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Search found 3326 matches

by pmuller9
Thu Oct 17, 2019 6:46 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Loss of compression in all cylinders
Replies: 14
Views: 71

Re: Loss of compression in all cylinders

Are there any particles in the oil in the pan?
by pmuller9
Thu Oct 17, 2019 1:02 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Holley 5200 carb
Replies: 67
Views: 1952

Re: Holley 5200 carb

If you get the cruise A/F ratio right for cruising and the WOT is still too rich then you may need to add 6-32 screw in restriction jets in the Power Valve restriction passages.
https://www.holley.com/products/fuel_sy ... ets/page=3
by pmuller9
Wed Oct 16, 2019 8:11 pm
Forum: 240-300 "Big Block" Six Performance
Topic: my new-to-me 240
Replies: 10
Views: 209

Re: my new-to-me 240

I have a v.g. 240 block crank and head, but... rods are the newer style If you want to build a screaming 240 six Molnar makes a 7.130" long billet rod for the Chevy 292 six that will fit the 240 crank. The 240 crank journals are turned down to 2.100" and the journals are widened .035"...
by pmuller9
Wed Oct 16, 2019 1:47 pm
Forum: 240-300 "Big Block" Six Performance
Topic: my new-to-me 240
Replies: 10
Views: 209

Re: my new-to-me 240

Yes, those are the two least expensive rods, the Compstar being the stronger of the two. Each supplier only has a few in stock and they go fast once the supply is in leaving you waiting for the next production run if you miss them. It is cheaper to buy a set of 8 than to try to buy 6. The truth is n...
by pmuller9
Wed Oct 16, 2019 12:19 am
Forum: 240-300 "Big Block" Six Performance
Topic: my new-to-me 240
Replies: 10
Views: 209

Re: my new-to-me 240

As you know the early 240 used Ford 289 V8 pistons. The 240 rods on a 300 crank is intended for high rpm naturally aspirated use where the piston weight is reduced by using a 1.2" pin height. The failure mode is stretch at TDC during the end of the exhaust stroke. The big end of the rod bends a...
by pmuller9
Tue Oct 15, 2019 8:08 pm
Forum: 240-300 "Big Block" Six Performance
Topic: my new-to-me 240
Replies: 10
Views: 209

Re: my new-to-me 240

I don't see any pics.
by pmuller9
Thu Oct 10, 2019 4:11 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Intermittent miss
Replies: 16
Views: 406

Re: Intermittent miss

The 1990 engine uses different timing than the 1976 engine. The 76 engine uses a total timing (Vacuum advance disconnected) around 36 degrees BTDC The total timing on the 90 engine is closer to 30 degrees BTDC because of the fast burn combustion chambers. The mechanical advance on the HEI distributo...
by pmuller9
Wed Oct 09, 2019 10:21 am
Forum: 240-300 "Big Block" Six Performance
Topic: setting valve spring heights
Replies: 8
Views: 330

Re: setting valve spring heights

Use .040" shims under the head to check the pushrod length. They can be .040" thick strips of sheet metal. I'm sure you meant 3002-7 rockers instead of 3001-7 Yes you can check piston TDC without piston rings. The late model EFI block oil filter insert with the drain back feature number is...
by pmuller9
Tue Oct 08, 2019 9:52 am
Forum: 240-300 "Big Block" Six Performance
Topic: setting valve spring heights
Replies: 8
Views: 330

Re: setting valve spring heightshgt

Go tight between 1.690” and 1.700"
The extra few lbs of pressure will give you margin as the springs lose spring rate over time.
by pmuller9
Sun Oct 06, 2019 1:22 pm
Forum: 240-300 "Big Block" Six Performance
Topic: setting valve spring heights
Replies: 8
Views: 330

Re: setting valve spring heights

The springs need to be shimmed to 1.700". If possible try to get the installed spring heights within .010" of each other. Shim kits come with .015", .030", .060" shim thicknesses If the spring pocket in the head is wide enough for 1.500" OD shims use Comp 4757 shim kit....
by pmuller9
Sat Oct 05, 2019 4:58 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Engine is back
Replies: 81
Views: 3001

Re: Engine is back

The intake seat is definitely deeper in the head than the exhaust seat. The intake seat insert looks like it is too low in the head I'm not sure I would want to cut that much off the exhaust insert to get equal seat heights. Using the longer exhaust valves would be an easier fix. Seat width should b...
by pmuller9
Wed Oct 02, 2019 8:58 am
Forum: 240-300 "Big Block" Six Performance
Topic: Turboing a stock 300, how to make it last?
Replies: 98
Views: 5296

Re: Turboing a stock 300, how to make it last?

curts56
What are you using for an motor mount?
Your mounts look different than the stock replacement.
by pmuller9
Tue Oct 01, 2019 2:11 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Turboing a stock 300, how to make it last?
Replies: 98
Views: 5296

Re: Turboing a stock 300, how to make it last?

