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Search found 293 matches

by 1986F150six
Tue Oct 15, 2019 1:40 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Oil pan gasket
Replies: 2
Views: 130

Re: Oil pan gasket

On the old style [pre-1987] pans, there are raised areas around each bolt hole, to locate the gasket pieces. The newer oil pans are smooth. Just take a side grinder and lightly hit the raised areas to make the old pan smooth. This worked well on my 1986.
by 1986F150six
Tue Oct 08, 2019 1:45 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Hey from Oly Washington
Replies: 3
Views: 220

Re: Hey from Oly Washington

Greetings! I am providing a link where you can see some of what has been done to another 1986 4.9L F150. It does not provide all the details for the Duraspark conversion [ much about that using the "search" feature or on the Internet ], but it might give you some ideas and hope that it wil...
by 1986F150six
Mon Sep 30, 2019 10:46 am
Forum: 240-300 "Big Block" Six Performance
Topic: Carter YF or YFA questions...
Replies: 7
Views: 382

Re: Carter YF or YFA questions...

Not sure what the 86 air cleaner actually looks like, but I6 Vans had rather compact little air cleaners. I sold this one from a 74, and have another I found in a 78-91 econoline, in the cargo area. Filter is about 8-9" in diameter I think. https://www.supermotors.net/getfile/1138991/fullsize/...
by 1986F150six
Thu Sep 26, 2019 4:03 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Engine is back
Replies: 81
Views: 3197

Re: Engine is back

This is assuming the valve length is the problem. Indeed. I couldn't think what else it could be though. We will find out this evening. In other news I got a new tag on the renewal today. Couldn't believe it wasn't already taken https://i.postimg.cc/ydYrPZCG/237-CBD32-E1-AB-41-C5-8-DA6-9-B1-D791900...
by 1986F150six
Thu Sep 26, 2019 1:39 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Fast Idle
Replies: 9
Views: 305

Re: Fast Idle

This is a link to a post I made several years ago regarding my son's 1984 with 4.9L and Feedback ignition system. See if this gives you any ideas. Read where the vacuum leak was located as it can be illusive. https://www.ford-trucks.com/forums/1478167-vacuum-leak-detection-effective-and-inexpensive....
by 1986F150six
Thu Sep 26, 2019 1:32 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Carter YF or YFA questions...
Replies: 7
Views: 382

Carter YF or YFA questions...

If one mounted two one barrel carburetors using a Clifford 2 X 4 intake for a 4.9L stock engine, and mounted them so that the throttle shafts were parallel to the radiator, does one measure the distance between the throttle cable mounting points and then get a linkage kit which approximates that dis...
by 1986F150six
Thu Sep 26, 2019 8:36 am
Forum: 240-300 "Big Block" Six Performance
Topic: Gas mileage comparison update...
Replies: 3
Views: 334

Re: Gas mileage comparison update...

Great mileage numbers :beer: Can you post if the truck is a F100 or F250? [F150] Motor type & size? [4.9L] Carb, rear end gears, tire size? [Carter YF; 3.08; 215/75X15] Is it an automatic or stick? [manual O.D.] Are those numbers all open road / Freeway? [yes] Thanks for the time [You are welco...
by 1986F150six
Tue Sep 24, 2019 1:30 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Gas mileage comparison update...
Replies: 3
Views: 334

Gas mileage comparison update...

Having just returned from the 2019 Garagemahal Truck Show, I need to update this data. One consideration for this year's data is that I had a passenger. Also, part of this year's aerodynamic modification [cardboard tube grill cover] had to be removed after the show, before the return drive, due to w...
by 1986F150six
Tue Sep 10, 2019 1:56 pm
Forum: E-Bay Finds
Topic: Clifford 2 X 4 intake manifold
Replies: 1
Views: 227

Clifford 2 X 4 intake manifold

I shared this on the FTE forum and realized someone here might enjoy seeing this.

https://www.ford-trucks.com/forums/1595 ... candy.html
by 1986F150six
Thu Jul 25, 2019 9:16 am
Forum: 240-300 "Big Block" Six Performance
Topic: PCV valve
Replies: 3
Views: 302

