sick 460 when towing
#1
sick 460 when towing
Hey Guys, need some help. 79 F250 SC 2wd. Rebuilt and it won't tow worth a d___. Here are the specs on the rebuild.
Edelbrock 2166 Performer intake (non egr)
Edelbrock 2167 Performer-Plus cam/lifters
Duration @ .006 Lift IN 272 EX 282
Duration @ .050 Lift IN 194’ EX 204’
Intake: 8 ATDC 22 ABDC
Exhaust 37’ BBDC 13 BTDC
Centerlines Lobe 110 Intake 105
Edelbrock 1411 Performer 750 CFM carb
Edelbrock fuel pump
Edelbrock 78130 roller chain/gears (72-83 460)
Bored 40 over
Cleveite pistons/rods small dish in piston
Recurved distributor by reincarnation-automotive
8 inital 35 total w/ vacuume
Balanced
Stock exhaust manifold
2” duals
3:54 gears
No head work as of now
92 octane fuel
10.4 MPG solo
7.8 MPG towing 3000 lb boat
Not sure where to start looking for the problem. Any help would be appreciated. Prior to rebuild all was stock except pre 72 429 timing gears/chain. Ran real strong, pulled boat and camper with ease. Rebuilt and I can't break the tires loose. Where do I start, carb, timing gears ??
79 F250 Super Cab Cmpr Spl Lariet
04 F350 Super Cab 6.0 Dually
Edelbrock 2166 Performer intake (non egr)
Edelbrock 2167 Performer-Plus cam/lifters
Duration @ .006 Lift IN 272 EX 282
Duration @ .050 Lift IN 194’ EX 204’
Intake: 8 ATDC 22 ABDC
Exhaust 37’ BBDC 13 BTDC
Centerlines Lobe 110 Intake 105
Edelbrock 1411 Performer 750 CFM carb
Edelbrock fuel pump
Edelbrock 78130 roller chain/gears (72-83 460)
Bored 40 over
Cleveite pistons/rods small dish in piston
Recurved distributor by reincarnation-automotive
8 inital 35 total w/ vacuume
Balanced
Stock exhaust manifold
2” duals
3:54 gears
No head work as of now
92 octane fuel
10.4 MPG solo
7.8 MPG towing 3000 lb boat
Not sure where to start looking for the problem. Any help would be appreciated. Prior to rebuild all was stock except pre 72 429 timing gears/chain. Ran real strong, pulled boat and camper with ease. Rebuilt and I can't break the tires loose. Where do I start, carb, timing gears ??
79 F250 Super Cab Cmpr Spl Lariet
04 F350 Super Cab 6.0 Dually
Last edited by USN-Ret.; 08-01-2010 at 10:34 AM. Reason: No Replies
#2
Cam might be a little big for towing??
Hey Guys, need some help. 79 F250 SC 2wd. Rebuilt and it won't tow worth a d___. Here are the specs on the rebuild.
Edelbrock 2166 Performer intake (non egr)
Edelbrock 2167 Performer-Plus cam/lifters
Duration @ .006 Lift IN 272 EX 282
Duration @ .050 Lift IN 194’ EX 204’
Intake: 8 ATDC 22 ABDC
Exhaust 37’ BBDC 13 BTDC
Centerlines Lobe 110 Intake 105
Edelbrock 1411 Performer 750 CFM carb
Edelbrock fuel pump
Edelbrock 78130 roller chain/gears (72-83 460)
Bored 40 over
Cleveite pistons/rods small dish in piston
Recurved distributor by reincarnation-automotive
8 inital 35 total w/ vacuume
Balanced
Stock exhaust manifold
2” duals
3:54 gears
No head work as of now
92 octane fuel
10.4 MPG solo
7.8 MPG towing 3000 lb boat
Not sure where to start looking for the problem. Any help would be appreciated. Prior to rebuild all was stock except pre 72 429 timing gears/chain. Ran real strong, pulled boat and camper with ease. Rebuilt and I can't break the tires loose. Where do I start, carb, timing gears ??