88F15088 wrote:I have been mocking mine up just like how you have yours setup and it will not clear the frame rail or motor mount.

Have you changed to a low profile motor mount like the one shown?
Would that give you the room needed?
by pmuller9
Tue Oct 01, 2019 7:29 am
Forum: 240-300 "Big Block" Six Performance
Topic: Roller rockers for the EFI 300
Replies: 33
Views: 7974

Re: Roller rockers for the EFI 300

HickstyleZ

The EFI heads can be modified to breath better.
Head and valve train mods depends on the power band range.

Are you looking at making a lot of power at higher rpms or do you want the engine to make a lot of low rpm torque for heavy loads?
by pmuller9
Mon Sep 30, 2019 9:39 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Engine is back
Replies: 81
Views: 3001

Re: Engine is back

68Flareside240 wrote:Correct me if I am wrong but the only way that happens is the valve seat is a different depth. The exhaust valves keeper was further down the stem which affects installed spring height, not the height of the valve in the head, correct?

Both of those observations are correct.
by pmuller9
Sun Sep 29, 2019 1:50 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Cam and lifter question
Replies: 9
Views: 260

Re: Cam and lifter question

The log will need to be opened up so you can run a 2 barrel carb directly without the adapter.
by pmuller9
Sun Sep 29, 2019 11:20 am
Forum: 144-250 "Small Block" Six Performance
Topic: Cam and lifter question
Replies: 9
Views: 260

Re: Can and lifter question

bubba22349 wrote: But to answer your question correctly I would need some additional info on your build combo such as the head and carb you are using.

viewtopic.php?p=605813#p605813

IMO The YFA Carburetor is way too small for that engine combination.
by pmuller9
Sat Sep 28, 2019 8:56 am
Forum: Introductions
Topic: The FNG from Indiana!
Replies: 5
Views: 150

Re: The FNG from Indiana!

Do you have a manual or automatic transmission?
by pmuller9
Fri Sep 27, 2019 4:27 pm
Forum: 240-300 "Big Block" Six Performance
Topic: EFI Manifolds
Replies: 10
Views: 452

Re: EFI Manifolds

by pmuller9
Fri Sep 27, 2019 12:54 am
Forum: 240-300 "Big Block" Six Performance
Topic: Engine is back
Replies: 81
Views: 3001

Re: Engine is back

68Flareside240 wrote:Those were installed spring height, not diameter. I didn't measure intake but exhaust was 1.559" diameter

OK, I must be tired at the end of a long day LOL.
You will need the longer valves to get the 1.700" installed spring height.
by pmuller9
Fri Sep 27, 2019 12:46 am
Forum: 240-300 "Big Block" Six Performance
Topic: Engine is back
Replies: 81
Views: 3001

Re: Engine is back

Exhaust on number two looking like 1.600", intake 1.690". stock intake valve diameter is 1.780" and the exhaust is 1.559" I don't know what valves those are but certainly not correct and need to be replaced. That means there is no extra expense in getting oversized valves since ...
by pmuller9
Thu Sep 26, 2019 8:34 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Engine is back
Replies: 81
Views: 3001

Re: Engine is back

That's what I was afraid of. That was the only thing that could explain the discrepancy I was seeing, in my mind. Exhaust on number two looking like 1.600", intake 1.690". :cry: :cry: Yep, that would cause the problem. New valves should fix the problem but you now have the option of getti...
by pmuller9
Thu Sep 26, 2019 8:16 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Engine is back
Replies: 81
Views: 3001

Re: Engine is back

The valve job was not done correctly. There may have been exhaust valve seat inserts installed. The intake valve seats need to be done first so the exhaust valve seat can be cut to the same level. The top of the valve stems need to be very close to the same height. Also those are the wrong valves fo...
by pmuller9
Thu Sep 26, 2019 7:16 pm
Forum: 240-300 "Big Block" Six Performance
Topic: webber 50mm on efi manifold
Replies: 3
Views: 198

Re: webber 50mm on efi manifold

sorry I meant 50 dcoe. two barrel side draft carb. Actually I'm sorry. 50mm Webers only come as twins. I don't know what I was thinking. LOL It would probably work. You would have to try one and see how it would respond to the EFI plenum. The EFI plenum was not designed for wet use. The 6 intake ru...
by pmuller9
Thu Sep 26, 2019 5:49 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Carter YF or YFA questions...
Replies: 7
Views: 330

Re: Carter YF or YFA questions...

