Bb70charger500
Well-Known Member
Wow I like the direction your going can't wait to see more
you had to buy a top end kit to get 705 h.p. out of a 472 hemi ? We made more than that back in the day w/ a 426 and street hemi heads ! " Will be kick a$$ tho ! "The Edelbrock top end kit for the 472 Hemi came in today! Lots of beautiful made in the USA high horsepower goodies! It is like Christmas in March!
My 472 Hemi is a Cummins built Mopar Performance crate engine circa 2005. It was rated at 525 horsepower. The actual dyno sheet that came with the engine showed 531 Hp. These engines were known to have issues,ranging from minor problems like mismatched parts ,to catastrophic failures. I have never ran the engine,but after seeing the issues a friend of mine had with the two he bought,both 472 engines,I decided that I would have an engine builder go through the engine and dyno it before I run it in a car. My friends first 472 Hemi had 528 head gaskets on it which caused coolant leaks,the rear main seal was installed backwards,and the rocker arm adjuster studs were over hardened causing three of them to break because they were brittle. After sorting out those issues,and clearancing the valve covers because the rocker arms were contacting them, this engine has been running fine. His second 472 Hemi,we decided to take in apart and check it for the issues that the first engine had,and everything seemed to be fine. After installing it in the car,it ran only a few hours before experincing catastrophic failure. The failure was caused by a batch of improperly hardened camshafts from Comp cams. This engine was sent back to Cummins and was completely rebuilt under warranty and has run fine ever since,seeing multiple Hot Rod power tours,street and track use. My engine was purchased right after this one,so I do not know if it has one of the improperly hardened Comp camshafts or not. My warranty is long over,so I had always planned on going through the engine before running it. I had planned on using this engine in my 70 Charger R/T SE until the stock car came along. Now that I am going to use the engine in the stock car,I figured that it would need about 750 HP to get the job done,so the Edelbrock top end kit and the Fitech fuel injection system should easily achieve those numbers. The dyno will tell the tale for sure. I had purchased an Indy mod man intake,and had them match a camshaft to go with that intake. I purchased a 426 Hemi disassembled short block last year from a friend of mine,so the plan is to rebuild the short block,and use the cast iron heads that came with the 472 Hemi,with the mod man intake,and cam from Indy,with the dual quad carbs,and install that engine in to my yellow 70 Charger R/T SE. So all the parts that I am replacing on the 472 will be used on the 426. I call that a win win!you had to buy a top end kit to get 705 h.p. out of a 472 hemi ? We made more than that back in the day w/ a 426 and street hemi heads ! " Will be kick a$$ tho ! "
All I can say is WOW !!My 472 Hemi is a Cummins built Mopar Performance crate engine circa 2005. It was rated at 525 horsepower. The actual dyno sheet that came with the engine showed 531 Hp. These engines were known to have issues,ranging from minor problems like mismatched parts ,to catastrophic failures. I have never ran the engine,but after seeing the issues a friend of mine had with the two he bought,both 472 engines,I decided that I would have an engine builder go through the engine and dyno it before I run it in a car. My friends first 472 Hemi had 528 head gaskets on it which caused coolant leaks,the rear main seal was installed backwards,and the rocker arm adjuster studs were over hardened causing three of them to break because they were brittle. After sorting out those issues,and clearancing the valve covers because the rocker arms were contacting them, this engine has been running fine. His second 472 Hemi,we decided to take in apart and check it for the issues that the first engine had,and everything seemed to be fine. After installing it in the car,it ran only a few hours before experincing catastrophic failure. The failure was caused by a batch of improperly hardened camshafts from Comp cams. This engine was sent back to Cummins and was completely rebuilt under warranty and has run fine ever since,seeing multiple Hot Rod power tours,street and track use. My engine was purchased right after this one,so I do not know if it has one of the improperly hardened Comp camshafts or not. My warranty is long over,so I had always planned on going through the engine before running it. I had planned on using this engine in my 70 Charger R/T SE until the stock car came along. Now that I am going to use the engine in the stock car,I figured that it would need about 750 HP to get the job done,so the Edelbrock top end kit and the Fitech fuel injection system should easily achieve those numbers. The dyno will tell the tale for sure. I had purchased an Indy mod man intake,and had them match a camshaft to go with that intake. I purchased a 426 Hemi disassembled short block last year from a friend of mine,so the plan is to rebuild the short block,and use the cast iron heads that came with the 472 Hemi,with the mod man intake,and cam from Indy,with the dual quad carbs,and install that engine in to my yellow 70 Charger R/T SE. So all the parts that I am replacing on the 472 will be used on the 426. I call that a win win!