https://www.thirdgen.org/newdesign/tech/mods3.shtml

at the bottom of that page are the stock gm cams
i noticed the specs on the one for the
88-89 305 and 350 are

207/213 0.415/0.430 is that correct for a stock LB9 from the factory? o is it weaker? i noticed the 87 cam looks terible

-Stell



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1988 IROC-Z 305TPI MINT!!
Mods= Accell SuperCoil, MSD 6A, Ported Plenum, No MAF Screans, K & N, SLP AirFoil,180 Thermostat+ Temp Switch, Relocated MAT, Cold Air, Hooker Aerochamber Catback,MSD Ignition wires and a few other misc goodies

1988 Pontiac Trans Am. 305 TPI Beyond MINT Condition. Dynomax Catback


http://stell15790.tripod.com/cars.htm

 

We really dont know yet... The leading theory right now is the 87-89 305 TPI automatic cars have the "terrible cam" as you called it. We call it the peanut cam. But I dont know of anyone who has measured their 87-89 305 TPI automatic cam yet. The 305 5-speed and 350 automatic get the 207/213 cam in 88-89.

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.23 @ 107.62 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-

 

I'll be pulling out my 305 to swap in a 355 in a couple weeks. I'll be tearing down the engine to see how it looks after 131k miles, of which 60k miles have been run with Mobil 1 oil. I'll measure the cam specs the best I can and report back.

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Greg Westphal
'87 IROC 305TPI/A4