I was told we can change our cams to the new RL cams and can expect a 12HP gain is this true, and if so has any one done it,and besides the RL being a 3.5 how do they get the extra HP

 

Havne't heard this @ all before...

 

I'm pretty sure Type R or ThinJim can chime on this. I always wondered about upgrading our cams.

 

check my sticky at the top of the forum titled: my 3.5L journey begins...

 

Makes me wonder though, can the cams even fit ? Or would we ahve to go even further with a 3.5 swap?

 

the 3.5 is essentially a longer stroke, thats it. a 3.2 w/ RL cams should clear the valves no problem. i don't see why not.

 

they will the high lift spec on the RL is the same as the type S its pre vtec where any gains will be had and they are there ...if you can do the swap your self this is a good mod...the RL gets it's gains from the stroke the 11:1 compression and improved heads and upper intake

 

the 2 cams cost about $600 right? How much would a shop charge to do this, if I was going to get my timing belt changed at the same time.

 

Front: 231.38
Rear: 231.38

That's before shipping. But its recommended to change the valve springs too.

 

why the high lift side of these cams is identicle to the type S

 

primary and secondary are the only things increased, right?

i will agree, you don't HAVE to change the springs. but i replaced my springs bc i was told by thinjim the rates are different. the RL springs are rated for the higher lift, thus i would assume a bit more effecient.

for someone swapping in cams, i don't think it matters much, but since i rebuilt my whole motor i went all out on every step. just a recommendation, not a necessity. but to this day, i dont know of a single person who ran their car with the cams. as far as i know, i will more than likely be the first. i know jim test fit it, but he never made mention of running the motor with it for an extended period of time.

 

Maybe with my next bonus from work I'll do the cams upgrade.

 

should be about $500 for cams shipped to your door. not including install. and no one knows how much HP? i'd wait on it for someone else to do it, or for me to get my car done and hit the dynos.

 

just an urban legend

 

Yeah, they fit and lift is on RL

And valves identical too.

 

Search before you type.

 

Wow, this sounds good !! We need a guinea pig to test the 3.5RL cams ..... Would you need somekind of fuel management to get the full potential of those new cam profiles ? (Like a VAFC).

I'm dreaming of going past the 250whp number with my N/A auto..... this might just do it ...

 

i don't disagree the valves are different, but someone may want to search more into the valve springs.

 

our vavlve springs were engineered to take the 7100 rpm fuel cut of the 36.389 lobe

 

250's easy go for 275

 

anythng have to be done besides swapping out the cams? liek ECU or other parts? is it that direct and problem free? Would it be compared with the same gains as headers?

 

Ugh, making me reach into my wallet again!

But do you think it'd hurt if you decide to put on a Supercharger with the RL Cams?

 

I kind of like the sound of this...

I question the same thing as banana though... Would you need a VAFC to tune it properly or could the gains be had right out of the box?

EDIT: I'm actually very interested in this mod.

 

You think one could reach 275 N/A whp without the 3.5L swap ?

 

cams will bolt on, no tuning necessary. no tuning needed for the 3.5 stroker either.

 

And no valve clearance problem at all ? just want to make sure .....

 

unlikely but possible would probablly have to turn 8.5K rpms

 

How much would a shop charge for changing the cams on our car. This would be a pretty nice upgrade especially if it helps with the low end torque. I hope I am understanding this right??

 

depends ...if the CAMs cane be changed w/o pulling the heads which i think they can cant be more than a couple hundred

 

NO I ck with my mech. who is going to do the work I Will be the first one,We just put in E-mangement ,after the Cams s/c will follow I will dyno before and after

 

let us know the results, when are you planning the install? did you source out the cams already?

 

this should definately be interesting....

 

Are you gonna dyno the car before and after NA? Or with/without the SC? It'd be more helpful for the rest of the board if you just do a dyno for the cams.

 

I will dyno be fore and after,like I always do.In the next few weeks I am waiting to be operated on other wise it would already be installed hoping for about 12HP I am now at 242 HP and 202 torque Have all comptech mods plus a few others ,when I installed NOS it was more like a toy after the S/C that will come off

 

12whp? sounds good. i'm glad someone is doing it to a regular j32 motor. if you see 12, i'd guess i should see over 15. good luck with everything john.

 

I'm just curious can you swap in these cams if you have a UR crank pulley? I don't want to sound like a noob but would this mess up the timing if you didn't use the stock crank pulley?

 

no, I personally beleive the the stock ecu will automatically compensate for any additional fuel the car may need. the o2 sensors will tell the ecu if the car is lean or rich and make adjustments. I think the change will be small in the demand for fuel, and think the ecu can handle it.

the rl springs have a few lbs more seat pressure. we had check the springs on the cl and rl and the rl springs are slightly stronger. I had the tensions from both and can not find them but they are better. I wouldn't push this valve train above 7500-7700, I think that's all it's good for with a fresh set of rl springs. and besides, you'd never be able to get beyond the rev limit, so no worries in that department anyways.

 

hmmm this is becoming more and more interesting to do. Cams+Headers+Crank Pulley would make a nice J32 without completely breaking the bank. I might have to scrap the kit and do this

 

just so you guys dont ahve the wrong idea...i dont think you'll see any peak gain...the high lobe of these cams are idneticle ..but down low you may very well get 10-12

 

Down low is the key because these freakin cars suck on the low end.