The original air cleaner housing is too large for two mounted side by side. Are there any other smaller diameter factory type air cleaners [i.e. Mustang, Comet, Falcon, etc. with smaller six cylinder engnes] that might fit? Use a Mustang 21" oval air cleaner and cut the two holes for the carbu...
by pmuller9
Thu Sep 26, 2019 5:04 pm
Forum: 240-300 "Big Block" Six Performance
Topic: webber 50mm on efi manifold
Replies: 3
Views: 198

Re: webber 50mm on efi manifold

The 4.9 EFI engine uses twin 44mm throttle bodies.
A single 50mm Weber won't be large enough.

Also since the Weber side draft carbs are designed for Independent Runner application I'm not sure how they would respond sitting in front of a plenum.
by pmuller9
Thu Sep 26, 2019 3:51 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Engine is back
Replies: 81
Views: 3001

Re: Engine is back

How perfect is that?
Nice!
by pmuller9
Thu Sep 26, 2019 11:59 am
Forum: 240-300 "Big Block" Six Performance
Topic: Engine is back
Replies: 81
Views: 3001

Re: Engine is back

I've used Enginetech parts before without any problems.
They should work fine for what you are doing.
I would just lap them in after checking valve stem height.

This is assuming the valve length is the problem.
by pmuller9
Thu Sep 26, 2019 11:25 am
Forum: 240-300 "Big Block" Six Performance
Topic: Engine is back
Replies: 81
Views: 3001

Re: Engine is back

Yes
Those are the Stellite valves which stand up better to higher temps and unleaded fuels.
by pmuller9
Thu Sep 26, 2019 10:41 am
Forum: 240-300 "Big Block" Six Performance
Topic: Engine is back
Replies: 81
Views: 3001

Re: Engine is back

68Flareside240 wrote:Seems like it's always one step forward, two steps back with this thing.

Finding and fixing EXISTING problems is part of the rebuild process and is always a step forward.
Sometimes you have to do a certain amount of assembly to find them.
Keep up the good work!
by pmuller9
Thu Sep 26, 2019 9:16 am
Forum: 240-300 "Big Block" Six Performance
Topic: Fast Idle
Replies: 9
Views: 262

Re: Fast Idle

The carburetor may have a throttle kicker solenoid that activates when the engine coolant temperature is low or too high.
by pmuller9
Wed Sep 25, 2019 10:28 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Engine is back
Replies: 81
Views: 3001

Re: Engine is back

Take an intake valve and an exhaust valve out and measure the valve lengths.
Both should measure 4.810"
It looks like the later 4.750" long exhaust valves got mixed in with the early 4.810" intake valves.

Did any of the stock valves get replaced?
by pmuller9
Sun Sep 22, 2019 9:18 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Progress on the '56. Help decide on this motor!
Replies: 83
Views: 2573

Re: Progress on the '56. Help decide on this motor!

clintonvillian wrote:https://www.diyautotune.com/product/ign-1a-race-coil/

I've seen some guys run these on their 2.3 turbos with success. I was leaning towards these...

They should get the job done.
With those coils you can afford to run a little less than the max 3 ms dwell time to decrease temps.
by pmuller9
Sun Sep 22, 2019 8:01 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Progress on the '56. Help decide on this motor!
Replies: 83
Views: 2573

Re: Progress on the '56. Help decide on this motor!

Start at post 40.
Post 49 has more info on the cam sync sensor.
Later in the thread he switched from a VR to a Hall Effect sensor.
viewtopic.php?p=585872#p585872
by pmuller9
Fri Sep 20, 2019 9:13 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Progress on the '56. Help decide on this motor!
Replies: 83
Views: 2573

Re: Progress on the '56. Help decide on this motor!

clintonvillian wrote:What type of sensor does the unit on the right have???

I can't tell the part number from the picture.
Sensors came in both VR and Hall Effect.
Two terminal units are VR and Three terminal are Hall Effect.
by pmuller9
Thu Sep 19, 2019 9:30 am
Forum: 240-300 "Big Block" Six Performance
Topic: Progress on the '56. Help decide on this motor!
Replies: 83
Views: 2573

Re: Progress on the '56. Help decide on this motor!

The cam sync pulse signal happens only once in TWO crankshaft revolutions. It doesn't matter how many cylinders the engine has. You time the pulse signal by loosing up the clamp and turning the unit the same as if you were timing an ignition signal with a distributor. The Cam Sync signal tells the E...
by pmuller9
Tue Sep 17, 2019 5:47 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Engine is back
Replies: 81
Views: 3001

Re: Engine is back

68Flareside240 wrote:Dumb question I am sure, but I am in the process of ordering parts and need to know about valve locks. I am ordering the Comp 768-12 retainers. Should I order new lock or reuse my old ones? Are the comp 601-12 locks what I want?

