it can be) and using it on another 460 that presently dosn't have a carb. I am somewhat confused by Edelbrocks responses. I would really appreciate some info from anyone who has installed an aftermarket carb on a stock 460, including brand, what modifications (adaptors,etc), and installation tips. Thanks........Pat
 
  #2  
Old 10-20-2001, 08:11 PM
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Aftermarket Carb for 1978 460

I don't know how much help this is, but I got a Holley 750 vac sec., manual choke on my 79 460. My truck is a factory 460 and the throttle and cruise linkage all hooks up like factory. Well let me clarify it looks all factory since it was one the truck before I bought it. Though I don't have a kickdown lever, but with a c-6 and big block I don't need it. I can just pull it down myself.

chris
79 F-150 Ranger Lariat, 2wd, RC, LB, 460 (intake, headers, cam), C-6(shift kit).

79 mustang (work in progress...its just slow progress)
98 Chevy 4x4 (work truck)
95 Lexus SC300 (wife's baby)

 
  #3  
Old 10-21-2001, 05:26 PM
TBirdGuy
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Aftermarket Carb for 1978 460

1 thing to say.......Holley.......nothing more needs to be said. By far a better carb in my opinion (along with everyone else that I talk to.) Get a 750 Holley w/ vaccum secondaries and you'll be set. Most of all Holley's carbs come with the little bit of additional hardware you need to hook it up to your truck. Only thing I added to mine was electric choke. That's the way I'd go.

TBirdGuy

"Stuck with a m*par, Settle for a ch*vy, Happy with a Ford!!!!"
 
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Old 10-21-2001, 07:44 PM
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Aftermarket Carb for 1978 460

Classic79, TBirdGuy,
Thanks for the info. I went to the Holley website and found what I believe to be a universal (Avenger) carb for my application. Evidently this model (#0-8050S)is a 750 CFM with electric choke, and comes with the linkage already set up for the Ford kick down cable. Now to search the web for the best price. Thanks again,
Pat
 
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Old 10-21-2001, 09:15 PM
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Aftermarket Carb for 1978 460

You're making a very good choice. The Holley Street Avenger is a very good 'out of the box' carburetor. They are designed so that the everyday car guy can throw it on and it be very close to being in tune. That way you don't have to have all kinds of special tools, you can just open it, put it on, and start the motor.

TBirdGuy

"Stuck with a m*par, Settle for a ch*vy, Happy with a Ford!!!!"
 
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Old 10-24-2001, 06:51 AM
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Aftermarket Carb for 1978 460

Well I havn't searched for the best price on the Holley #0-80508S yet but I did receive an answer from the Holley Techline. The response stated that I would also have to get Holley part #17-6 which is a SQUARE FLANGE to SPREAD BORE ADAPTER. Looking up this part I found that it says this flange will allow any Holley 4150 or 4160 square flange carb to be mounted on manifolds that were originally designed for Rochester Q-Jets, Carter, or Thermo Quad carbs, and also that this adapter can "BE USED IN REVERSE". This flange has a square hole in the middle and got me thinking. After installing the new carb and flange will I still have a spread bore (because of the 4 round holes in the stock intake manifold), and if so what is the purpose of using this flange which appears to be 1" thick. I am kind of confused over this and would appreciate hearing from someone who is familiar with these adapters/flanges.....thanks,
Pat.
 
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Old 11-03-2001, 06:44 PM
DWBon723
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Aftermarket Carb for 1978 460

Hello,I have swaped both Holley and Edelbrock carbs in place of the stock Motorcraft carb.The Motorcraft carb. has the bolt pattern of a Holley carb.but the spread bore configuration of a Q jet or Thermoquad.If you use a 600 cfm.carb.be it Holley or Edelbrock it will bolt to the manifold directly.If you get one for a Ford it will have the transmission throttle lever on it. I used the 750 cfm.versions of both carbs.Since the throttle blades on these are a little bigger,I had to mill some clearance in the stock spacer plate.The amount to be removed is not all that great and if you don't have access to a mill some hand work with a die grinder would do the trick. I will say that out of the two,the Edelbrock carb. does not make the power of the Holley,but driveability and mileage of the Edelbrock is far superior.I hope this info.helps.If you have more questions just ask.
 
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Old 11-06-2001, 03:36 AM
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Aftermarket Carb for 1978 460

What are the downfalls of a 4350 Ford carb???I plan on changing heads on my 460 before it goes in my 4X4.I have a spread bore intake with the 4350 carb,and a squre bore intake with a good Holly.I want the best setup for fuel mielage.I can rebuild the
4350 if its worth it.??????????
 
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Old 12-05-2001, 11:01 PM
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Post Aftermarket Carb for 1978 460

I've ran the Edelbrock 600cfm on the last 3 460s that I've had. Great carb, simple,& reliable. I also get better milage than I got with a stock carb. Only about an average of 10 between the 3 trucks, but better none the less.

 
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Old 12-06-2001, 02:08 AM
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Aftermarket Carb for 1978 460

 
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Old 11-04-2018, 08:46 AM
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Can't find a Spacer

I have a similar issue with my 1978 460 F250. I currently have both Holley & Elderbrock 600cmf carburetors to replace my old Motorcraft on the stock manifold. However, the butterfly throttle blades do not match up to the plenum openings on the manifold. To make things worse, the original spacer is broken and I can't identify an adequate spacer that will work with the large throttle blade openings on my manifold & either of the two carbs waiting to be installed. Any suggestions on carb spacers? I would prefer one that directs fuel directly into the throttle blades over the plain square spacer, but will settle for whatever is necessary to make it all work together.
 
 
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