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Search found 3283 matches

by CZLN6
Tue Mar 31, 2020 1:30 pm
Forum: 144-250 "Small Block" Six Performance
Topic: '69 250 Head/Parts
Replies: 3
Views: 171

Re: '69 250 Head/Parts

Howdy '65 Stang: Q- Would a cam from a stock '69 250 be an upgrade if installed it in a stock '66 170? A- Yes, but marginally. The 170 cam specs are- Duration 240 Degrees, lift .348", timing is favoring a retarded curve and the lobes have a very peaky profile. The 250 specs are- 256 duration, l...
by CZLN6
Mon Mar 30, 2020 1:09 pm
Forum: 144-250 "Small Block" Six Performance
Topic: 200 Deck Clearance
Replies: 5
Views: 160

Re: 200 Deck Clearance

Howdy Sean:

Did you measure the deck height on this engine before you tore down? Always a good Idea. Stock 200 blocks deck height typically measure around .025". Replacement pistons are down .005" to compensate for machining to true the block.

Adios, David
by CZLN6
Mon Mar 30, 2020 1:03 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Replacing the cam
Replies: 11
Views: 265

Re: Replacing the cam

Howdy Georgia and All: The problem with pulling the cam, with the engine in the car, is getting the lifters out of their bores and off of the cam. There is a rare tool for pulling the lifters with the engine in but, getting them out the top of the engine through the slots on the top of the block is ...
by CZLN6
Sun Mar 22, 2020 4:03 pm
Forum: 144-250 "Small Block" Six Performance
Topic: ‘74 250 - timing chain - how much slack is acceptable?
Replies: 3
Views: 236

Re: ‘74 250 - timing chain - how much slack is acceptable?

Howdy Bob and All: Since you have it apart, replacing the chain is cheap insurance. You said the current chain has 1/2" of slack, or deflection, check the new chain for comparison. And let us know. You might also do some testing on how many degrees of cam movement between the two points of slac...
by CZLN6
Sat Mar 21, 2020 2:03 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Carburetor Issues
Replies: 6
Views: 721

Re: Carburetor Issues

Howdy Back Maholmes and All: I'm guessing the one barrel carb you're working with is a Holley #1946. Is that correct? My limited experience with them has not been good. They are one of FoMoCos first efforts at cleaning up these engine as per EPA. They are encumbered with thermal, vacuum other feed b...
by CZLN6
Fri Mar 20, 2020 1:17 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Autolite 1100 bogging on throttle blip
Replies: 36
Views: 976

Re: Autolite 1100 bogging on throttle blip

Howdy Back Solodad: THe cylinder head casting code is on top of the intake log just behind the carb. The block casting code is on the passenger side of the block under the exhaust manifold. There is a code on top of the exhaust manifold as well. The carb may have an ID tag attached to one of the top...
by CZLN6
Thu Mar 19, 2020 1:48 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Autolite 1100 bogging on throttle blip
Replies: 36
Views: 976

Re: Autolite 1100 bogging on throttle blip

Howdy All: Econo- Your 1101 was used on 1963 & '64 Ford cars with a 223 six engine. Yes, LoM distributors. Solodad- On the centrifugal advance first check to see what swing weights you have. In any case the stock advance on these early distributors was very slow. IIWIYS, I wouldn't do any thing ...
by CZLN6
Wed Mar 18, 2020 2:16 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Autolite 1100 bogging on throttle blip
Replies: 36
Views: 976

Re: Autolite 1100 bogging on throttle blip

Howdy Soledad and All: What transmission? GIven the rear gear ratio I'm guessing a C4 auto. IF that is the case, set the initial advance at 15 degrees BTDC. That is also a high altitude thing. you will find that is the Shop Manual. Resetting the initial advance without the vacuum should help. To beg...
by CZLN6
Thu Feb 20, 2020 12:27 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Harmonic balancer 144 to 200
Replies: 4
Views: 737

Re: Harmonic balancer 144 to 200

Howdy Back Phil: Does your 1960 144 bottom pulley have a rubber ring between the inner and outer rings? I know that beginning in '63 the 144 engines did have that inner rubber ring. To the best of my knowledge, all other dimensions between the '60 and '63 pulleys are the same. Check it out. If your ...
by CZLN6
Thu Feb 20, 2020 12:12 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Valvetrain sound after 2000 rpm.
Replies: 5
Views: 752

Re: Valvetrain sound after 2000 rpm.

