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It's my understanding that a tighter LSA like a 110 moves the curve upward, I am scared to under a 112 LSA I want to shift my M6 at close to 6000 RPM with a 4.10 gear, No higher than 6200rpm for longevity reasons. I am leaning towards a 114 LSA and no more than 230@.050 duration, I want a FLAT, FAT power curve. I have a Hydra-Rev already and it does the same thing as an "R" lifter, prevents valve float on fast ramp rated roller cams. Is there any way to get the 400 RWHP figure on a 355 with ported stock heads and keep the low end torque? I know to keep the power peak lower in effect to lower the shift point, you have to ease up on duration and LSA ( 112/114 LSA no more than 230@.050 duration) But when you do that how much HP do you actually give up???
David

 

the larger the LSA (higher number), the wider the power band becomes. It also is generally slightly lower output than with tight LSA cams. The real determining factor on ECM combinations is if you can go closed loop. You really need to keep lsa in the 112+ range with something around 230 at .050" to accomplish that.

 

GS400TX----I just heard that car u posted and that thing sounds mean as hell....I would like to know what the specs are on that cam??

 

No one is going to be able to answer your question and say you loose 14hp or 29hp or whatever by going from a 230/242 cam to a 224/232 etc... unless the have been doing a lot of cam swapping and dynoing.


As far as can you get 400rwhp and nice torque on a 355, sure. Quite a few have done it. I did it with a 350, i know Will (Dr. Mudge) surpassed that. Just do a search in LT1 Tech there was a thread on this a few days ago.

And i'll move this to LT1 Tech...