I kind of already have my mind made up but i would like to here others opinion to why i should choose a certain cam over another...

So the setup is going to be 59cc TFS 215, with a 0.040 gasket, 3/8" 3 piece pushrods, YT roller rockers, and flycut what is needed...should be right around 11.5:1 CR...

What cams work the best well with these heads, high top end screamers (polluter) or more mid range to top end like a 236/240 streetsweeper...this is 90% track car...

List what cam and why...

 

You cant go wrong with the Vindicator and TFS 215's. A solid and proven combo.

 

90% race car = trex or vindicator
90% street car= 228r 03 230s cam

 

Reverse split...

Torque wins races.

230/226 from Lloyd Elliott...

With those heads, I would say that motor would be in the 450+whp range.

 

i'd look at a 236/240 streetsweeper range. i don't think your cam choice will make a ton of difference when you're talking those heads and 240* duration. i think the differences between off the shelf and custom would be small.

why the yt rockers?

any plans on going with a bigger stall?

 

It is recommended to run an aftermarket rocker with the TFS heads.

 

well pretty much seems like all the roller rockers break at one time or another and the YT's seems to have a decent track record...and the fact that i got them with the heads as a package deal, so i was debating on selling them and just running upgraded trunion stockers but i think i am going to just throw them on for now...

why street sweeper over say a 242/246 cam? seem like there will be some hp left on the table?

 

goals are higher than 450 although my new 12 bolt and 4.10 gear might not be as friendly on the dyno...

i want 10.teens at around 130-131mph with amazing air being an A4...

that cam is not what i am looking for considering it is smaller than the one i have now 230/230

 

i vote TREX seeems to be the common big cam for these types of builds.

 

yeah trex is good but i think there should be some better grinds out now, i mean look how many build are now breaking 500rwhp...

although i do like the g5x4 and it is just as old...

 

Something with 8* of split, 113-114 LSA, traditional split on the duration, and reverse split on the lift. Basically what I'm running now, it's docile, has a broad powerband.

 

i dont want docile, i want a track car cam...this is no longer my daily driver...and wondering why such a high lsa?

 

I was going to say either the TREX or G5X4 but couldn't remember if it was the X4 or X3 haha. Nothing wrong with proven cams if you ask me. Everyone going custom cams now a days and most 500 rwhp cars i've seen were built for dyno not track. Goodluck though that was just my .02, btw always loved your builds and track numbers, they give inspiration haha.

 

Well chris looks like Everyone is still being real hush... hush...

And We are not just looking to make the dyno queen#'s We are at the track almost every weekend in the summer with his car or mine. We are both looking into the best cam and heads for are cars.

I say G5x4 or polluter and the polluter cuz i have not heard anything about it in a track H/C/I car so it's a under dog haha till proven......

 

Well theres lots of fast track cars running MS4s. Just look at the success TSP has had with their Camaro. Although it does have different heads it is still the fastest stock bottom end car in the country.

 

The Trick Flow 215s are pretty easy to cam because they don't have stupid flow right off the seat (like L92 heads) so you can throw lots of overlap at it or a little...either way, the heads will perform. Since this is going to be a track car, you will be turning more rpm than the typical street setup. A larger split between intake and exhaust duration (when done properly), can give you a broader power curve at higher rpm.

A reverse split cam is definitely NOT what you want to do with a track car turning higher rpm. But like I said, the TFS 215s are a very forgiving head. You could put a 240/236 or a 236/240 and not see a dramatic difference in performance. But since you're after the maximum power under the curve, you might as well do it right. Personally, for this setup, I'd try to keep the intake valve closing point between 46-47 degrees ABDC at .050", an exhaust valve opening between 56-59 degrees BBDC at .050", keep the overlap between 15-21 degrees at .050" plus get a rpm-friendly high lift lobe (like the newer LSL lobes from Comp).

Here's a range where you can't go wrong:
235/243 .624/.624 112LSA +3 (15 degrees of overlap)
239/243 .624/.624 111LSA +4 (19 degrees of overlap)
239/247 .624/.624 111LSA +4 (21 degrees of overlap)

Either find a shelf cam in these ranges or build your own custom. Get it somewhere close to the above cams and you'll go plenty fast.

 

I gave you my 2c in PM

 

thanks for the post, how can i pick a lobe/duration and know the valve events, i would like to take your advice but do not know where to find the valve events...also do you have a link for comps site that lists the new lobes i tried looking and could only find X-ER, XFI...

also with the three cams listed will the largest overlap give the most power, also will be the hardest to tune too correct?

what happens if the IVC point is higher than 46-47*...what does that do in theory?

just wondering why you picked those points and what it does when you go to either side of them...thanks a ton

 

HAHAHA RS!


what intake? trans/convter?

fast/4K 10" x5/trex type. Butt, single plane/ 8" 5,500. go big! 25xs .64x tight... 106-108 LSa

your gona need a bigger tire

 

you'll get the most power out of a good combo, not just the largest cam. not to mention you have a ... 4k stall i think? i'd like to think that would limit your cam choices to something sub 240* if you wish to maintain the 60 and 330. neither of the 240/244 cams, vindicator, polluter, or x4 for that matter, seem to impress me. it is the slightly smaller cams that perform as well or better than the humongoid cams. if you're wanting a nasty *** cam, call joe from 6speedinc and ask him to get the 244/250 cam he had in his car when it was cam only. i'd guess you'll be wanting a 4500+ stall at that point, though.

also, consider the extra valvetrain weight with the yt rockers vs worked over stockers. if you're going to be shifting 7200+ the added weight is not your friend.