I have a LO3, daily driver, cold and hot weather (Michigan). As of now, totally stock, getting open air soon, and flowmaster 80. What would a good camm set up be? What type of lift and duration? Should I get 1/6 rockers? good gains? Thanx!

 

IMO, get a Summit cheapo 204/214deg at .050" lift with .420"/.442" LIFT CAM FOR $79 or so. Worth it's weight in gold and computer will work fine.

 

I concur. Thats probably the best bang for the buck in terms of cam. If you want to spend more, consider the one of the Comp Cams Xtreme Energy grinds, along with new lifters and valve springs.

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Daniel Burk
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Anyone recommend the L98 cam with 1.6 rocker For a mild to high modified LO3?

Thanks

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92 Camaro 305 TBI Automatic
https://www.thirdgen.org/rides/index...ew&rideid=6100

 

I've heard LT1 or LT4 cams are good for LO3's? Is this true, or the summit one is better?...

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92 Firebird 305 TBI
K&N Open Air Element
K&N Crank Case Filter
Just a begginer, soon i will advance!

 

any year lt1 cam is a great choice for an LO3 however keep in mind i would recommend you change the valve springs as well b/c the stock springs normal cant handle an lt1 cams lift for very long.. a set of lt4 valve springs 40-45, a used lt1 30-50 or so..

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91 camaro RS
- 305 TBI
Mods: Performer TBI intake, 1" TBI spacer, K+N, jet fan switch ,160 thermo,Accel control module, Jet Stage 2 chip, edelbrock TES headers, Compleate 3" Flowmaster exhaust, Edelbrock springs, KYB struts and shocks, 700R4 built by TSI, SLP tq converter, b+m trans cooler, white guage faces, megashifter..
next month: spohn LCA's and panhard rod, BMR relocation brackets,posi 323 , lt1 cam and new valve springs

 

I put in my lt1 cam a few months ago and I was wondering how hard it is to replace the valve springs on the lo3?

 

What if I just installed 1.6 rocker arms inplace of the 1.5's, would that help any noticable amount? Also, did the LO3 have flat tappet, or what?

 

Just installing 1.6 rockers will give you a little more on the low end torque, but that's about it. It will not change the operating range of the engine. The stock HYD. ROLLER cam has .234I/.257E lift (at the lobe) with 1.5 rockers that's .351I/.385E VALVE lift. If you were to use 1.6 rockers, the total valve lift would be .374I/.411E. The duration would increase only SLIGHTLY @.050 lift.

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89 T-Top Firebird 305 TBI Project Car (with approval from my wife!)

[This message has been edited by Nitroburn (edited November 21, 2001).]

 

wow, thanx for the indepth response, I am still trying to learn all I can, so that was great!

 

Who makes a good (keep in mind budget) 1.6 roller rocker set?