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Search found 1360 matches

by CNC-Dude
Fri Jun 19, 2009 12:41 pm
Forum: 240-300 "Big Block" Six Performance
Topic: shoulda used a Ford 300...dang
Replies: 19
Views: 3003

Re: shoulda used a Ford 300...dang

I believe they used billet 4 bolt main caps and a custom main girdle for the lower end. That is impressive how a 3 main engine could endure that much stress. I forgot how much boost they said the engine made, I'll have to go back to their website to refresh my memory, it shows the engine in various ...
by CNC-Dude
Fri Jun 19, 2009 11:46 am
Forum: 240-300 "Big Block" Six Performance
Topic: shoulda used a Ford 300...dang
Replies: 19
Views: 3003

Re: shoulda used a Ford 300...dang

I like 21st century technology applied to vintage engines in that way. They claimed on their website that the engine cranked out over 700HP ....that is very awesome!
by CNC-Dude
Fri Jun 19, 2009 12:59 am
Forum: 240-300 "Big Block" Six Performance
Topic: shoulda used a Ford 300...dang
Replies: 19
Views: 3003

Re: shoulda used a Ford 300...dang

StrangeRanger wrote:Bruce Crower is no armchair expert. He knows whereof he speaks and can translate it into hardware. I met him at Bonneville a few years back; he was working with a Flathead Ford powered streamliner trying to break 300 MPH. They did.

Was that Ron Main's Flatfire 'liner?
by CNC-Dude
Sat May 16, 2009 6:26 pm
Forum: The Falcon's Nest
Topic: CNCdude, I need your skillz....
Replies: 3
Views: 818

Re: CNCdude, I need your skillz....

Hello Falconaround. Sorry I haven't been on here much since the updated forum became available. Whats up. I sent you a PM also.
by CNC-Dude
Mon Apr 20, 2009 7:51 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Valve springs to match cam
Replies: 11
Views: 1486

Is it a hydraulic or solid/mechanical lift cam. A spring rate of 280 lbs. is too much for a hydraulic cam, and most solid lift cams as well. I think you need to double check your #'s again.... If you have a cam card, it will tell you everything you need to know for spring installed hgt. and valve la...
by CNC-Dude
Fri Apr 10, 2009 11:57 am
Forum: 144-250 "Small Block" Six Performance
Topic: Will race prepped factory forged rods handle 300hp and 6000?
Replies: 10
Views: 1419

20 pounds of boost will turn those rods into wiggly plastic looking toys. Ditto....its not the RPM or the HP level that would concern me as much as the boost level. Just look back at the photos of Does10s engine failure, and that might change your mind, he has now upgraded to some Manley steel rods...
by CNC-Dude
Sun Apr 05, 2009 10:59 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 6cyl. rod big end width???
Replies: 25
Views: 3923

I recommend the 240 rods with custom pin height pistons. I think your right, its a bolt in with no crank mods required, and I think that the bottom line, even with a custom piston needed, would still be cheaper than trying to go the SBC route. But it would allow an H-Beam or I-beam alternative, for...
by CNC-Dude
Sun Apr 05, 2009 10:50 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Dry film lubricant on the cam and cam gears
Replies: 10
Views: 1417

I wouldn't recommend coating a flat tappet style cam or lifters. All the Comp Eliminator engines I do, have the pistons and rod and main bearings, valves and valve springs and other similar pieces like that coated. Even though these engines dont use the traditional style cam bearings you will be usi...
by CNC-Dude
Sat Apr 04, 2009 7:00 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Non bushed full floating rods?
Replies: 13
Views: 1776

Dry film coatings are good for many applications, but they can't compensate for incompatable materials such as this application, I would recommend either press fitting the rods and pistons or float with a bushing. Cameljockey hit on a key issue, and that is durability and dependabilty, and floating ...
by CNC-Dude
Fri Apr 03, 2009 9:56 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Non bushed full floating rods?
Replies: 13
Views: 1776