Re: PCV valve

Perhaps it is sticking. Have you cleaned it or replaced recently?
by 1986F150six
Mon Jul 15, 2019 2:53 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Ford 240/300 P&C Distributor As A Spare
Replies: 7
Views: 619

Re: Ford 240/300 P&C Distributor As A Spare

Food for thought: https://www.ebay.com/itm/1965-67-Ford-Truck-240ci-300ci-rebuilt-distributor-See-compatibility-chart/173949668644?fits=Make%3AFord&hash=item2880354d24:g:2s8AAOSwPHZdGQha https://www.ebay.com/itm/NOS-Ford-1972-Galaxie-500-1973-Econoline-Van-Distributor-240ci-E100-E200-E300/141669...
by 1986F150six
Tue Jul 02, 2019 8:30 am
Forum: Wanted
Topic: Intake manifold
Replies: 1
Views: 405

Re: Intake manifold

Looking for an Offenhauser intake manifold for 240-300 ci inline 6 and/or heavy duty exhaust manifold . https://www.ebay.com/itm/Ford-Heavy-Duty-300-4-9-F600-F700-NOS-ORIGINAL-Exhaust-Manifold-D7TE-9430-FC/192917978643?hash=item2ceacebe13:g:vZoAAOSwH59c3Fx5 https://www.ebay.com/itm/300-4-9-Ford-Hea...
by 1986F150six
Tue Jun 25, 2019 4:06 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Looking For USA Made HEI Distributor
Replies: 19
Views: 1170

Re: Looking For USA Made HEI Distributor

Forum member wsa111 sells this type of distributor and offers recurving. I do not know the point of origin for the ones he sells, but you can ask him.
by 1986F150six
Fri Jun 14, 2019 7:46 am
Forum: 240-300 "Big Block" Six Performance
Topic: VINTAGE CHAMP CAR REPLICA BUILD
Replies: 51
Views: 7405

Re: VINTAGE CHAMP CAR REPLICA BUILD

Very nice work! :thumbup:
by 1986F150six
Wed May 08, 2019 3:06 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 HD heavy duty exhaust manifold
Replies: 71
Views: 30728

Re: 300 HD heavy duty exhaust manifold

Congratulations on a great find! :thumbup:
by 1986F150six
Wed Apr 10, 2019 10:35 am
Forum: 240-300 "Big Block" Six Performance
Topic: 89 4.9 cam timing
Replies: 12
Views: 1048

Re: 89 4.9 cam timing

BigBlue94 wrote:Nice!

A 10,000 lb toolbox!?


Deep well sockets? :lol:
by 1986F150six
Wed Mar 27, 2019 3:01 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Exhaust question...
Replies: 12
Views: 1103

Re: Exhaust question...

Thank you, gentlemen. Please keep the information flowing! :thumbup:
by 1986F150six
Tue Mar 26, 2019 9:21 am
Forum: 240-300 "Big Block" Six Performance
Topic: Exhaust question...
Replies: 12
Views: 1103

Re: Exhaust question...

What carb did you end up using and what is your present gas mileage? Carter YF 4901 S [from a 1970 F350]. The following is a report from last year: Well, I am back from the 2018 Garagemahal Ford Truck Show [what a great time to be had by all who attended!!!]. I attended in 2017, but due to mechanic...
by 1986F150six
Mon Mar 25, 2019 3:22 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Exhaust question...
Replies: 12
Views: 1103

Re: Exhaust question...

My overall quest is for fuel efficiency. I was hoping to create a more free flowing exhaust. It is an original log manifold, not HD.
by 1986F150six
Thu Mar 21, 2019 10:56 am
Forum: 240-300 "Big Block" Six Performance
Topic: Exhaust question...
Replies: 12
Views: 1103

Exhaust question...

Good morning,

When replacing the head pipe, beginning at the 4.9L stock log exhaust manifold, can a larger diameter pipe be used? Can the end of the larger pipe be flared such that it will mate with the exhaust manifold ball shaped exit?

Thank you in advance!


