Hi All,
I was originally hired by Ricardo Ind.to be contacted to Chrysler to develop the 5.7L hemi oil system back in the late 1990s. I designed the oil feed system to enable the variable cam timing system used on all current hemi engines and used on the Viper engines. I worked on the 6.1, 6.4, 8.4L engines before retiring in 2011. The last few years I was an Arrow Racing Engines employee contacted to Chrysler SRT Group to oversee the SRT Hemi engines.
The only difference between the 5.7 and the 6.1L oil pump is the oil pressure relief spring. The main difference between the 5.7 and the 6.1L engines is the bore, cam, head, and intake. Also exhaust manifolds. All are interchangeable. The 6.4 had an additional stroke change. The new Hellcat engine was being developed as I was getting out. The chief engineer and I had worked on the 5.7L and he was sending his people to me for input on how to build the supercharged 6.2L Hemi. I left before it was released but they did follow a lot of my advise: use the 6.4 block and the 6.1 crank to get additional piston head land thickness and deck height to lower compression.
I do own a slightly modified 2012 Challenger that is sleeping in the garage until spring.
I also own several GM products one of which has a 9 inch diff in it. So I am not partial.
Ron Krantz
ReK Racing
I was originally hired by Ricardo Ind.to be contacted to Chrysler to develop the 5.7L hemi oil system back in the late 1990s. I designed the oil feed system to enable the variable cam timing system used on all current hemi engines and used on the Viper engines. I worked on the 6.1, 6.4, 8.4L engines before retiring in 2011. The last few years I was an Arrow Racing Engines employee contacted to Chrysler SRT Group to oversee the SRT Hemi engines.
The only difference between the 5.7 and the 6.1L oil pump is the oil pressure relief spring. The main difference between the 5.7 and the 6.1L engines is the bore, cam, head, and intake. Also exhaust manifolds. All are interchangeable. The 6.4 had an additional stroke change. The new Hellcat engine was being developed as I was getting out. The chief engineer and I had worked on the 5.7L and he was sending his people to me for input on how to build the supercharged 6.2L Hemi. I left before it was released but they did follow a lot of my advise: use the 6.4 block and the 6.1 crank to get additional piston head land thickness and deck height to lower compression.
I do own a slightly modified 2012 Challenger that is sleeping in the garage until spring.
I also own several GM products one of which has a 9 inch diff in it. So I am not partial.
Ron Krantz
ReK Racing