Howdy Back Yoda and All: Since the engine has been modified, I'd add to Bill's advice to remove the valve cover to check for sufficient oil- and also to check on the condition of the rocker arms and the ball ends of the push rods for excessive wear. Does this engine have adjustable or non-adjustable...
by CZLN6
Fri Feb 14, 2020 1:00 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Inline 6 rebuild
Replies: 7
Views: 1017

Re: Inline 6 rebuild

Howdy Jeff: And welcome to THE FORUM! YEs, it is that good. All 200 and 250 heads are basically the same. All '78 head are the same. Look for a '78 and later casting. Several companies have performance cams for upgrades, but check out our host on this website- Vintage Inlines. I would strongly encou...
by CZLN6
Sun Feb 09, 2020 1:25 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Valve Spring Retainer Rotators?
Replies: 7
Views: 993

Re: Valve Spring Retainer Rotators?

Howdy Back: Hey Bill: two piece retainers first appeared in 1959 on the brand new 1960 Falcons with 144 engines. That was quite a bit prior to regular use of unleaded fuel. I think there was another reason for the two piece retainers on small sixes, but I'll be darned if I can figure out why. We use...
by CZLN6
Sat Feb 08, 2020 12:25 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Valve Spring Retainer Rotators?
Replies: 7
Views: 993

Re: Valve Spring Retainer Rotators?

Howdy PB: Yup. rotators are standard on all small six intake and exhaust valve springs- to the best of my knowledge. Interesting because FoMoCo bean counters are always looking for ways to cut cost. I can't help but believe that two piece retainers are more expensive to make and to install than a on...
by CZLN6
Mon Dec 30, 2019 1:23 pm
Forum: 144-250 "Small Block" Six Performance
Topic: 76 maverick 250 new cam
Replies: 32
Views: 2299

Re: 76 maverick 250 new cam

Howdy back All: Happy New Year. I'm in the midst of my wife's B-day celebration so this will be short. When changing cam on a '73 and later 250 engine be sure to order a timing gear set for an early, before '72 250. Refer to page 46 in the Handbook. FoMoCo advance on the 250 cam timing set for bette...
by CZLN6
Mon Dec 23, 2019 12:24 pm
Forum: 144-250 "Small Block" Six Performance
Topic: 76 maverick 250 new cam
Replies: 32
Views: 2299

Re: 76 maverick 240-300 new cam

Howdy Maholmes 76: And welcome to THE FORUM! Yes, it is that good. While you are doing your homework on what you have, engine wise, I'd suggest that you assess the whole drive train. Check out the code plate on the frame of the driver side door. Also the VIN number will ID what engine and trans your...
by CZLN6
Tue Nov 12, 2019 1:33 pm
Forum: 144-250 "Small Block" Six Performance
Topic: High Ratio rocker arms for 200 I6
Replies: 9
Views: 914

Re: High Ratio rocker arms for 200 I6

Howdy:

250 rockers are interchangeable. They are shaft mounted.
240 and 300 rockers are not interchangeable. They are stud mounted.

What are you planning to do?

Adios, David
by CZLN6
Wed Nov 06, 2019 1:10 am
Forum: 144-250 "Small Block" Six Performance
Topic: Testing valve spring pressure
Replies: 10
Views: 1347

Re: Testing valve spring pressure

Howdy Invectvus: I like your thinking and testing spring pressures at both open and closed position. BUt your conclusion may have to consider cam timing, cam lift and rpm range. The good thing about valve springs is that they are relatively easy to change. That's my two cents, for what it's worth. A...
by CZLN6
Sat Nov 02, 2019 1:10 pm
Forum: 144-250 "Small Block" Six Performance
Topic: 64 170" carb/disp matching questions
Replies: 8
Views: 1033

Re: 64 170" carb/disp matching questions

Howdy Snake: And welcome to the FORUM. Yes, it is that good. First advice was to ID everything. It is good to know what you are working with. Casting code for the head is on top of the intake log, behind the carb mount. For the block, look under the exhaust manifold. Someone already said that with a...
by CZLN6
Thu Oct 24, 2019 11:29 am
Forum: 144-250 "Small Block" Six Performance
Topic: 200ci calculated static compression ratio - math check appriciated
Replies: 4
Views: 1665

Re: 200ci calculated static compression ratio - math check appriciated

Howdy back Invictivus: You are on the right track. I need more info before I can give you exact help. What year head casting are you working with. In general, early castings- pre '70 are typically 52 cc. '74 and later are typically 62 cc. In both cases chambers can vary by 2 ccs per chamber. The onl...
by CZLN6
Mon Oct 07, 2019 3:43 pm
Forum: 144-250 "Small Block" Six Performance
Topic: New carb or new dizzy???
Replies: 24
Views: 3518

Re: New carb or new dizzy???

