southerniroc

I am starting to understand this a bit more now, but there are a few things that I am still confused about. How can I find out the lobe seperation on a cam? Is it the lower the number the harder the car will lope?
What is the stock size of the cam on my car now? If I decide to go with the Edelbrock 6085's what would be a decent cam? I thought about the ZZ9 or the Crane CRN-104224 which is 214/220 .452/.465. What do you think?

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87'IROC-Z 350 TPI
Ported Plenum,Hypertech Air Foil,Ram Air kit,SLP headers,AFPR,80series flowmaster and MAF screens removed.
14.61@94mph(90+ degree weather)

Dan87IROC-Z

That Crane cam has just a bit too little lift, the duration is nice, but will probably want some more lift. The ZZ9 is a good choice.

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1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission with 2.77:1 Rear End

Current Mods: Edelbrock TES Headers, Hooker Cat-Back System, Performance Resource Chip with 160* Thermostat, Accel Ignition Components, K&N Filters, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET: 14.3 @ 97mph

Ski89Z28

Sorry, can't answer the question about the lobe seperation but you don't want anything lower than a 112 degree LS for a computer controlled car.
As for the cam, I have a 89 350 TPI with the edelbrock 6085 heads and 1.5RR with the ZZ9 cam. I like it and it really pulls when the rpms get at 3000, I actually feel myself sink into the seat a little. Now I have the stock intake manifold and runners and that is really limiting my top end and power. So with any cam and head change you do it would benifit you greatly to change the intake manifold.
My time are in my sgnature but this was the very first time drag racing. I think I can get into the 13's (like 13.99) if I practiced.
Oh, I also called Edelbrock to find where the springs bind and the guy said they are good to .560 lift cam. So the ZZ9 will work with 1.5 RR. Their paperwork with the heads states NOT to use 1.6 RR, don't know why.

Good Luck!


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89 IROC 350 Auto
TRUE DUAL Exhaust
Edelbrock Performer Aluminum Heads
ZZ9 Cam
TPIS Level 5 Chip
14.01 @ 97.0mph with 2.77's gears

southerniroc

Ski89Z28,

What headers are you running on your car? I have the SLP 1 3/4 on mine and didn't know if they are going to work with the Edelbrock heads. I emailed them but they haven't returned it yet. What kind of RR are you using. I thought about the Crane Gold, but man are they high. I guess you get what you pay for and I want to do it right the first time . thanks again for your help

Matt98SS

I like the LPE 219 cam for you. I recommend that cam all the time....I admit that, but it is one that we really have had good luck with on all cars....never made one run bad. and it is mild and idles well.

yes Lobe seperation the lower the # the more lope you are gonna have...but durations effects that as well. think of lift as free HP. to find out the lobe seperation angle look on the cam card or call the manufactuer. the intake centerline is something different you really don't have to worry about right now.

that Crane cam is pretty weak on the lift, and the ZZ9 I don't like that much except for 305s and GM headed 350s. has too much split in the duration IMO. the LT4 hot cam is a better cam for cheaper than the ZZ9.

hope this helps some

Matt

southerniroc

Where can I find the price and more information on the LPE 219 and LT4 cam? I looked at LPE's web site, but I couldn't find it.

Dan87IROC-Z

Isn't the LPE 219 cam a little too little duration, I know it has good life, but the duration isn't much better than the stock 350 cam.

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1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission with 2.77:1 Rear End

Current Mods: Edelbrock TES Headers, Hooker Cat-Back System, Performance Resource Chip with 160* Thermostat, Accel Ignition Components, K&N Filters, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET: 14.3 @ 97mph

Matt98SS

how can it be too little duration when you recommend the ZZ9?

it is 219/219 .525/.525 112 LSA

LPE 219 can be found at www.lingenfelter.com

GM LT4 HOT cam can be found on the GM Perf. Parts web site...not sure off hand what it is

southerniroc

Matt,
I checked out their site and the numbers you gave me were for a car with the super ram induction right? I wont have the super ram for a little while, so would it still be ok to run the cam without it? That is with 1.5 RR too, so if I was able to run 1.6 RR it would be a lift of .560/.560.

I found some information on the LT4 hot cam. 218/228 .525/.525 at a .50 lift with a 112 lobe seperation. Not bad for only $175 versus $375 for the ZZ9 and $320 for the LPE 219.


[This message has been edited by southerniroc (edited September 15, 2000).]

Pony Killer

Those edelbrock's flow comprably to a set of vortecs.... soo given they can use a bit more compression. The LPE 219 cam is a Symetetrical cam... so if your going for a high performance motor...I'd go with an Asymetrical cam if you like a smoother type idle and give up a shade of performance to be ingocnito either

Crane hr-284-s2-Ig
pn 109831
222/230
.509/528
112 lsa
on a tpi 350 that should work well with the computer modified. keep the Idle civil and power till 6000 rpm with the proper runners

Comp cams
08-305-8
276-hr14
220/230 .510/.510
114... more civil to the computer
they should work with a custom prom, and either aftermarket runners. So it will run to 6000 rpmm

If your looking for a rougher idle, and more top end power

Comp cams XE276hr12
224/230
.503/.510
112lsa
gotta modify the plenum, runners and exhaust, and an aftermarket chip to run it..
probably would help to have an higher stall converter.

If your looking for pretty mmuch top end performance with a stall converter around 2800+
Comp cams
290 HR12
pn 08-306-8
230/244
112LSA.



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It's always SOMETHING
"Sounds like Barry White at idle, Teddy Pendegrass wide open..
if it don't sound like Micheal Bolton your alright"