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 SBC 305 cam recommendation

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Shnalla

Shnalla

Posts : 45
Join date : 2015-06-04
Location : Lyon, France

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PostSubject: SBC 305 cam recommendation   SBC 305 cam recommendation Icon_minitimeThu Dec 17, 2015 10:51 am

Hi,

I'm looking for advices with cam choices for my 84 Caprice Wagon.
It has a bone stock 305 that is given for 160hp (Canadian specs) and a th700r4 tranny.
I'm looking for more torque from idle to something like 4500 RPM.

I googled a bit and found that a "RV cam" (I often see TRW #274 cam) would help in addition to a properly tuned Quadrajet and a Performer EPS intake.


Do you have any advice on the cam choice ?

The car weight 4100lbs, has a 2.93 gear ratio and stock 15" wheels.
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Andebe

Andebe

Posts : 3323
Join date : 2013-02-20
Age : 51
Location : Marion,NC

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PostSubject: Re: SBC 305 cam recommendation   SBC 305 cam recommendation Icon_minitimeThu Dec 17, 2015 10:55 am

I would recommend saving for a 350. If thats not feasible,research the Vortec 305. It will give you some power you can feel.
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Shnalla

Shnalla

Posts : 45
Join date : 2015-06-04
Location : Lyon, France

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PostSubject: Re: SBC 305 cam recommendation   SBC 305 cam recommendation Icon_minitimeThu Dec 17, 2015 11:08 am

Andebe wrote:
I would recommend saving for a 350. If thats not feasible,research the Vortec 305. It will give you some power you can feel.

The 350 route is nearly impossible because it's illegal and insurance company will screw you...
Also, sbc are pretty rare here; therefore not cheap (at least 1000$ for a stock greasy 305 engine, more for a 350...) Crying or Very sad
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Fred Kiehl

Fred Kiehl

Posts : 5805
Join date : 2009-11-13
Age : 72
Location : Largo, FL 33774

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PostSubject: Re: SBC 305 cam recommendation   SBC 305 cam recommendation Icon_minitimeThu Dec 17, 2015 11:25 am

If you can find a 1993 Caprice 9C1 cam, that should give you about 20-25 HP, There are a lot of other cam options. You should change heads, and intake manifold as well. I do not know the laws for cars in France, so I do not know what you are allowed to change without getting in trouble.

How is putting a 350 in the car illegal in France?

I believe the 84 has a carburetor, but it may be computer controlled. Getting more air in and out is the idea.

Long tube headers, assorted cam shafts, heads, intake manifolds, larger carburetors, bore and stroke increases, electric fans...they all add up. If it has a carburetor you can modify a lot more without getting into computer BS.
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MalibuSSwagon



Posts : 580
Join date : 2014-01-12
Location : NH

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PostSubject: Re: SBC 305 cam recommendation   SBC 305 cam recommendation Icon_minitimeThu Dec 17, 2015 12:29 pm

Melling MTC1 is a popular and affordable RV cam option. I installed one in my 1986 C10 305, and it did wake it up nicely. I would recommend it if your engine is in good health. New cam and new set of SpeedPro lifters was under $100 US.
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lakeffect

lakeffect

Posts : 3892
Join date : 2009-08-18
Location : Rochester NY 14621

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PostSubject: Re: SBC 305 cam recommendation   SBC 305 cam recommendation Icon_minitimeSat Dec 19, 2015 2:05 pm

While you are at it change the rockers over to a 1.6:1 ratio instead of the factory 1.5:1. It will allow the valves to open farther. The cam allows them to open for a longer duration. Both changes will give you more air.

Is you motor computer controlled? If so don't forget you'll need changes to fuel tables.

Dave
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