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There are lots of ICON pistons available for the 4" stroke crank with a compression height of 1.445" in most variations except for the dome pistons that come with a 1.465", but they are all made with the .984" pins. Using a 1.445" compression height piston would be great with a 6.250" rod IF you...

If go-fish has a 2.100" rod journal 3.79" stroke crank then he can't get a 6.123" rod with a .984" pin, so the BRC pistons are of no use to you unless you can rework a set of rods, or just buy a set of pistons that have a .927" pin. Tom

You had previously mentioned about buying that set of BRC pistons that are listed in the for sale section. Those use a 6.123" x .984" rod with a 3.79" stroke crank. That set of pistons are about half price of what any new set cost today. Tom

Connecting rods are bushed. It's just not cost effective to push out a bushing, bore the hole oversize, re-install a bushing, bore, and hone for .002" difference in rod length. You are not going gain anything by increasing the rod length from a stock 6.123" to a 6.125". Sell the Scat rods and...

The OEM has had machines for over a 100-years built specifically for machining blocks at a fast rate. When you make a million of them a year you can afford to have custom built machines that get it on. Henry Ford had an Ingersoll milling machine in 1912 that could machine multiple blocks at a...

10-12 hours of machining to take a raw casting to retail. I am going to guess that those machines are in the $250 an hour range, so that's $2500 to $3000 worth of machine work. This will help explain why a new block cost so much. Tom

That's on there so they know they have the data acquisition system turned on. They flip a switch at the back to turn it on. Not turning it on just wastes a run because you have no data to work with for the next run. Tom

You can find out everything you need to know and have access to anything you need here. Dzus Fasteners Tom

Using a 4.25" stroke crankshaft in a 400 block is really all the stroke you can, or should put in a 400 block. You just run out of available compression height for the piston with any more stroke at a 9.800 deck height. With a 4.375" bore that will yield 511 cubic inches. I don't know why...

221-302 are 8.2", not 9.2" Tom

Now might be the time to buy a single stage belt driven oil pump. Eliminates a lot of issues. Tom

OEM 351 Windsor block is 9.500" That is incorrect. OEM 351 Cleveland block has a 9.200" deck height OEM 351 Windsor bock has a 9.500" deck height However the hot setup is buying an aftermarket Windsor block with the 9.20" deck height and 302 mains if you want to race. Tom

Everytime an NHRA Pro Stock engine had the deck height lowered a .100" they picked up 15 HP. Now Pro Stock deck heights are down to as low as 8.600" It's not a secret that lower deck heights allow for more horsepower to be made. Tom

A normally aspirated engine will always prefer a bigger bore to allow larger valves to move more air. Higher rpm racing engine you would want way over square 4.375" bore x 3.91" stroke. Heads up you're going to need it still pulling at 7500 rpms without running out of head. Depending on the...

I use Lucas or Amsoil Red Grease, so they don't require checking but twice a year and rarely require more than one or two pumps if that. Tom

I absolutely wouldn't spend the time and money to upgrade them. Even if you gained 10 HP and I really doubt that. You'll end up losing TQ in the RPM range. FYI: I have 1-7/8" headers on a very well built 499 RB and that's all the header that engine needs. Tom

In Milan you can buy gas at the track. Dirty Harry's Performance Shop - Milan Dragway Tom

The track in Bradenton is way out in the country east of Bradenton. They were clearing land across the highway, north of the track when I was at the race in February. They're also taking Orange Groves out all over down there too for housing developments. Hopefully a few tracks will still be...

You have to change a product 10% to not be infringing on a patent. However the knock offs don't even care about that. Tom

If you lift the gas pedal or let go of the shifter handle on a Clutchless Liberty transmission it falls out of gear. Tom

Indianapolis Raceway Park was supposed to open this weekend and the cold and rain did it in until next weekend. Tom

Got the plenum bead blasted today and tomorrow I should have the powder coating done. Need to get this one finished, so I can start another one for the Birdcatcher project. Tom

Block off plates made and installed today covering the machined surfaces. There is no point in filling the inside with trash and dust. Hoping to get it bead blasted tomorrow and call it done. Tom

Compression ratio is the volume of the cylinder sweep divided by the volume of the cylinder head. Nothing more to it. For what is worth I would never use a an .080" thick head gasket on an engine unless your running a Top Alcohol (Blown) class (which they do). Easiest way to figure compression...

The math is: Bore x Bore, or Bore Squared 4.28" x 4.28" = 18.3184" x 4.375" stroke = 80.143" x 3.14159265359 (Pi) = 251.77666 x2 = 503.55" Or in the case of using a 4.50" stroke crankshaft it would be: Bore x Bore, or Bore Squared 4.28" x 4.28" = 18.3184" x 4.50" stroke = 82.4328" x...

The cost of all big block kits are the same regardless of size. I posted the 541" kit as an example of what is included in my kits. I actually just looked into building a kit with a 4.28" bore, however the available pistons are not going to work with a 4.375" stroke. Below is what I've come...

That's actually 503.55", not 505.55" Tom

Then you still have to add the cost balancing, bearings, shipping, and sales tax. My kit is $3335.79 complete for any cubic inch size big block up to 541", and you get a Molnar Technologies crankshaft and connecting rods, ICON pistons, and King XP bearings. [FOR SALE] - 541" Molnar...

The filing of the weld has finally been completed. I might have to do a small touch up here or there, and still have some sanding to do before it's ready for glass beading. Went ahead and removed the Mopar logo and the part number (something I always strip off of every intake I use) and...

It's going to do some back to back testing when the time comes. I am also getting ready to cut another top right under the carb pads and weld a plate on that will accommodate an Enderle Birdcatcher. Tom