Not to talk bad about your engine shop, but it seems to me he has given you some bad advice on more than one issue....IMHO! Steel on steel will gall almost immediately, they are not compatable wear surfaces regardless of how much clearance you put on them, and a bronze bushing is the only way to suc...
by CNC-Dude
Fri Apr 03, 2009 9:38 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 6cyl. rod big end width???
Replies: 25
Views: 3923

SBC rods are available in 6.200", 6.250", 6.300" and 6.350" lengths as standard + lengths for many manufacturers like Scat and Eagle and of course the better ones like Crower and Carillo also.
by CNC-Dude
Fri Apr 03, 2009 12:06 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 6cyl. rod big end width???
Replies: 25
Views: 3923

The B/E width on a 300 rod is .982 +/-, which at best will give you .040 side clearance. Just keep in mind the more side clearance, the more oil pressure bleed off you will have. Typically, .020 is pretty ideal for a race engine for side clearance with steel rods, i 've run aluminum rods with .040 b...
by CNC-Dude
Fri Mar 27, 2009 2:23 am
Forum: 144-250 "Small Block" Six Performance
Topic: full floating pins / bushed rods
Replies: 11
Views: 1240

Snap a spiral lock in and use the pliers to remove and you can carry a bag of spiral locks. I believe you are thinking of Tru-arcs, they are similar to snap rings, and require pliers to install/remove them. A spiro-loc is a very secure fitting retention device, that does just as its name implies. I...
by CNC-Dude
Wed Mar 25, 2009 9:11 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Machine Shop, torque plates, FL
Replies: 1
Views: 421

BHJ and Yother offer them. Definately recommended for any performance use whether its V8 or inline....
by CNC-Dude
Wed Mar 25, 2009 6:10 pm
Forum: 144-250 "Small Block" Six Performance
Topic: What size O-ring and how deep a groove?
Replies: 3
Views: 623

At only .021 deep with a .042 wire, the widest part of the wire is hardly inside the groove, if at all. Typical O-ring protusion above the deck is in the .008-.010 range with that size wire. It might be a good idea to take the gasket in case it needs to be "massaged" for clearance around any bolt ho...
by CNC-Dude
Sat Mar 21, 2009 11:26 pm
Forum: The Falcon's Nest
Topic: Looking for a Ranchero fiberglass tonneau cover
Replies: 3
Views: 1544

You can try Gaylord's, they offer them for most PU's and many different years of El Caminos....
by CNC-Dude
Thu Mar 19, 2009 12:02 am
Forum: Turbo, Supercharger, and Nitrous
Topic: O ring block for turbo application
Replies: 13
Views: 2156

With only 4 head bolts per cylinder, O-ringing a Ford is never overkill....you'll be glad you did!
by CNC-Dude
Sat Mar 07, 2009 9:41 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 I6 roller chain/timing gears
Replies: 4
Views: 1052

Some 6's have timing chains and gears, but the 300 and most Cheby 6's use a gear drive. Cams that use a (2) gear gear-drive rotate backwards from a chain drive camshaft, so if you are thinking of trying to morph something, take that into consideration when selecting a camshaft.
by CNC-Dude
Sat Mar 07, 2009 2:17 pm
Forum: Fuel Injection - Mega Squirt
Topic: Nitrous Question??
Replies: 21
Views: 3505

i wonder if the same principle would apply to a turbo or supercharged motor because the intake is already charged and will push as much air in as it can. but on the exhaust side a larger valve might help get the exhaust out faster. Those types of mods are actually done, a head that is going to be u...
by CNC-Dude
Fri Mar 06, 2009 11:58 am
Forum: 144-250 "Small Block" Six Performance
Topic: Porting the 200 head: Benefits, drawbacks, how-to, pics, etc
Replies: 20
Views: 2130