Howdy Gimmea:

That's a start. Now verify that your carb is a SCV Holley 1940. IF it is not you will still have a mismatch.

Keep it coming.

Adios, David
by CZLN6
Sun Oct 06, 2019 1:23 pm
Forum: 144-250 "Small Block" Six Performance
Topic: New carb or new dizzy???
Replies: 24
Views: 3518

Re: New carb or new dizzy???

Howdy back Gimmea: How did the carb rebuild go? On the LoM the two springs are next to each other. On the '68 and later, with both vacuum and centrifugal advance, the springs are under the point plate and on opposite sides. Once you get your rebuilt carb installed and working to its best, try settin...
by CZLN6
Sat Oct 05, 2019 12:28 pm
Forum: 144-250 "Small Block" Six Performance
Topic: New carb or new dizzy???
Replies: 24
Views: 3518

Re: New carb or new dizzy???

Howdy Gimmea: And welcome to the forum. Before advise and recommends I have a couple more questions. Are you building toward more engine performance? reliability? low maintenance? Mileage? Are you interested in maintaining originality? What are your long terms plans for this car/engine? Budget? How ...
by CZLN6
Sat Sep 14, 2019 9:31 pm
Forum: 144-250 "Small Block" Six Performance
Topic: exhaust
Replies: 7
Views: 1417

Re: exhaust

howdy Georgia 200: No, it is not possible to open a stock exhaust manifold past 2" and still maintain the stock type firewall seal between the manifold and the head pipe. Another option is to use a late style manifold that attaches a catalytic converter. IT would have to be modified to fit a 2....
by CZLN6
Tue Aug 20, 2019 12:24 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Best Dizzy to get
Replies: 10
Views: 1847

Re: Best Dizzy to get

Howdy Star: So long as it is a DS II or an HEI type, that has been recurved for your engine and supported with a good performance coil, you are good to go. My choice has been and is the DS II for a number of reasons. #1 the DS II is stock appearing, from '75 on, if that matters to you. You also have...
by CZLN6
Tue Aug 20, 2019 12:07 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Valve cover off, now what?
Replies: 17
Views: 2466

Re: Valve cover off, now what?

Howdy Doc: The rocker area looks quit clean. Good job on maintenance. While you have the cover off, I'd suggest that you do a cold start on your engine while watching for how long it takes for oil to reach the number 1 rocker. When the rocker arm shaft gets gunked up it slows the transfer of oil to ...
by CZLN6
Thu Aug 08, 2019 11:29 am
Forum: 144-250 "Small Block" Six Performance
Topic: Header Coating
Replies: 8
Views: 950

Re: Header Coating

Howdy Ryan: I think coating header is a good idea. Your header is likely one of the most expensive pieces on your engine. Especially if you are in a high rust area. I had mine coated by HPC, both inside and out. I had to ship to them. They were south of SLC. They were the only source back then. Test...
by CZLN6
Sat Aug 03, 2019 10:17 am
Forum: 144-250 "Small Block" Six Performance
Topic: Head swap
Replies: 13
Views: 1201

Re: Head swap

Howdy ford 65: the difference in cc between a stock steel shim head gasket at .025" and an aftermarket composite head gasket is about 5 ccs. Assuming your head and block are level no milling would be necessary. You would lose about a half a point in compression. 8.5:1 to 8:1. Not good unless yo...
by CZLN6
Mon Jul 22, 2019 11:00 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Hi from a new member and a question.
Replies: 27
Views: 2456

Re: Hi from a new member and a question.

HowdyAll:

C8 xx says it is a 1968 casting. IMHO, it is the best stock exhaust manifold. Good metal and more gusseting then earlier ones and fewer bungs, taps and bumps then later ones. If you decide to not use it, put it for sale here.

Code decoding is in the Handbook.

Adios, David
by CZLN6
Mon Jul 22, 2019 9:46 am
Forum: 144-250 "Small Block" Six Performance
Topic: Hi from a new member and a question.
Replies: 27
Views: 2456

Re: Hi from a new member and a question.

Howdy Spacecadet: And welcome to The Forum. From looking at your photo and your description it appears that you have a '68- 69 distributor with vacuum and centrifugal advance. To identify what year block, head and exhaust manifold look for the casting codes on each. For the head you'll find the cast...
by CZLN6
Mon Jul 15, 2019 9:37 am
Forum: 144-250 "Small Block" Six Performance
Topic: Stock fuel pump flow rate.
Replies: 9
Views: 1799

Re: Stock fuel pump flow rate.