79 F250 Super Cab Cmpr Spl Lariet
04 F350 Super Cab 6.0 Dually
Edelbrock 2166 Performer intake (non egr)
Edelbrock 2167 Performer-Plus cam/lifters
Duration @ .006 Lift IN 272 EX 282
Duration @ .050 Lift IN 194’ EX 204’
Intake: 8 ATDC 22 ABDC
Exhaust 37’ BBDC 13 BTDC
Centerlines Lobe 110 Intake 105
Edelbrock 1411 Performer 750 CFM carb
Edelbrock fuel pump
Edelbrock 78130 roller chain/gears (72-83 460)
Bored 40 over
Cleveite pistons/rods small dish in piston
Recurved distributor by reincarnation-automotive
8 inital 35 total w/ vacuume
Balanced
Stock exhaust manifold
2” duals
3:54 gears
No head work as of now
92 octane fuel
10.4 MPG solo
7.8 MPG towing 3000 lb boat
Not sure where to start looking for the problem. Any help would be appreciated. Prior to rebuild all was stock except pre 72 429 timing gears/chain. Ran real strong, pulled boat and camper with ease. Rebuilt and I can't break the tires loose. Where do I start, carb, timing gears ??
79 F250 Super Cab Cmpr Spl Lariet
04 F350 Super Cab 6.0 Dually
#3
#4
Checked into edelbrok!
specs look good with towing with your cam. maybe check your fuel pressure and make sure 5 to 7 psi. I'm guessing you timing is good but make sure you have 12 volts+ at coil. Might be firing but weak spark. Check your distributror and contacts closely. Also need to check you valvetrain and makesure you don't have any flat lobes on cam. usually you will hear valvetrain rattle if this happening. Also on carb while idling make sure your carb is getting enough fuel and squirters are squirting. it will be two stream of gas in center of carb in primarys just beneath choke plate. If you have a vacume gage check and see if any erratic readings on gage. Compression sound perfect for 9 to 1 compression motor. It should spin a tire easily and tow with the specs they have on that 2167 cam and intake package. Good luck and hope this helps. Also does motor rap up while in idle in park then when you throw a load to it then it just goes flat. My gut is telling me a possible fuel psi problem or restriction/filter. On the carb have you done any tuning to carb or set air fuel?? Catch you later and good luck. does the cam have a smooth sound or slight lope or heavy lope? once had a cam installed and wrong cam in box. OOps on our part for not checkin the numbers on end of cam.
#5
I'll do a fuel pressure test and see where I'm at. It idles OK. Slight lope to the cam. Wraps up good in park. On the road it is flat. New air filter, going to a cold air induction system. All the local mechs say to loose the Edelbrock and get either a 670 Holley Street Dominator/vacuume secondaries or go to the 750 Holley.
I'm an electronic fix it guy. wish I had listened to my Dad when he tried to teach me about engines. I'll get back to you when I check out the fuel system.
79F250SCCS
I'm an electronic fix it guy. wish I had listened to my Dad when he tried to teach me about engines. I'll get back to you when I check out the fuel system.
79F250SCCS
#6
I'm a fan of the holley design carbs over the edelbrock.
I'll do a fuel pressure test and see where I'm at. It idles OK. Slight lope to the cam. Wraps up good in park. On the road it is flat. New air filter, going to a cold air induction system. All the local mechs say to loose the Edelbrock and get either a 670 Holley Street Dominator/vacuume secondaries or go to the 750 Holley.
I'm an electronic fix it guy. wish I had listened to my Dad when he tried to teach me about engines. I'll get back to you when I check out the fuel system.
79F250SCCS
I'm an electronic fix it guy. wish I had listened to my Dad when he tried to teach me about engines. I'll get back to you when I check out the fuel system.
79F250SCCS
#7
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#8
edlebrock 750
an edlebrock 750 should be big enough!! but if you bought the one with the electric chokeit is too lean..get a 1407 jet and pin kit and look in the book and set it very rich.. 460's like rich.. take the distributer loose and advance it untill you either get starter lag or ping..back it off untill the ping disappears or untill the starter lag disapears,then lock it down..now your mpg is going to suffer but you will really like the power..good luck!!
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