I'm having a hard time with a cam choice. I have a Crane Powermax Hydro roller cam already (listed in my sig) but I'm thinking about swapping out for one with more duration. I'm thinking about getting something like the one below.

Lift: .558''/.558''
Adv. Duration: 306°/314°
Duration @ .050'': 240° Intake / 248° Exhaust
RPM Range: 3500-7000
LSA 110°

Any thoughts on a swap such as this? Also, i have 1.6 rockers so my lift is gonna be closer to .600". My compression ratio is around 10.8:1 as well. I'm looking to make 450 hp at the crank or better. The combo I have now will produce around 410hp with the carb. I'm going to be switching to an Edelbrock Pro-Flow RPM EFI setup as well. A 3" true dual exhaust system is going on next month. Thanks in advance.

 

What have you got to trade? I have a similar cam that I think is going to be too big for me.

RACE ON!!!

 

well, it would be the Crane powermax hydro roller cam in my signature that I could trade (only has about 200 miles on it right now). What are the numbers on your cam and is it a hydro roller?

 

It is the one you say you want except for the LSA. Mine was specially ground with a 115* LSA. It takes the non-roller (retro) cam sprocket and has a reduced base circle to clear a stroker crank. Do you have the cam card for yours?

RACE ON!!!

 

Here is the "generic" card for my cam.

http://www.cranecams.com/index.php?s...31&lvl=2&prt=5


So the cam you have is identical to the one i described other than the LSA being 115 (it is a hydro roller...what brand is it?). What exactly does a 115* LSA bring to the table over a 110*?

 

I was more than content with my 219 cam. The thing ran 120 mph in the 1/4, ran wonderfully every day, it passed emissions. What more could you ask for?

John did a wonderful job designing that cam.

 

If this works, here is mine.




RACE ON!!!

 

You got mail!

 

I got the springs that Crane recommended for the cam I have. Will they work with this cam even though they are 18lbs more open?

 

Nevermind, its the same spring set they require for my cam.

 

i have a zzx cam in my 91 350ci.. specs are 241/241@.050 .598/.598 lift with 1.6 rr's. i havent gone to the dyno yet but im expecting over 450 fwhp.. i went with a minram to take some torque away from the lower rpms. its a little easier on components.

i will warn you up front.. it is a very big cam for a 350ci, idle is fair to poor. at 850 rpms you will only make about 7 in of vacuum.. you will need to raise your idle to at least 1000 rpms to get 11 in. for a carb it is cake to tune. but for efi you will need to spend countless hours to get it right. ive been working on mine for about 3 weeks and im close but there is some fuel economy left in her.. low end torque will suffer some but it will scream from 3500-6500 rpms. drivablity will be almost non existant under 1800 rpms.. im getting a ton of reversion up to that rpms., but it smooths out nice at 2000 rpms. and because of the short runner on the minram ive noticed some inconsistantcy of air flow at idle and low rpms. i get more air to the front cylinders at low rpms.the plugs tell my that.

i have a 6speed with 3.33 gears, and with this combo im thinking of going to 3.73 or 3.90 even though first gear goes by fast already, i think it will help on the stress off the line and give me a better 60ft time.

after saying all that i do love my setup but it is very radical for the street.. once you get it setup right you will be happy.

dont get me wrong i love efi, but you may find you will reach your goals with your carb setup and it will be much easier to tune. i would try it with your carb first, bring it to the dyno see what you get, then if you change to efi see what your gains are.

 

what is your compression ratio with that setup and what else do you have done to the motor? The cam is right where the one i'm lookin at will be...accept this cam has 115* LSA... That will drastically increase the manners at idle won't it? I'm still trying to figure out what the 115* LSA has over the 110* LSA of the same grind.

 

im at about 11/1 cr.. the lsa on my cam is 112.. so it will be lower vacuum that one with 115 and 115 lsa will idle a little better. i wouldnt go 110 if your planning to go with efi. carb it would be ok.

i have tpis headers, ramdom tech cat, borla stingers, dart pro1 200 cc heads, miniram, 52 mm tb, svo#24 injectors, msd digital 6 ignition, copm cam pro magnum 1.6 rr's, and all the free mods. dont forget 150 shot of juice..

not to get off the subject but i hit the nos yesterday for the first time on this new setup and it litterally scared me. im expecting at least 500 rwhp and i solid mid 10 run this year.

 

the next thing you need to ask yourself is.. can your motor handle shifting at 7000 rpms..

 

Looking at a cam like this....i would hope so If not, who ever is building the motor is a dumb ***. To answer you question, yes... everything is balanced up to 9500 RPM and the exhaust will handle it. The rear end however....will need to be replaced. So with the 115* LSA i would maintain somewhat of a "streetable" aspect while at the same time delivering high performance characteristics as well. So what type of power do you think i'll be making with my setup (see sig)? I feel that properly tuned i should be in the 440hp range.

As far as the funny juice test drive...you are efffin crazy!! 150 shot through a 450+hp motor...man, you've got more nerve than I. lol

 

if you go with a carb setup, i would go with a victor jr intake. i think you should be at the 450hp mark..

with efi you may make a little more..

yes i am a little

 

Exactly my thoughts.... I have a victor Jr. sitting at home if i stay with a carb (cowl induction hood is a must if i use it...lol). I feel that I will swap to the EFI though. The Edelbrock pro-flow RPM EFI setup uses an intake similar to the victor series as well. So do you think I should go with the cam that has the 115* LSA or the identical cam with 110*?? As far as you being a lil'
.... you're absolutely right! and RACE ON!!

 

Reply sent.

RACE ON!!!

 

if your thinking of an efi swap.. then go with the 115 lsa.. if not 110..

 

Sounds like a plan to me. Jim you got mail!!