Yes the Comp 601-12 are correct.
They are cheap enough. Get new locks.
by pmuller9
Tue Sep 17, 2019 9:09 am
Forum: 240-300 "Big Block" Six Performance
Topic: Edelbrock DP Modification
Replies: 24
Views: 1190

Re: Edelbrock DP Modification

If you mill out the red area you will not need the 1" open spacer.
by pmuller9
Mon Sep 16, 2019 9:49 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Custom intake manifold
Replies: 15
Views: 515

Re: Custom intake manifold

Blairsville Ed wrote:Has anyone tried this manifold with a single 2 barrel carb?

I haven't seen one with a single 2 barrel but the plenum has more volume than the stock log and the longer runners should give you much better power.
by pmuller9
Mon Sep 16, 2019 12:39 am
Forum: Turbo, Supercharger, and Nitrous
Topic: Yes, it's another turbo 300 thread.......
Replies: 14
Views: 355

Re: Yes, it's another turbo 300 thread.......

MechRick wrote:Ended up with 63 lb-hr high impedance units at 14.5 psi.

Is 14.5 psi a misprint?
by pmuller9
Sun Sep 15, 2019 9:57 pm
Forum: Turbo, Supercharger, and Nitrous
Topic: Yes, it's another turbo 300 thread.......
Replies: 14
Views: 355

Re: Yes, it's another turbo 300 thread.......

The Megasquirt-2 with a PCB3.0 will get the job done. Use their Ford 60 pin connector and breakout adapter to make an adapter cable so you can plug into the stock Ford harness Give yourself a little more margin on the injector size and run something around 24 lbs. Yes the turbo oil return pump will ...
by pmuller9
Sun Sep 15, 2019 9:21 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 240 & 300 head numbers
Replies: 6
Views: 317

Re: 240 & 300 head numbers

Image
by pmuller9
Sun Sep 15, 2019 9:06 am
Forum: 240-300 "Big Block" Six Performance
Topic: Custom intake manifold
Replies: 15
Views: 515

Re: Custom intake manifold

Link for previous post.
viewtopic.php?p=609777#p609777
by pmuller9
Sat Sep 14, 2019 9:19 pm
Forum: Turbo, Supercharger, and Nitrous
Topic: turbo 200 build
Replies: 163
Views: 25125

Re: turbo 200 build

This is where coating the headers with a thermal barrier would help a lot.
by pmuller9
Sat Sep 14, 2019 9:11 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Progress on the '56. Help decide on this motor!
Replies: 83
Views: 2573

Re: Progress on the '56. Help decide on this motor!

3" in and 3" out is sufficient.
by pmuller9
Sat Sep 14, 2019 8:56 pm
Forum: Turbo, Supercharger, and Nitrous
Topic: Yes, it's another turbo 300 thread.......
Replies: 14
Views: 355

Re: Yes, it's another turbo 300 thread.......

I was assuming that you were going to re-program the stock computer. If not this will not work. If you don't know much about MAP sensors, programming is beyond your present level of expertise. Going from the stock 14lb injectors to 19lbs at 59 lbs of fuel pressure will get you to 200 hp with a 90% d...
by pmuller9
Sat Sep 14, 2019 3:44 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Custom intake manifold
Replies: 15
Views: 515

Re: Custom intake manifold

Pmuller9, what are your thoughts on split plenum vs single? It depends on carburetor size. Two small carbs work with an open plenum so each cylinder can draw from both carbs. As the carburetors sizes increases the separation between plenums can be closed off as each carb becomes able to supply the ...
by pmuller9
Sat Sep 14, 2019 10:25 am
Forum: 240-300 "Big Block" Six Performance
Topic: Custom intake manifold
Replies: 15
Views: 515

Re: Custom intake manifold

You want long runners. The easiest way to make an intake is to use the EFI intake bottom half and weld up a bolt on plenum with a removable top plate. Use two carbs to get better distribution. https://www.dropbox.com/s/1lqenf6ztqv4yol/300%20lower%20intake.jpg?raw=1 Then go with the cam we discussed ...
by pmuller9
Sat Sep 14, 2019 9:33 am
Forum: Turbo, Supercharger, and Nitrous
Topic: Yes, it's another turbo 300 thread.......
Replies: 14
Views: 355

Re: Yes, it's another turbo 300 thread.......

The turbo size is perfect for what you want to do. The oil from the turbo must dump above the oil level in the oil pan and the routing from the turbo must be downhill all the way. If the turbo is below the oil line in the pan then a scavenging oil pump should be used. The ignition timing should be r...
by pmuller9
Fri Sep 13, 2019 9:08 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Rebuild
Replies: 56
Views: 2606

Re: 300 Rebuild

At the shop they are attempting to sell me what they are calling "UPS" pistons. These are apparently pistons that were made specifically for UPS by Silv-o-lite. They told me they have a specific shape which improves the squish area. All that sounds good enough, but $216 for six pistons is...

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