Mike says that since the Victor intake runners are actually smaller than the ports in the heads, the engine will run more efficiently since this port mismatch will help keep reversion pulses away from the carburetor and plenum area of the intake. There's no doubt this is a stout big-block for its size, and will certainly power Eric's Dodge truck to some impressive pulls.After dyno tuning the engine, it has been installed in the pulling truck and initial testing has shown positive results.
Dylan McCool 40,234 views.
If you are looking to replicate this build but have a little more money to spend, consider a rocker-arm upgrade. None of the random guesses from the peanut gallery crowding around IMM's dyno cell were this high. There were no exotic Hemi parts in this engine, and no black-magic porting was done to the cylinder heads or intake manifold. Actually, with 731 horsepower and 625 lb-ft of torque, we think this MRL Performance prepped 470 would be fun no matter what type of Mopar it was installed in!
Otherwise, this is an engine you could drop into a classic Mopar and surprise a few people with the power you're getting from what was never really considered to be a performance engine. Chrysler is a family brand of sedans & minivans. Remember that when it comes to Mopars, cars aren't the only way to have fun. The heat valve in the right exhaust manifold diverted hot gases to the floor of the intake manifold which helps to vaporize the fuel mixture when the engine is cold, speeding warm-up; a thermostatic spring reduced gas flow through the intake manifold crossover passage. These vehicles are designed to pull a weighted sled along a dirt course, with an ever increasing load being applied to the engine and drivetrain. There may actually be a few more ponies lurking inside this engine, but Brian didn't feel comfortable pushing the engine too much farther. *Note: These are IMM's prices. After a little break in time, Mike made a short pull on the engine to load the engine and help seat the rings. MRL chose a Jesel belt drive for this engine, stating that the belt drive will reduce harmonics transferred from the crankshaft to the cam, and allow easy cam timing adjustments without having to go inside the engine. Brian and his dad were hoping for about 415 hp, but everyone else guessed lower than that.
IMM built a Chrysler B-series 400 that looks like a basic 383 but makes Hemi power numbers on a Pabst Blue Ribbon budget. Your local machine shop's costs will vary. MRL decided to use a factory Chrysler 400 block for this build, stating that the 400's shorter cylinders and beefy bottom end are ideal for durability and power, and that these blocks work great in moderately powered applications without spending the cash for an aftermarket block.
Mopar fans, start scrounging eBay or your local swap meets and salvage yards. Of course the entire assembly was balanced and the cylinders were treated to Total Seal dry film lube to aid in ring seating during engine break-in.Since the class requirements dictated a cast-iron cylinder head, Mike had to decide whether to use factory castings, or go with an aftermarket head. Instead, Mike chose a pair of 440-C cylinder heads from Indy Cylinder Head, which are a cast-iron head with similar characteristics to Indy's 440-1 aluminum cylinder head. Finden Sie viele günstige Auto Angebote bei mobile.de – Deutschlands größtem Fahrzeugmarkt MRL states that Mahle pistons are excellent in terms of weight and strength, come with a metric ring pack, and are fully coated.
Using a Milodon deep-sump truck oil pan, MRL blocked off the internal oil pickup, and utilized an external pickup in the pan along with a Milodon high-volume oil pump and cover. Build and price yours today. There are a lot of ways to have fun with your Mopar, including driving on the street, attending car shows, or racing at the dragstrip, but to some enthusiasts, trucks are the Mopars of choice.