Would love to CNC it but I have two major problems: 1. I work on lathes only and 2. I work for a major defense contractor that frowns upon (read: fires) people bringing in their own work. As many links as can be provided would be great, plus I'm interested to hear what people think about this. Is i...
by CNC-Dude
Fri Mar 06, 2009 1:28 am
Forum: 144-250 "Small Block" Six Performance
Topic: Porting the 200 head: Benefits, drawbacks, how-to, pics, etc
Replies: 20
Views: 2130

There were some pics of a head that was sectioned so you could see how thick(or thin) the head is in some critical areas. I cant remember the title of the post, but it was pretty recent and I think it was in the small six section. Are you going to try to CNC it when nobody is looking(LOL).
by CNC-Dude
Thu Mar 05, 2009 11:43 am
Forum: 240-300 "Big Block" Six Performance
Topic: Torque plate honing on a 240/300 block?
Replies: 10
Views: 1592

There should be no shortage of FUBAR heads out there. Cutting (6) 4.10 diameter holes in one is hardly rocket science, nor is it even remotely precision work. The machine shop which is doing the machining for your rebuild would probably cut one for a nominal fee especially if you offer to let them ...
by CNC-Dude
Thu Mar 05, 2009 1:25 am
Forum: 240-300 "Big Block" Six Performance
Topic: Torque plate honing on a 240/300 block?
Replies: 10
Views: 1592

Raul, the washer idea won' t accurately simulate the cylinder head being torqued on the block, and could actually create a worse condition to the cylinders shape when the head is installed on the block. I know BHJ and Yother make torque plates for most popular engines,including the 300, and it might...
by CNC-Dude
Wed Mar 04, 2009 6:21 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Torque plate honing on a 240/300 block?
Replies: 10
Views: 1592

I've seen instances were people have actually used a damaged or cracked head, and machined the area out over the top of the cylinders so the hone will fit into the bores. Trying to use any other plate like a 351W wont be as effective, if at all.
by CNC-Dude
Sun Mar 01, 2009 9:22 pm
Forum: 144-250 "Small Block" Six Performance
Topic: hone ,, what grit?
Replies: 6
Views: 1004

Your welcome! You also can contact the ring manufacturer, they will be more than glad to give their recommendations for the ring type you are using and application your using it for....
by CNC-Dude
Sun Mar 01, 2009 5:37 pm
Forum: 144-250 "Small Block" Six Performance
Topic: hone ,, what grit?
Replies: 6
Views: 1004

Junk-Falcon wrote:im not running molly
The 525-625 grit is for a cast ring, the 820 is for moly and other exotic rings!
by CNC-Dude
Sun Mar 01, 2009 3:12 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Hypertech programmers?
Replies: 5
Views: 1170

Hypertech has the results of their programmers listed on their website. Even for the highest HP gains for the LS engines in Corvettes they only add right at 20 HP for those engines. I doubt for a 6 banger you would even get a proportional amount of increase. For the cost of around $350 bucks, I thin...
by CNC-Dude
Sun Mar 01, 2009 3:03 pm
Forum: 144-250 "Small Block" Six Performance
Topic: hone ,, what grit?
Replies: 6
Views: 1004

Those grits would be ok for roughing the bore, for finishing honing you need 525-625 grit, even for a stock rebuild ! Much more finer grits are used for racing applications....typically around 820!
by CNC-Dude
Tue Feb 24, 2009 1:49 am
Forum: 240-300 "Big Block" Six Performance
Topic: What happens if I run a 300 without a harmonic dampener?
Replies: 16
Views: 3123

What are you actually trying to install the engine in that is giving you this clearance issue!
by CNC-Dude
Tue Feb 24, 2009 1:47 am
Forum: 144-250 "Small Block" Six Performance
Topic: How do I get correct firinng order with the DUI
Replies: 7
Views: 1425

There's really an infinite number of spots you can get the distributor to fall into the engine with. Many people install them so they can have movement for timing settings so the vacuum advance will not interfere with the block or anything before the desired timing setting is reached. You can make a...
by CNC-Dude
Fri Feb 20, 2009 9:18 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Head Question
Replies: 26
Views: 2706