1986 F150 w/ 4.9L engine.
by 1986F150six
Mon Mar 11, 2019 1:46 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 1968 Ford F250 with 4.9 ltr six
Replies: 8
Views: 886

Re: 1968 Ford F250 with 4.9 ltr six

Clifford 2x4 Intake Manifold, talk about something hard to find. :nod: If I could find one I would put it on my "Street Build 300 motor" and drop it in my truck :thumbup: https://www.ebay.com/itm/FORD-300-6-cyl-CLIFFORD-INTAKE-MANIFOLD-DUAL-CARBS-CAM-HEI-DIST-TIMING-GEAR-4-9/223442206058?...
by 1986F150six
Mon Mar 11, 2019 10:52 am
Forum: 240-300 "Big Block" Six Performance
Topic: EFI Exhaust Manifold Conversion
Replies: 14
Views: 1239

Re: EFI Exhaust Manifold Conversion

Some intake manifolds have a hole adjacent to the carb mounting surface (about the size of a penny) that is for the EGR. The carb spacer under the carb has a similar passageway. You can block that hole if you are not going to use the EGR system. I recommend keeping the EGR system intact. There is a...
by 1986F150six
Mon Feb 11, 2019 2:38 pm
Forum: 240-300 "Big Block" Six Performance
Topic: What ignition system?
Replies: 10
Views: 1132

Re: What ignition system?

Dr Jay wrote:I use the MSD with the DS2 distributor. Very satisfied. In use for 3 years with not one complaint.



I have used the same for maybe 8 years. The only downside is that this system seems to be hard on the distributor cap and rotor.
by 1986F150six
Tue Jan 29, 2019 10:15 am
Forum: 240-300 "Big Block" Six Performance
Topic: What ignition system?
Replies: 10
Views: 1132

Re: What ignition system?

Jason832, check with Bill [wsa111]. He sold me a NOS Motorcraft Duraspark distributor which he recurved for my application [formerly a feedback 1986 with EGR removed]. I currently use a MSD 6AL ignition module. The truck runs great and returns good gas mileage.
by 1986F150six
Tue Jan 29, 2019 10:06 am
Forum: 240-300 "Big Block" Six Performance
Topic: Hypothetical power output question?
Replies: 9
Views: 957

Re: Hypothetical power output question?

My thanks to both of you gentlemen for answering what may be a simplistic question. Thank you, Harte3 , for the link. I plugged in parameters for my stock 4.9L [compression ratio and RPMs for horsepower peak] and it spit back 119 HP [compared to claimed 120]. Frenchtown Flyer , I agree that the bett...
by 1986F150six
Mon Jan 28, 2019 2:39 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Hypothetical power output question?
Replies: 9
Views: 957

Hypothetical power output question?

I am curious about the power comparison of the 4.9L and the 5.0L engines. I have intentionally chosen 1984 as that was the last year [ I believe ] for both being carbureted in trucks and Broncos. I personally like the six cylinder and its power characteristics. Looking at factory specification sheet...
by 1986F150six
Thu Jan 24, 2019 3:25 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Engine vibration on high mi. engine
Replies: 3
Views: 466

Re: Engine vibration on high mi. engine

Could a motor mount be bad? Have you checked the tension of the v-belt(s)?
by 1986F150six
Tue Jan 22, 2019 10:41 am
Forum: 240-300 "Big Block" Six Performance
Topic: Holley Carb left turn stumble or stall!
Replies: 23
Views: 1914

Re: Holley Carb left turn stumble or stall!

Dr Jay wrote:Huntsville/ Madison
I have folks in Muscle Shoals!


And I have folks in Huntsville! :lol:
by 1986F150six
Tue Jan 22, 2019 8:26 am
Forum: 240-300 "Big Block" Six Performance
Topic: 300 torque build 85 Bronco
Replies: 313
Views: 22520

Re: 300 torque build 85 Bronco

That valve cover is "purdy"! :D
by 1986F150six
Mon Jan 21, 2019 4:01 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 1996 4.9l Headers
Replies: 6
Views: 785

Re: 1996 4.9l Headers

Very nice work!
by 1986F150six
Mon Jan 21, 2019 3:08 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Holley Carb left turn stumble or stall!
Replies: 23
Views: 1914

Re: Holley Carb left turn stumble or stall!

