To the OP you have a very legitimate question and we have a lot of customers ask this question. Since you decided on a 4.0L we can give you an example of what our newest build is:
Bullitt5897's 4.0L closed deck motor
Bryant racing billet 4.0L crank
LA Sleeves
Carillo rods
CP 96mm pistons
Race bearings
Oil pump gear upgrade
Now here is the explanation of the parts and why:
Bryant racing cranks are the absolute best cranks on the market! Perfectly balanced and bulletproof!
LA Sleeves are also another point of strength. Coupled with a closed deck collar the sleeves give the cylinder the rigidity it needs for high boost applications.
Carrillo rods and cp Pistons are the best in the industry and you just can't beat them.
The upgraded oil pump gears are crucial to the longevity of the oiling system and will ensure the oil pump stays pumping up to super high rpms!
So OP to answer your question:
We would recommend closed deck blocks for all of our customers. They work very well and many of our new high horsepower clients are making the switch. Sleeving the cylinders will make sure that your cylinders can take a beating in the worse case scenarios and still have a salvageable motor. For anyone pushing the limits we recommend sleeving the motors. Sleeves cost about $600 and is a great insurance policy to save your block.
If you would like a personal quote or just want a more personal answer based on your build send us a pm and we will be more than happy to guide you in the right direction so that you only have to do this once.
- The RJ MFG team
Last edited by Trips; 07-23-2016 at 07:36 PM.
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