78stepside wrote:I see, so what is a good method of transfering runners size from one to the other? so they match up.
Since the limitation is in the intake manifold itself, that should be the standard that the head it made to fit. Port and shape the intake first, then make and match the head to it!
by CNC-Dude
Wed Feb 18, 2009 11:59 am
Forum: 144-250 "Small Block" Six Performance
Topic: Block decking
Replies: 5
Views: 1126

Many people incorrectly assume that even unmachined stock blocks and heads come from the factory with acceptable valve train geometry. When in fact, they have a +/- tolerance for manufacturing like all other components. So, any time you have to cut a block or head a considerable amount for a rebuild...
by CNC-Dude
Tue Feb 17, 2009 6:03 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Ford Drag Engine
Replies: 10
Views: 4083

CNC-Dude IIRC Sizemore's maverick was in the mid to low 11's,11.40's I think. In 78-79 is when he started running I/Gas the first car was one of Gliddens old pintos. I have a couple of pictures one being an engine shot, I'll see if I can post them or get a link. Ok, thanks. I also should have payed...
by CNC-Dude
Tue Feb 17, 2009 12:29 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Ford Drag Engine
Replies: 10
Views: 4083

There was a man from Alabama in the 70's that had probably the fastest H/MP 300 that there was. His name is Gary Isbell, and was one of my toughest competitors against our ChevyII. That magazine article never states what kind of ET or performance the Sizemore car had. But knowing there is a huge dif...
by CNC-Dude
Tue Feb 17, 2009 11:48 am
Forum: 240-300 "Big Block" Six Performance
Topic: What happens if I run a 300 without a harmonic dampener?
Replies: 16
Views: 3123

They really are vital to engine life expectancy, and other alternatives should be looked into for your clearance problems. Removing it completely should be at an extreme last resort. As FTF said it will break the crankshaft...NO ifs, ands or buts about it, regardless of RPM or how little you use or ...
by CNC-Dude
Tue Feb 17, 2009 11:33 am
Forum: 240-300 "Big Block" Six Performance
Topic: 300 head flow#
Replies: 54
Views: 9099

Someone in a recent post(just over the past weekend), finally found some guideplates that will work on the 300's. The Cheby six has pressed in rocker studs, and doesn't use guide plates!
by CNC-Dude
Tue Feb 17, 2009 2:28 am
Forum: Aussie Ford Sixes
Topic: How do you get HW5200 on the aussie head intake manifold?
Replies: 2
Views: 1050

Simple, plug the original 4 threaded holes with aluminum bolts, and redrill for desired carb! You can Lok-Tite the aluminum bolts in the holes, and with a hacksaw, cut them off close to flush with the mounting flange, and file them down the rest of the way until you can blend them with the carb sufa...
by CNC-Dude
Tue Feb 17, 2009 2:15 am
Forum: 144-250 "Small Block" Six Performance
Topic: What kind of horsepower can prepped stock rods support?
Replies: 4
Views: 890

Compression also! Its kind of a double edge sword. Like inliner said, its not the HP that gets you. But without RPM and high compression you don't make any HP....unless your boosted or nitrous! Most all Pontiac V8's used a cast rod all thru the 60's and 70's in their GTO's and TA's, some making over...
by CNC-Dude
Mon Feb 16, 2009 12:09 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 head flow#
Replies: 54
Views: 9099

well to update you all....i have two intake and two exhaust ports done. i have noticed that the casting is fairly bad. there are big over laps from where the top and bottom castings meet. also the gasket doesn't line up just right. like if i line up the gasket with bolts #1 exh. is off one way and ...
by CNC-Dude
Sun Feb 15, 2009 12:14 am
Forum: 240-300 "Big Block" Six Performance
Topic: needa list of rods with .975 pin
Replies: 2
Views: 531

