OJmobileII

iTrader: (3)

trying to replace and add things before i drop the LS1/T56 in my RX7. alot easier to do it w/ the engine out.

2900 w/o driver, 4.10 rear, IRS, 25% underdrive, hv hp oil pump, unported 243s, dual valve springs, shorties, catted 2.5in dual exhaust, drag radials...

it seems like alot of stock engine people r "overcamming" w/ MS3/4 or T-Rex and seeing great peak numbers and good 1/4 mi times. other people have tailored their "baby" cams and have been getting good 1/4 mi times w/ a more broad powerband.

would it be better to go big on a light car that will never see a slick or traction?

Studytime

iTrader: (15)

I would pick a smaller sized cam that came in sooner. It'll be more fun to drive all the time. I've had luck street racing with tall gears and more topend power (as to not smoke the tires at the line), but it's only fun then and from a roll.

You also have shorty headers. So I wouldn't suggest a cam with a lot of overlap for you.

I'd say pick something that sounds mean at idle (makes people know you have a V8 RX7) but not overly aggressive- something that will give you a broad power band too.

Ben T.

OJmobileII

iTrader: (3)

thanks Ben. to be honest i am kinda leaning towards a big cam. the shorties and overlap is a really good point.

i've been trying to find wut cam Vette guys r running (since they r light, IRS, shorties). been bouncing back and forth from the Vette specific to the Internal sections, but i have found more info here.

btw i added that i have a 4.10 rear.

Phoenix 5.7

iTrader: (7)

what is ur goal for the car? that really determines what cam. something around low to mid 230s duration and around 600 lift, with something like a 110 or 112 lsa is a good all around cam. shouldn't lose much low down, but will scream up top with a good tune.

OJmobileII

iTrader: (3)

well... i want it to be an all around car, u know...

be able to drift competitively, run 10s on street tires, and have great street manners (drive in rain, snow, hail, etc).

wut do u suggest for those goals?









sorry, couldnt help myself. jus playing around. i should have included my goals in the first thread. consistant mid 11 e.t.'s and/or 125ish traps w/ about 1.7-1.8 60' on drag radials at the track and jus a fun street car (highway rolls).

i was looking at a Comp off the shelf 232/234 .595/.598 112LSA or something similiar to the TRex v2. but any suggestions r appreciated, i really have no idea wut will be best for this setup.

Studytime

iTrader: (15)

What about my favorite cam? The 230/224? If you "have no idea" check it out. It will make driving in the snow/rain a lot better than some of those giant cams out there.

With a good launch it could do 10s on drag radials and could hit 125 mph in the quarter.

Ben T.

OJmobileII

iTrader: (3)

i was toying w/ the idea of a reverse-split cam and its so convenient that theres a thread discussing ur proposed cam at the top of the board. wish i can put a leveler on that torque curve, it looks to be more level than any of the floors in my apartment. the owner seems happy w/ it.

wonder if the '02+ springs will hold up w/ this cam? i'm sure a simple search will give me more answers about this cam. i was leaning towards things w/ about a .600/.600 lift w/ some dual springs, but if people think that smaller lift would be better i might jus keep the LS6 springs (i'm way over budget and only doing the cam now b/c the motor is out).

most LS1 RX7 owners i've asked seem like they r running a Z06 or MS3, if that helps. i jus wanted to get opinions from some of u experienced guys (i know some of u r on ur like third aftermarket cam)?

gnx7

iTrader: (28)

To run 125mph+ you will need long tube headers and fully ported heads. Expect to trap around 120mph without them.

OJmobileII

iTrader: (3)

the cam is not going in now b/c of a need for speed. it is jus due to the ease of install w/ the engine out. i was planning on having the heads ported later. as far as the long tubes go... i was going to try and take the shorties as far as i can. the 125+ goal was an and/or thing depending on my 60' and E.T. (gnx7 someone over at TC went ~11.4 @125 w/ 1.7 60' on TRex all-motor stock heads, but i think longtubes)

i dont think i want to go w/ a reverse split cam after some research. i definitely want something w/ about a .600/.600 lift but not too high of duration. most off the shelf cams w/ that kind of lift have some pretty high duration.

i can always get a lower duration and lift cam and go w/ 1.8 rockers when i decide to do the head up right.

currently looking at the CompCam i mentioned earlier 232/234 .595/.598 112LSA, Comp 228/230 .571/.573 112LSA, Comp 224/230 .581/.588 112LSA, or Crane 228/232 .600/.600 112LSA... going to try to find an off the shelf cam for now.

OJmobileII

iTrader: (3)

probably going w/ the Crane 228/232 .600/.600 112LSA...

unless i come across some bad info or good info about something else (lets be honest i probably will be deciding for a few more days and even after i put the order through i wont really know if thats wut i really want).