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Summit 'Brand-X' Hydraulic Camshafts for Mopars SUM-1789 ...... Small Block ......... .454" ~ 272* ..................... $101.97 SUM-6900 ...... Small Block ......... .421"/424" ~ 278*/288* ...... $71.97 SUM-6901 ...... Small Block ......... .441" ~ 276*/288* .............. $71.97 SUM-1798...

Summit Camshafts Never hurt anyone in the Pocket Book. Simply Put ........... One Durable Bump-Stick for a Street-Performer.

Edelbrock LD-4B and Weiand 'Stealth' #8022 About as close as 'Two Peas In The Pod' can be.

That would be correct. A mill/cut of .0043" = 1 CC 10 CC's =.043" 9 CC's = .039"

I believe the NHRA specs for the '1972' 340 are the following. Piston Height ........................ -.054" {Below Deck} Gasket Thickness ................... .036" Cylinder Head {#3418915} ..... 64.7 CC's {Combustion Chamber} Net Compression ................... 9.32 to 1

'1972' 340/240 HP Factory Specifications Piston Type ................. Flat-Top w/Notches Piston Height .............. .054" {Below Deck} Head Gasket ............... .036" {Thickness} Cylinder Head .............. #3418915 Valve Size .................... 1.88" Intake ~ 1.60" Exhaust Combustion...

Mopar Like to tease you with these Magazine Ads with 'advertised specs'. http://img.auctiva.com/imgdata/1/0/4/3/2/5/3/webimg/513650195_o.jpg

Brush Research Flex-Hone {GB Flex-Hone} Telephone # 323-261-2193

Now, you're starting to look more like a Machinist with the Micrometer, than a Garage Mechanic with the Calipers. Don't ever make that mistake again.

Well Then, I guess I'll just have to throw out my 'Browne and Sharpe' Micrometer Set. Those Bastards never told me I could use a Dial-Caliper to measure Piston's and Cylinder Bore Holes. $2000 'Down-the-Drain'

Piston Knurling Old-school Machine Shop trick. Popular in the late-1950's and 1960's. The Piston Knurling Device massaged the metal outward, and helped create an {approximately +.005"} over-sized Piston. Also, the grooves knurled into the Piston-skirt helped retain some oil for improved...

I Take It, That You're Looking For A 'Temporary' Quick-Fix It can be done. The Cylinders {though most likely out-of-round} can be 'Flash-Honed" to create a seating finish for 'soft' Oil-Rings. Next step, get a set of 'Sealed-Power' Quick-Seating Cast Iron Rings {+.005"} over-size. It...

Tool-Man-Mike Here you go.

T~M~M, I have those specs posted on the Small Block Cylinder Head spec thread. I'll bring it up.

#4323302 Cylinder Heads Casting Years .............. 1985 thru 1988 Application .................. 318/140 HP ~ 2-Barrel .................................. 318/175 HP ~ 4-Barrel 'High Swirl' Combustion Chamber {Heart-Shaped design} Factory CC Level ............. 63.5 {Average} Minimum CC...

The 57 CC is 'the minimum' based upon NHRA specs. Not what the Cylinder Head Combustion Chamber CC'd out at the factory.

Start from the Base to determine the culprit. Possible Culprit ....... Rear End and 18" Wheels. #1 ....... What is the Tire Diameter ?

T-M-R My Father tested a bunch of them back in 1967 on a Bear Chassis Dyno for Mopar {Northeast Region}. He said that he never got a 'factory stock' 273/235 HP to get over 220 Horsepower.

Tool-Man-Mike Did anybody ever post what the Horsepower and Torque gain was with the Isky E-4 over a 'stock' 273/235 HP Camshaft. Back-in-the-Day, we dyno'd more than few stock '273 Commando' and 'Charger 273' engines. On the chassis dyno {adjusted to Flywheel HP} they were in the range of...

T-M-M, We are going to dial it, to see if the specs are what is/was advertised. The 'Lift' was found to be slightly more, measuring at .429" to .430" ...... :cheers:

Isky E-4 I just picked an old 'Isky E-4' Bumpstick, still in the box. The lift {measured on a V-Block} came to .430" I guess I got a 'good one'...........:burnout:

Sounds like you probably have the Edelbrock #7276 Intake Manifold Gaskets with the 1.17" x 2.30" Port Size. Go with the Fel-Pro #1243, which have the 1.05" x 2.08" Port Size. The Fel-Pro units are designed for the smaller port Cylinder Heads, and have a better coolant port gasket-match...

There 'two' different methods for dealing with Mains in an Engine Block. * Line Honing * Line Boring On the Automotive Engines, Line Honing is the 'typical' method to use. On Diesel Engines, the only method to use is Line Boring. Line Honing {ie; Sunnen Line Honing} the stone-mandrel will...

1964 Oldsmobile F-85 Year ..... 1972 We stuck a Pontiac 421 'Tri-Power' in the Olds from a wrecked 1966 Pontiac 2+2, with an Automatic Transmission Installed a set of 3.90 Gears in the Oldsmobile Rear, with an 'Anti-Spin' set up. We were able to 'finagle' a set of Headers on the car. How, I...

* Crankshaft * Rocker Arms * Dual-Point Distributor * Intake * Carter AFB The Lightweight "thin' Full-Floating Connecting Rods were actually not bad for screaming.

Correct Sir I should have stated that with the 1968 and 1969 {Open Chamber 60.5 CC} Cylinder Head was to be used with the .020" Thin-Steel Head Gasket. The 1967 and earlier {Closed Chamber 57.5 CC} Cylinder Head must be used with a .039" Thick Head Gasket. Changing the Net Compression down to...

'Remember the Trick' Reversing the Pistons, for less friction. Was supposed to be worth an easy +10 HP.

They were produced at one time. 'Forged-True' made them as a Super-Lite Race Piston. Flat-Top ~ Zero Deck Compression Ratio w/.020" Thin-Steel Head Gasket * 57.5 CC Cylinder Heads ........ 10.1-1 * 60.5 CC Cylinder Heads ......... 9.7-1 If you wanted Valve-Reliefs 'fly-cut' in the Piston...

The 273 with low-compression pistons will be a ........'bone'.

Or on Water, But, if South of the Equator, you can run in 'double-reverse' rotation.