Dr. Jay, how close to Sheffield [Shoals area] is "North Alabama"?
by 1986F150six
Tue Nov 27, 2018 11:41 am
Forum: 240-300 "Big Block" Six Performance
Topic: Points distributors?
Replies: 25
Views: 1714

Re: Points distributors?

Do you know where one can find a new (not rebuilt) 68-74 points distributor for a 300 motor in a 1971 F250? If rebuilt is the only way to find one now a days, who has the best one? Just found these: https://www.ebay.com/itm/NOS-1968-1972-FORD-GALAXIE-CUSTOM-500-F100-F250-240-300-6CYL-DISTRIBUTOR-NE...
by 1986F150six
Thu Nov 01, 2018 12:25 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300/4.9L "reduced overlap" camshaft listed in 1982 Ford Light Truck Facts literature.
Replies: 3
Views: 756

300/4.9L "reduced overlap" camshaft listed in 1982 Ford Light Truck Facts literature.

Reading Ford supplied information on another forum, I saw that in 1982 a different camshaft [reduced overlap] was specified for all 300 [4.9L] engine manual / transmission trucks with 2.47 or 2.75 gear ratios for 49 state models.

http://www.garysgaragemahal.com/300-six1.html
by 1986F150six
Wed Oct 31, 2018 10:55 am
Forum: 240-300 "Big Block" Six Performance
Topic: Video of engine stumbling - ideas?
Replies: 12
Views: 1543

Re: Video of engine stumbling - ideas?

Dr. Fever, You stated that it was missing before replacing intake manifold, carburetor and exhaust manifold. If installed correctly [ I bet they were !], the missing [ before and after ] is most likely caused by something other than these items. Maybe pull each spark plug wire [ 1 @ a time ] while i...
by 1986F150six
Wed Oct 24, 2018 9:40 am
Forum: 240-300 "Big Block" Six Performance
Topic: Polished intake
Replies: 28
Views: 2636

Re: Polished intake

Oooh... that's nice! :)
by 1986F150six
Mon Oct 15, 2018 11:35 am
Forum: 240-300 "Big Block" Six Performance
Topic: 1986 F-150, c6, 2wd, offy, holley 600 - bad mpg
Replies: 17
Views: 2752

Re: 1986 F-150, c6, 2wd, offy, holley 600 - bad mpg

... This may sound crazy, but try a tank driving at 65 mph instead. At least then you will know what that extra ten mph is costing you. I agree... here is some mileage data from a 1200 mile round trip [several times]: 2014 55-62 mph with no aerodynamic modifications = 21.93 mpg [highest tank = 23.2...
by 1986F150six
Fri Oct 12, 2018 11:45 am
Forum: 240-300 "Big Block" Six Performance
Topic: Spares - DSII Ignition System
Replies: 16
Views: 1694

Re: Spares - DSII Ignition System

Clean and compact installation!
by 1986F150six
Tue Oct 09, 2018 1:59 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Whos doing best fuel economy over power???
Replies: 17
Views: 1943

Re: Whos doing best fuel economy over power???

My 1986 F150 with 4.9L, 4 speed manual O.D. and 3.08 gears returns ~17.5 to 23.0 mpg. https://www.ford-trucks.com/forums/1325963-gas-mileage-recipe-4-9l-300-a.html I just finished reading that long thread, great info! Thanks for posting the link. I ran my TorqueMotor in my old 81 F-150 for three ye...
by 1986F150six
Tue Oct 09, 2018 1:38 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Progressive 2 barrel orientation
Replies: 22
Views: 2492

Re: Progressive 2 barrel orientation

THE FRENCHTOWN FLYER wrote:I think rather than smoking the cigar I'd just live with the vacuum leak. But that's just me.


But, I did not inhale.... :wink:
by 1986F150six
Tue Oct 09, 2018 10:03 am
Forum: 240-300 "Big Block" Six Performance
Topic: Progressive 2 barrel orientation
Replies: 22
Views: 2492

Re: Progressive 2 barrel orientation

I tried this and it worked: https://www.bing.com/videos/search?q=Sc ... &FORM=VIRE

The air cleaner was removed and the carburetor was sealed using a good quality duct tape.