I have a midly modified 350 (ported heads, ported big mouth intake, large tube runners, 52MM throttle body, ZZ-3 cam, headers, and all free mods), is it worth my effort to change the cam to a ZZ-9?

Thanks

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1988 Formula 5L/5sp 3.45 gears, SLP cold air kit, MAS gutted, TPIS air foil, TPIS AFPR, MAC headers, Mac under drive pulleys, MAC cat back, Relocated MAT.
Best ET street tires 13.85
Best 60 FT street tires 1.930
Best MPH street tires 99.29

 

IMHO, no it wouldn't be worth it. Changing to an appreciably larger cam like the LT4 HOT cam or a CompCams 218/224 would actually make a difference, but the ZZ9 cam only has a few more degrees of duration. Plus, you can get the other cams much cheaper.

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Greg Westphal
'87 IROC 355TPI/A4

 

So would the LT4 HotCam be appropriate for a lg. cid SBC with AFR 195 heads and a SuperRam intake?

 

It would work pretty well, but you could go even larger depending on how many c.i. we're talking about. For a 383, a 224/230 or 224/236 cam would be better, possibly 230/236 if you're burning your own chips or can go to a place that will burn chips for you and help tune it up.

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Greg Westphal
'87 IROC 355TPI/A4

 

Can you put the LT4 HotCam into a 305?

 

Yes, you can install the LT4 HOT cam in any 1st-gen '87+ SBC, but it won't idle very well in any engine less than a 350. Mine still idles a little rough at 750 rpm, but I'm getting 14" of vacuum in Drive at that engine speed. A better cam for the 305 would be the regular LT4 cam or something like the Xtreme 206/212 or High Energy 210/220 (both from CompCams).

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Greg Westphal
'87 IROC 355TPI/A4

 

The ZZ9 is a "tweaked" version of the ZZ3 & ZZ4 cam according to TPIS. I have a brand new one that I am not going to use. Anyone want one for a killer deal?

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1986 IROC, fully loaded, Mini Ram'd 383, Art Carr 700R4, Accel DFI, 12 bolt rear, etc, etc......