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I want the Socal advice on a cam as most of you Socal People are all smog legal. I want a cam that will give me more power, but it must be able to pass smog. I am ready to yank on the tiny Powermax 2032 and upgrade. What would give me a noticable gain? My mods are in my sig.
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88 Firebird Formula 350 89k miles 13.1 @ 105... 1.8 60ft W/ low compression in 2 cylinders and smaller cam... Superram- Trickflow AL Heads- 268XFI *3290 LBS*
To Do List: Tranny (#3), Rearend (#3), Paint... Then DONE!!!
Passed with modded TPI. A functional EGR system will soon be incorporated (by me) into my HSR. I feel confident I will pass with EGR adaptation, but we'll know for sure next October- November (2010).
I say Call the cam builder of your choice, give them your specs & let them rec a cam. It will come to a point of whether you want a quick street car or a fast drag car. (that passes or doesn't pass smog)
I also think the comp 268 XFI is a good choice. All the people I have seen with it on here have at least 320 hp at the wheels and pass smog. Its the one I want to use for my build, but thats quite a ways away.
I say Call the cam builder of your choice, give them your specs & let them rec a cam. It will come to a point of whether you want a quick street car or a fast drag car. (that passes or doesn't pass smog)
I've never had good luck with any cam company that knows TPI engines. They all know either carb engines or LS1s.
So I know the xfi 268 is popular, but would it give me more power than the lpe 219? I know the 268 is a lot more popular, so I'm assuming it will give me more power. Also, what type of power increase should I see with the 219 over my powermax?
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88 Firebird Formula 350 89k miles 13.1 @ 105... 1.8 60ft W/ low compression in 2 cylinders and smaller cam... Superram- Trickflow AL Heads- 268XFI *3290 LBS*
To Do List: Tranny (#3), Rearend (#3), Paint... Then DONE!!!
Ok, that head is limited to .540" lift. The XFI268 camshaft is rated at .570" lift with 1.6 rocker arms. So you would have to run 1.5 rocker arms if you chose that cam.
The 2032 is 214/220, right, but only .460 lift. The XFI268 is .540 lift with 1.5 rockers, I think. And its 218/224. Yes I'd say you will notice a difference. Also, the XFI268 is about 10 years newer technology than the LPE219.
Okay, go time. Sticking with my 350 and going to have it rebuilt before I head to japan and throw it in. Going to get the heads ported, the 268 cam is what im looking at. Hows that sound?
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88 Firebird Formula 350 89k miles 13.1 @ 105... 1.8 60ft W/ low compression in 2 cylinders and smaller cam... Superram- Trickflow AL Heads- 268XFI *3290 LBS*
To Do List: Tranny (#3), Rearend (#3), Paint... Then DONE!!!
Big difference duration wise. Not much lift wise. Vincent is running the 280 along with a couple of others. Como can also do a 274 as the lobes are listed in the catalog. Might be a good compromise. As to lift with 1.5 rockers you don't have to worry. You will be way under .600" lift.
Will it pass the sniffer with a 383, 280 XFI Cam, Ported TrickFlows, Superram? That's another concern. I see alot of you with high 300's to the rear tires and passing the sniffer.
I mean I could go Scat Forged 355, but a scat forged 383 kit is only like $40 more... What would you all do Cubic inches wise?
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88 Firebird Formula 350 89k miles 13.1 @ 105... 1.8 60ft W/ low compression in 2 cylinders and smaller cam... Superram- Trickflow AL Heads- 268XFI *3290 LBS*
To Do List: Tranny (#3), Rearend (#3), Paint... Then DONE!!!
Hows your cat? If the tune is right, it can be done.
I would go with the 268. Going with a 383 instead of 355 is mostly a matter of do you want to clearance the block, if you're replacing everything else anyway.
If you're more concerned with the sniffer and gas mileage, go with the XFI268. If you want more horsepower and dont mind the additional tuning headache, go with the XFI280. Its your call.
Will it pass the sniffer with a 383, 280 XFI Cam, Ported TrickFlows, Superram? That's another concern. I see alot of you with high 300's to the rear tires and passing the sniffer.
I mean I could go Scat Forged 355, but a scat forged 383 kit is only like $40 more... What would you all do Cubic inches wise?
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, Dyno Don's SFC's, LCARB's, Boxed LCA's, KYB struts & shocks... 
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