Howdy Back Mustang: First some questions. How old is your current fuel pump? What cam are you using and how old is it? The stock fuel pump on our sixes runs off of an eccentric lobe on the cam. As this lobe wears it gives less lift to the fuel pump lever. How hot was it on the day that this episode ...
by CZLN6
Mon May 27, 2019 3:42 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Vacuum Advance 101
Replies: 25
Views: 2586

Re: Vacuum Advance 101

Howdy DadDrake and all: Are you aware that you are working with a vacuum advance/retard system on your distributor? IT was a short term crutch by FoMoCo used in 1968 and 1969. Beginning in 1970 they switched to a Carter YF carb. In 1974 they introduced the first generation of the Dura Spark, pointle...
by CZLN6
Mon May 20, 2019 11:28 am
Forum: 144-250 "Small Block" Six Performance
Topic: Maximum Lift - Clearance
Replies: 11
Views: 1374

Re: Maximum Lift - Clearance

Howdy Matt and All: My first thought is why not hold off on the 1.65 rocker arms and start with 1.5. You can alway add higher lift rocker arms later- if you think you still need more lift. You didn't say what the lift at the cam is? The extra lift from the 1.65 compared to 1.5 isn't much, but it may...
by CZLN6
Mon May 13, 2019 11:17 am
Forum: 144-250 "Small Block" Six Performance
Topic: mild rebuild of 200 - cam, lifters, piston questions
Replies: 52
Views: 4683

Re: mild rebuild of 200 - cam, lifters, piston questions

Howdy Back Tim and all: Good news on the exhaust manifold. The connection on the '63 and later is called a "Fire Wall" connecter. It seals much better than the earlier flat gasket style. IIWY I'd get a proper fire wall connector there when I had the 2" pipe system made up. Chad mentio...
by CZLN6
Sat May 11, 2019 2:12 am
Forum: 144-250 "Small Block" Six Performance
Topic: mild rebuild of 200 - cam, lifters, piston questions
Replies: 52
Views: 4683

Re: mild rebuild of 200 - cam, lifters, piston questions

Howdy Back Tim and All: The C3 casting code on your replacement exhaust manifold is a nice upgrade over the '62. It has a 2" outlet and more material and gusseting to make it less prone to cracking. It can make do until you want to spring for the header. Add a 2" system to it and it is a g...
by CZLN6
Thu May 09, 2019 1:41 am
Forum: 144-250 "Small Block" Six Performance
Topic: mild rebuild of 200 - cam, lifters, piston questions
Replies: 52
Views: 4683

Re: mild rebuild of 200 - cam, lifters, piston questions

Howdy Back Tim and All: What is the casting code on the manifold you salvage to replace the cracked one? If it is a C5 or later casting, you will be all right- til it's time for the header. There is a piece on selecting and modifying a stock type manifold on page 37 of the latest edition of the hand...
by CZLN6
Tue May 07, 2019 6:16 pm
Forum: 144-250 "Small Block" Six Performance
Topic: "Something always leaking"
Replies: 17
Views: 2703

Re: "Something always leaking"

Howdy Doc:

Enjoy the hunt. And no these old things don't always leak, but they do require TLC. Add the front and rear crank seals to your routine inspections. Good hunting.

Adios, David
by CZLN6
Tue May 07, 2019 4:36 pm
Forum: 144-250 "Small Block" Six Performance
Topic: mild rebuild of 200 - cam, lifters, piston questions
Replies: 52
Views: 4683

Re: mild rebuild of 200 - cam, lifters, piston questions

HOwdy Back Tim: Wow! what an exciting adventure. Thanks and glad to hear that The Handbook is useful to you. You are already getting good advice from Bill and Ron and I'd agree with them. Bill is the guy to see once you get your cam, carb and ignition in mind. He can recurve the advance curve on the...
by CZLN6
Fri Apr 26, 2019 7:54 pm
Forum: 144-250 "Small Block" Six Performance
Topic: 250 build advise
Replies: 40
Views: 2911

Re: 250 build advise

Howdy Back: Tightening the quench on a 250 is a major issue on a 250 due to the huge deck height. It involves special pistons, possibly connection rods and block machining. Deck height, measured from the top part of the piston to the deck of the block is typically about .150". When you said the...
by CZLN6
Thu Apr 25, 2019 6:44 pm
Forum: 144-250 "Small Block" Six Performance
Topic: 250 build advise
Replies: 40
Views: 2911

Re: 250 build advise

Howdy sixshooter Maverick: What is the compression on this engine? Since the engine is buttoned up and you don't want to unbutton, carb and ignition are about all that's left. An adapter with a 2 barrel carb will be a clearance and linkage issue. Again, depending on the compression ratio, select a c...
by CZLN6
Tue Apr 23, 2019 9:42 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Always something...Leaking Radiator
Replies: 10
Views: 1193