The most likely source of interchange for you is going to be the SBC family. There are many aftermarket H-beam rods available for those engines, in a variety of lengths from 5.560"-6.350", the 300 rod length is 6.200"! The SBC rod journal size is 2.100" for their large journal V-8 engines, and 2.000...
by CNC-Dude
Sat Feb 14, 2009 11:25 pm
Forum: 240-300 "Big Block" Six Performance
Topic: What happens if I run a 300 without a harmonic dampener?
Replies: 16
Views: 3123

I've used a soild hub on 6's in drag racing applications with fair results. Don't know if that is your intention for use or not! Like powerjunkie said, some sort of a hub will need to be used to seal the timing cover....
by CNC-Dude
Sat Feb 14, 2009 1:48 am
Forum: 240-300 "Big Block" Six Performance
Topic: Rear Main Crank Repair Sleeve
Replies: 2
Views: 772

You didn't mention any machine work you might have done with your rebuild, did you by any chance have the block align honed!
by CNC-Dude
Thu Feb 12, 2009 12:10 pm
Forum: 240-300 "Big Block" Six Performance
Topic: WWYD - what would you do?
Replies: 32
Views: 3634

I think that you successfully fixed you rocker and lifter problems in the valvetrain area, and should turn your focus in an area that you know still has issues. The posts that im referring to are the one by Does10s, and his recent experiences. As for my experiences, I am a professional engine builde...
by CNC-Dude
Wed Feb 11, 2009 11:00 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 7/16 guide plates needed for BBC roller rocker conversion
Replies: 11
Views: 1895

80broncoman wrote:When I worked at Crane .
I know Chase Knight well.....small world!
by CNC-Dude
Wed Feb 11, 2009 10:29 pm
Forum: 240-300 "Big Block" Six Performance
Topic: WWYD - what would you do?
Replies: 32
Views: 3634

Well the piston skirts don't just mysteriously fall off the pistons for no reason. I guess what brought my attention to this post to begin with, was his failure to be alarmed with what he found in his oil pan, and his bewilderment as to why he still has a noise with half a piston laying in the oil p...
by CNC-Dude
Wed Feb 11, 2009 7:23 pm
Forum: 240-300 "Big Block" Six Performance
Topic: WWYD - what would you do?
Replies: 32
Views: 3634

Its possible that you had several problems causing the noise. The new lifters that were installed and other new components, probably cured the majority of the noises, leaving the broken skirt as being the only thing left that wasn't fixed, that you know is still broken and can make that sort of nois...
by CNC-Dude
Wed Feb 11, 2009 6:02 pm
Forum: 240-300 "Big Block" Six Performance
Topic: WWYD - what would you do?
Replies: 32
Views: 3634

Finding a piece of the piston skirt in the pan, should have turned on a light in your head. All the gunked up oil and other stuff was insignificant in comparison to that "find". Obviously it was making the noise before you attempted to tear into it, and find out what was making it. And now after you...
by CNC-Dude
Mon Feb 09, 2009 10:44 pm
Forum: 240-300 "Big Block" Six Performance
Topic: pic of 300 with 327 chevy pistons
Replies: 42
Views: 8856

Even though there probably isn't going to be anyone here that will attempt anything at the Comp level... Thanks for the offer. I visited a very successful Comp racer using the 240 head (who shall remain nameless) last month and my jaw dropped when I saw the lengths he was going to in his quest for ...
by CNC-Dude
Mon Feb 09, 2009 6:36 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Ported Head Flow#'s Updated (exhaust, large valves) EFI also
Replies: 38
Views: 11616

66 E100 Pickup wrote:it's a brave soul that would put those two seats so close together. John
That isn't that close, most race heads barely have enough room to put a dime on edge between the valves!
by CNC-Dude
Mon Feb 09, 2009 6:33 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Ported Head Flow#'s Updated (exhaust, large valves) EFI also
Replies: 38
Views: 11616

CJ455 wrote:Just talked to the wise man and he said that the 1.78 was way too big. .

Might be too large for a 240, but not a 300!

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