hey guys. i am looking to go forced induction before summer comes. for now i want to just run cam only though. which cam would work best for a turbo setup? i am going with a single 76mm turbo kit. the most i want out of the car will be 650rwhp, of course once the motor is forged. my mods are in my sig, which would work best do you think? thanx.

 

224/224 .585/.585 116 is a good start.

 

the higher the lsa the better for forced induction, right? or is not always the case?

 

LSA is not what affects the bleeding of boost, overlap is.

The general consenus is that you want a wider LSA so you dont bleed boost off, but remember boost is not an indicator of power, airflow is. I think that you should just buy the cam with the street manners that you prefer, then strap on your blower. You can always up the boost with a new pulley or different wastegate settings if you want that set amount of PSI. Simply put, a big cam @ 10 PSI can yield more power than a stocklike cam @ 15 PSI, its all about airflow. Why, because the bigger cam can push more air through than the smaller cam. Also keep in mind that a bigger cam will bring your compression down more too, which is good for boost to prevent detonation.

This has been debated a good deal around here already.

 

so i can go with a cam like the ms3 or the trex and still make good numbers on boost? im not quite sure im following completely as to you saying the bigger cam is better for boost.

 

Sure you can still make great numbers, and you can choose your powerband based on the cam you go with.

With a cam like those you will bleed a lot of boost out from the cams overlap, so you will have to spin your turbo faster to make the same amount of boost that you may have been making with a stock cam because the stock cam does not bleed boost because it has very little overlap.

Most people with FI like it because of the streetability since you dont really need a big cam to make good numbers, you just turn up the boost, thats why most go with a timid cam.

 

okay, gotcha. so what would you recommend to be a well known cam for a turbo setup? i heard the 228R cam was pretty good, i cant remember the specs off the top of my head. i think 228/232 .588/.588 on a 114 lsa.

 

the 228 is a good blower cam, the lingenfelter cam is a very well known blower cam as is the Cheater cam. You can use the DCR calculator to see what a certain cams characteristics will be, such as overlap and dynamic compression.

 

where is the DCR calculator? do you have a link to it?

 

https://ls1tech.com/forums/generation-iii-internal-engine/630637-my-dcr-calculator-if-you-have-comp-grind-doesn-t-get-any-easier-than.html

 

thanx man. im starting to understand it alil better.

 

look at EPP's cam that they have for forced induction STS camaro on their site. It is a monster but works great for FI.

 

thanx for the help man. im gonna give the specs to my installer and see whats next. from what EPP says, its been a great cam for all of their customers turbo builds. i guess we'll see.

 

hey guys. just talked to the installer and he was saying that with me having a stock bottom end, that cam from EPP might be too much. what would you think?

 

What are the specs on the cam?

 

The spec's are 232/240 at .050 .595/.608 lift with a 115 lope separation. thats off EPP's website.

 

Then do a single pattern 224 type of cam.

I'm running a single pattern 234 cam.

 

by single pattern u mean 224/224, right? with like a .588/.588 lift i guess

 

yes, 224/224 or 228/228 are single patterns

 

lastl1, check this out
http://www.mx6.com/forums/showthread.php?t=135425