Re: Always something...Leaking Radiator

Howdy ssg66stang: "Can you explain why it's better for me to go this route (other than cost benefits) please?" The ability to transfer heat is better with the original materials than aluminum. The fitting of the original radiator is a bolt in/out. Original hoses fit. "Do electric fans...
by CZLN6
Mon Apr 22, 2019 3:25 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Always something...Leaking Radiator
Replies: 10
Views: 1193

Re: Always something...Leaking Radiator

HOwdy Back:

All things considered, I'd go with Leo's suggestion and get the stock radiator rebuilt. I'd also replace your hoses, all of them. Good luck.

Adios, David
by CZLN6
Mon Apr 22, 2019 10:36 am
Forum: 144-250 "Small Block" Six Performance
Topic: Always something...Leaking Radiator
Replies: 10
Views: 1193

Re: Always something...Leaking Radiator

Howdy ssg66stang: The advantages of a two row are lighter, less wide (or deep) and usually less cost. Without knowing your engine needs and driving conditions I'm at a bit of a loss to advise you on which will meet your cooling needs better. With the auxillary thermostat and fan I'm guessing a two r...
by CZLN6
Fri Apr 05, 2019 8:20 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Autolite 1100 carb help needed
Replies: 27
Views: 2701

Re: Autolite 1100 carb help needed

Howdy Jones: I couldn't quite tell from the photo but it appears the the vent rod hole is plugged and you don't need it the brass, angled vent tube in the top of the carb will adequately vent the fuel bowl. IT appears that your Autolite 1100 does not have a spark control valve which is an indication...
by CZLN6
Fri Mar 29, 2019 8:24 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Not Enough Carb?
Replies: 11
Views: 1329

Re: Not Enough Carb?

Howdy Back Matt: Well the 1.08 4100 would be ideal, but the 1.12 is more easily available. The 1.08 is rated at 480 cfm. The 1.12s are more readily available and are rated a 600 cfm. Either would be a good starting place. Tuning main jets, accelerator pump stroke and air screw will be where you will...
by CZLN6
Thu Mar 28, 2019 11:56 am
Forum: 144-250 "Small Block" Six Performance
Topic: Not Enough Carb?
Replies: 11
Views: 1329

Re: Not Enough Carb?

Howdy Back Matt: WOW!!! Cool build. I'd also want to know your engine rpm range for most of your driving. While the 1.23 would be ideal for most street driving situations the option of a 4100 would give you that with the primary barrels and then more for a stronger top end when the secondaries kick ...
by CZLN6
Wed Mar 27, 2019 3:20 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Best 2100 size to use
Replies: 29
Views: 2395

Re: Best 2100 size to use

Howdy Star and All:

I vote for putting it on and giving it a try also. Worst is likely a stuck needle valve. let us know.

Adios, David
by CZLN6
Wed Mar 27, 2019 3:16 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Would a 70 250 head bolt on 67 200 block?
Replies: 14
Views: 1559

Re: Would a 70 250 head bolt on 67 200 block?

Howdy Back Jones:

Did the builder mill the stock head to compensate for the thicker composite head gaskets available today? Did you get paper work that tells what they did? How is it running? Are you still using the Load-O-Matic distributor and stock type carb?

Keep it coming

Adios, David
by CZLN6
Mon Mar 25, 2019 11:53 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Best 2100 size to use
Replies: 29
Views: 2395

Re: Best 2100 size to use

Howdy Back:

Yup, Mike's is a good ID source. In addition to the stamped foot all factory carbs came with a metal ID tag with a code for dating, application and other info. Unfortunately, the metal ID tag frequently disappears on the first rebuild.

Hey Star- how's your progress?

Adios, David
by CZLN6
Sun Mar 24, 2019 1:29 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Would a 70 250 head bolt on 67 200 block?
Replies: 14
Views: 1559

Re: Would a 70 250 head bolt on 67 200 block?

Howdy Jones and All: You've got your question answered, so now, I have a question for you. You said that you've already done alot of work on your engine. What have you had done? Specifically, what on the head? The answer to that question would effect how I would respond to acquiring a 1970 250 head....
by CZLN6
Sun Mar 24, 2019 1:19 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Best 2100 size to use
Replies: 29
Views: 2395

Re: Best 2100 size to use

Howdy Back Star and All: "Very strange, so its more or less luck with testing K clusters?" No. but you will need to know what the application of the 2100 was, from the factory. The 2100s are marked with a stamped code on the mounting foot of each carb. The K-clusters are not stamped but ha...

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