soontobeLS1

Just wonderin if it's possible to get a cam and not lose any low end power. I know that a cam moves the powerband up. I just love the sound of a cammed car. And the extra power won't hurt either.

Thx

luvmeZ28

iTrader: (3)

its worth the little that you will potentially lose.

ULTIMATEORANGESS

iTrader: (4)

i would think gears would cure any low end power loss.

soontobeLS1

I'd love to get 4:10's in ASAP, but rumor has it, our week rear's won't hold up.....Was thinkin just getting a 9 inch with 4:10'a already in.

Full-Force

iTrader: (11)

I think you can go pretty big and not loose any low end. I have a Hotcam in my car 219/228 .525 112LSA and it stronger than stock down low by a good bit. Based on the fact that you are concerned with low end power I think a 224 cam would be right up your alley.

And yes, the 9" is the way to go.

MM98

iTrader: (13)

Might even look into the GM ASA cam (226/236 525/525 110lsa)... Supposed to pull really well down low & through the midrange.

-Mike

blkZ28spt

The power gain typically more than makes up for any low rpm loss.

Gears will help quite a bit with drivabilty as well as performance.

Why are you worried about low rpm power loss??

Another_User

If I could do it all over again, I probably would have used that cam. And had an automatic, LOL.

luvmeZ28

iTrader: (3)

just get a 12 bolt on 9 inch, dont go through the nightmare that i am right now. gearing my 10 bolt is the biggest mistake ive made. the money ive spent now, im half well over half way to the price of a 12 bolt.

jaberwaki

with any baby cam...anything in the 224 duration range you are not going to lose any rpm power that you acually use...(unless of course you use 750-1000 rpms ) and of these cam can put you in the 385-400 rwhp range with full boltons while retaining complete street manners.

jaberwaki

oh yeh and 9" have 4.11's

SSpeedracer

iTrader: (8)

Agree. Funny thing is that in traffic I can leave the 220 cam in 1st or 2nd and w roll very smooth at idle (830 RPM).

300bhp/ton

YES

Its called buying a milder than stock cam. It will reduce PEAK power and probably PEAK torque but it will move it further down the rpms, giving the sense of more low down grunt.

THIS HOWEVER IS A COMPLETELY POINTLESS MODIFICATION

There is no way on increaseing bhp (n/a engine) and not moving the PEAK torqu up the revs.

Remember BHP is a calculation of PEAK torque and rpms, if you have to cars producing the SAME torque but one does it 500rpm higher then it will also have a higher PEAK BHP number too.

There are 3 ways of increasing engine BHP (once all the lost bhp from intake and exhaust has been recovered):

1. More revs, ie moving the power band up the rpms. This sometimes involves much higher rpms (race engines and 4 cylinder cars).

2. More capacity, the more fuel and air = a bigger bang = more bhp.

3. FI, this is probably a good compromise, as it can give big cc stlye grunt with the same high revving characteristics of a high lift camshaft.

Naked AV

Yes, it is possible, and do-able.

The cam in my sig was especially designed to ensure no low-end was lost, since the vehicle might be used for towing.

The results of my research into cams yielded the following traditional split numbers for cam durations that, when used, would result in an increase in overall power, while retaining all low-end from a 650 RPM idle:

5.3L LM7: 206/212
5.7L LS1: 208/214
6.0L LQ4/LQ9: 212/218

Hope this helps.

nuzee

iTrader: (2)

The 206/212 cam gives an increase right off idle. Couple that with the upper rpm power increase of the 1.85 rockers and the result is an increase of power all over. This is power that you'll feel everytime you touch the throttle.

If I want more top end power I'll get headers. This cam is not a 10 second cam, but it has got me some pretty decent track times for what it is. See my sig. Actually, for guys that are going to stick with the stock torque converter, this sized cam works well. I used to run 12.5s@110 with 1.85 60s with the stock TC.

Naked AV

Is it the SLP rockers that give you upper RPM power, or is it the extra lift that gives you upper RPM power? If it's the extra lift.....

Instead of doing both a cam and rockers, you can get extra lift built right into the cam itself....Comp's 206/212 is .515/.522 lift, whereas Cam Motion give you .550/.544, no need for rockers for extra lift.

Sharpe

iTrader: (7)

Good thread.

nuzee

iTrader: (2)

From dyno graphs of others using high ratio rocker arms, it seems that they kick in from 4000 rpm on up. I would guess that the added lift starts to become a breathing factor from that rpm. I also don't discount the valve train stability benefits of the higher ratio rocker arms and similar benefits of a low-lift larger base circle cam. So, it seems it could be a combination of factors that enhance the upper rpm gains.

Naked AV

Interesting....would like to hear more on this rocker arm idea. The people I've been talking to seem to poo-poo them as gimmicks.

skippytheloon

iTrader: (14)

Do yourself a favor and get a good clutch and a big cam, since your clutch will like to engage around 2k, you will never notice the 5hp loss at 1k rpm that everyone always freaks out over. Maybe even grab some 4,11's and you'll have the same if not more lowend than the ppl that have the small cams with stock gears.