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http://web.archive.org/web/20071115013430/http://www.impalassforum.com/vBulletin/showthread.php?t=75422



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#1
Old 09-02-2000, 01:30 AM
Hi all,

I am considering a new cam, roller rockers and a mild port job on my 96 SS. I am, however, concerned about passing smog here in the Socialist State of California

Is anyone in CA running a new cam and passing smog? I don't mean barely passing or passing through a friend, I mean passing.

If so, please tell me the mods you made and part numbers if you remember. This is a mod I probably will do in the next several months. After I get my new Neal TC from Dan!

Thanks,
Mike
96 BBB
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Brewdawg
#2
Old 09-02-2000, 02:34 AM
AutocroSSer

On a stock displacement motor WITH CATS, you can pass with a surprisingly wild setup (out the tailpipes at least).

For instance, Marc McGovern on his 96 SS with 396 LT4 and 846 cam passed.

Also, Joe Watring in LA has passed emissions on his car with ported heads and LT4 HOT cam.

If you run anything close to a streetable cam in a stock displacement motor, tune it right, and keep the cats you should be able to pass.

Ed
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AutocroSSer
#3
Old 09-02-2000, 03:28 AM
Brewdawg
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Can I use the 846 cam in my LT1? I saw the 350 Hot Cam kit in Jim Pace's catalog and I like it (BTW, ever deal with him?)

What are the real differences between the Hot Cam, ZZ3, and 846 cams?

I am buying a 2500 stall, Neal TC from Dan Ferraro on his GP. So a cam is next.

My wife will kill me if she finds out about all of this

Mike
#4
Old 09-02-2000, 08:38 AM

SSMOKEM

Hey BrewDawg,

Here are the 3 GM cams:

12370845 Hydraulic roller design I:214 E:224 I:488" E:509" 112

12370846 Hydraulic roller design I:222 E:230 I:509" E:528" 112

12370847 Hydraulic roller design I:234 E:242 I:539" E:558 112

You might also want to consider the Comp Cam 304 which I have right now. It's a 210/220 with 0.500/0.510 lift with 1.5s and 114 LSA. It's a VERY torquey cam and you'll love it if you like burnouts

With headers, SLP converters and the Comp 304 cam, I went from 14.84 to 14.04! Quite a nice drop, don't you think?

------------------
George

1995 Impala SS "Cherry Bomb"
Best ETs: Faster than my '65 Chevy pickup
Mods : 93% stock
#5
Old 09-02-2000, 01:45 PM

AutocroSSer

To keep it somewhat streetable, I'd stick to one of the following on a 350 CI LT1 :

* ZZ3 : easily pass emissions, but pretty mild.
* 845 : good torque cam, more radical than above
* CC304 : See George's comments

The HOT cam is really not ideally set up for an SS (too "peaky", loses low end torque). The 846 or CC305 will be downright annoying on the street (also too peaky).

Ed
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AutocroSSer
#6
Old 09-02-2000, 02:31 PM

ReeseSS
Cool
Hey Brewdawg, If you want a more streetable set up, check out the crane 40-104227. Add some 1.6 bowtie rockers and the crane 10309 springs and you will be on the road without even pulling the heads!

------------------
Mike Reese
96 DGGM SS
Cape Coral, FL
21 mods and ? yet to go
#7
Old 09-02-2000, 06:13 PM

MR. D
Agree strongly about the CC304. It's a torque monster. I'm running it in my '95 9C1 along with ported AL heads, 52 MM T body,
Edelbrock headers, 1.6RR, F Car MAF, SSRI,
3:73,Flowmaster cat back and Ed Wright PCM and have run a best of 13.68 @ 100.2 MPH at Firebird (1325'elevation)It dynoed 306 RWHP and 344 RWT. I had the cc305 in the car for a while but really do like the 304 better.
#8
Old 09-03-2000, 02:40 AM
Brewdawg

Ed, George, & Mr D,

Thanks. You guys are great and have given me a lot to consider. MAN I LOVE this forum!!

Right now, I have the G-hann headers, high flow cats, B&B TriFlo exhaust, BBK 52 MM TB, et al. Soon to have a 2500 stall Neal torque conv through Dan Ferraro's GP.

So now, all I have to decide is what cam and gear ratio. My car is a daily driver and I am tending toward the Comp Cam 304 (per George & Ed) and the Crane 40-104227 (per Mike).

As far as gears, it seems everyone runs the 3.73's. Did you guys upgrade the driveshaft? Isn't vibration a problem? Although a daily driver, I have been known to drive 100+ MPH for hours. I've been told don't bother with the 3.42's by most. But others have said they prefer the 3.42's over the 3.73's for long trips.

Ed, as you know, here in So Cal traffic can be bad but we can get on some good highways out to Phoenix or Las Vegas and get going fast.

I've been vacillating over 3.42's and 3.73's for 2 months now. I wish I could drive both and see which I liked better. I hate it when I un-do a mod and like to get it right the first time.

George I know you have the 3.73's per your website. What do you other guys have?

Mike

#9
Old 09-03-2000, 09:42 AM

SSMOKEM

BrewDawg,
Just thought I would throw in an additional comment about the Comp 304. You saw Mr.Ds best NA time of 13.69 at 100.2, my best time with similar mods was very close, 13.72 @ 100.7. But the best part is that the Comp 304 really seems to love Nitrous!

As an example, my best N2O time with this cam was 11.93 @ 114.45 with a 1.78 60'. So if you're thinking about the juice later on, it's just another plus

As far as gears, if you go to 3.73s, which I strongly recommend, the odds are pretty good you'll need the DynoTech driveshaft if you like to run 100+. Once I switched to 3.73s, I found vibrations starting around 90, which the DynoTech completely removed.



------------------
George

1995 Impala SS "Cherry Bomb"
Best ETs: Faster than my '65 Chevy pickup
Mods : 93% stock
#10
Old 09-03-2000, 12:16 PM
ReeseSSBrewdawg, I know what you mean, I went back in forth for a long time with that one. I am trying to stay centered on being as streetable as possible and went with the 3;42's. I think it was an error and will end up later switching to the 3:73's. Noticed some difference but not a lot, over stock.

------------------
Mike Reese
96 DGGM SS
Cape Coral, FL
29 mods and ? yet to go
 

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Thanks man. I sticky'd it again.

Mike
 

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Ive got a 96 Imp SS...mods: RAISS intake, bbk headers, flowmaster super 44 series mufflers, hypertech programmer...
i wanted to know what would be the best cam set up for my impala? Im not really to sure what cam to use...anyone have some advice?
for the basics and a small up grade that you can still daily but still will be better with a program. all the research i did over the years people like the GM 845 cam, and the Crane 227.

I was told by Lloyd Elliot that a GM 845 cam, some of his stage one heads, and upgraded from stock valve springs, will give me another 100 H.P. over stock and idle allllmost like stock.

I was going to do this project a while back til i backed down. and left it stock.
 

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for the basics and a small up grade that you can still daily but still will be better with a program. all the research i did over the years people like the GM 845 cam, and the Crane 227.

I was told by Lloyd Elliot that a GM 845 cam, some of his stage one heads, and upgraded from stock valve springs, will give me another 100 H.P. over stock and idle allllmost like stock.
From doing that cam alone he got 100 HP? Seriously!
 

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Anyone know anything about the CompCam 501? Have a guy close with one for sale. Price is good ($100). He claims the LT1 will pass Cali emmissons with it but I'm not sure??:confused:
 
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