Originally Posted by
stockcar5
Purchased a late model a couple of weeks ago. It's a 2012 mb custom with 2016 updates. Looking to build a motor for it. Right now I'm thinking along the lines of a 3.5 stroke 360 and looking to use a posted profiler head. Hoping to make 550-600hp. Motor will have roller cam, shaft rockers ect. What are your thoughts?
No rev limiter and tire is a d55, no grooving or siping allowed. All cars run an 8 inch spolier.
Motor I'd like to build would fall under option F
OPTION A: 602,604 GM crate Motors, 2200 lbs weight minimum
OPTION B: GM ct525 minimum weight 2300 lbs minimum
OPTION C: Complete IMCA Spec Motor rule weight 2300 lbs
OPTION D: 364 or smaller all steel engine with compression ratio 11 to 1 or less must weigh 2325 lbs
OPTION E: 364 or smaller all steel engine with compression ratio greater than 11 to 1 must weigh 2375 lbs
OPTION F: Chevrolet Motors under 364 cu inch motors with standard valve angle(23 degree) ported steel or aluminum heads must weigh 2375 lbs
OPTION G: Wisota Spec motor must weigh 2375 lbs
OPTION H: Chevrolet Motors 365 cu inch through 410 cu inches motors with standard valve angle ported steel or aluminum heads must weigh 2450 lbs and 1 1/8 restrictor.
OPTION I: 411 cu inches or greater with steel or aluminum heads must weigh 2450 lbs and 1 inch restrictor. (unrestricted valve angle)
OPTION J: Open aluminum or steel motors with unrestricted valve angle 365 cubic inch or less must weigh 2350 lbs with 1.250 restrictor.
OPTION K: STEEL BLOCK ONLY: Chevrolet motors over 364 cu in with standard valve angle plus or minus 2 degrees of standard ported steel or aluminum heads. Must weigh 2350 lbs with (4 ea) 1.100 restrictors. (SLMR section 12 item 6) approved by CC 4-2-18
1. Aluminum Blocks must add 50 lbs in front of motor plate.