Quote:
Originally Posted by freemaSSon
115 +3 is my first instinct but 115 +2 will be OK as well.
My personal preference is always a 115 LSA with 112 ICL (115 +3). Those duration specs will have 3 degrees of positive overlap and build great dynamic compression but not too much. It will have manageable reversion and be a snap to tune. It will make super power on Nitrous and would be a great centrifugal blower cam as well.
It will not be the BEST of any one area but a fantastic performer for any. Those specs give you lost of future options. My first thoughts on specs are POWER, DRIVEABILITY, VERSATILITY and TUNEABILITY in that order. Your specs are PERFECT considered in that order. Those specs are a 40-45 HP cam that sounds NASTY as hell, drives damn near stock with ZERO BUCKING and be easy to tune. How does it get any better, IMHO!
I could see the 115 +3 with as near to those specs on a XFI lobe and 150 shot of DRY NITROUS at the filter making a SHIT LOAD of TQ.
The +3 degrees of overlap will have a GREAT idle chop but be a BREEZE to tune!
CAVEAT! You spoke of waiting on headers, be advised that the lack of headers will sacrifice what this cam can offer. You are CHOKING this cam until you add headers and high flow cats.
Unless you have a place to grind this cam I still HIGHLY recommend you contact Trevor at TxSpeed for his final input and have it ground as a comp grind through TxSpeed. Trevor may have some input related to the exhaust to intake flow percentage with the LS3 head. He is one of the LSx Gen’s greatest cam wizards. You will learn LOADS with his input I promise. Once you hash out the final specs then TxSpeed can grind the cam at an AMAZINGLY competitive price.
I hope this helps. I am a student to the grind theories and even have a few of my own. Your 1st instinct are in perfect alignment with my preferences and thoughts. I grew up in the dirt world in Sprints and Modifieds. Been involved in quite a bit of cam selection choices there. The exahust to intake flow percentage on the LS3 requires some considerations unique to itself and Trevor has done some crazy ass grinds that seem silly untill it is tuned out and then it's like HOLY MOTHER OF GOD that rocks!
ENJOY BROTHER! I pray this helps.
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Thank you again .
I did change the cam specs per your recommendation .
My experience is with big block marine engines and I always run 260s cam 108 lc or upper 270s on the higher rev motors with the wider lc and always conservative lift for endurance .
My brother who has some LS1/2 experience was against the 117 cam as were a few others .
I bought the cam kit from Thunder in La. . I was anxious to start modding the Camaro . They were accessible plus their recommendations and logic were consistent with my previous experience .
I know a lot of guys are busy with big $ builds or tired of dealing with tire kickers and I can relate .
I really appreciate you freely sharing your experience and knowledge , I had already commited to Thunder and would never pull the deal from them after giving the order .
I'm going to dyno the cam and modded air intake only LS3 and post results . From there I'll contact you @ ADM when I'm ready for the next upgrade .
Again , Thanks .