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Old 11-11-2004, 09:35 PM
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Help on my 350

I own a 1975 corvette. After I paid the car off I decided that I wanted more power. I have installed an edolbrock rpm performer intake, edolbrock 650 cfm carb, and a cam with the duration of 234/238 @.050. I am not sure of the horsepower but I am guessing low 300's.
I have a buget of about $1,500. I want to keep it mild and somewhat econamical(spelling?).
Thanks for your help.

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Old 11-11-2004, 11:01 PM
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A 234 dur@.050 cam and economical just don't go together. If you have a high rear gear and not enough compression to support that cam, your car will feel soggy at lower rpms,A smaller cam will give the car more zip on the street that will make it feel stronger. Whats the intended usage of the car? daily driver?street/ strip? What heads,CR,etc

Need some more info, will be glad to help
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Old 11-12-2004, 12:57 AM
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I have resently installed some 4.10's into it. I saw a great improvement with that. I would like the car to be street with a little strip. Some of my freinds and I race at the track a few times in the summer.
I am not sure about the heads. The guy I bought if from said he didn't replace the heads so they are stock. This is what I would like to replace but I don't know to much about cylinder heads. My latest compression check said there was about 10.5 to 11:1 in each cylinder.
Thanks for your willingness to help me.

P.S. The economical thing doesn't have much of an affect. I live in a small town and rarely take it over 15 miles away from my town.
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Old 11-12-2004, 06:55 AM
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If you bought a set of AFR 195cc CNC ported heads ($1,300) that motor would make between 425 and 450 hp. If you have the money, these heads are the best bang for the buck.

Adam
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Old 11-12-2004, 07:40 AM
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The highest factory compression in 1975 was 9:1, most were 8.5:1.
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Old 11-12-2004, 08:12 AM
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From what I gather, this is more of a weekend warrior than a daily driver.

Get a nice set of 64cc heads(the AFR's firestone mentioned are very nice pieces and should be for the price). Dart,World products,etc offer nice iron heads for about 800.00. The 64cc chambers will bump your CR up a full point over the 76cc stockers.

If you have an auto, a stall converter such as a TCI street fighter would be a good investment.
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Old 11-12-2004, 11:21 AM
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Quote:
I would like the car to be street with a little strip.
I think its the opposite boogie. In anycase Id still go with the same setup.

If you can afford the heads get a nice set of them . . . dont overlook the Edelbrock RPM's if your budget is somewhat limited.

If its a daily driver I'd hold off on the stall coverter for a bit. You aren't going to need it with a street cam and those gears. What do you have for exhaust? Headers? what kind? what kind of mufflers?

Do some research on tuning the carb and setting the right timing, both initial and mechanical. You'd be surpised at how many peoples cars are underperforming with what they have.
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Old 11-12-2004, 01:12 PM
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Thanks for you help. I will look into those heads.

As far as exhaust goes, I honestly have no clue what is on it. It has headers on it but I am not sure of the brand. The exhaust pipes are 2 or 2.5 inches and I am not sure of the mufflers. This is an area that will be needing upgrading soon.

I have a full day to mess around with the car. I will research more on my carb and try open it up a bit.

Thanks again for all your comments.
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Old 11-12-2004, 04:39 PM
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here is the website for those AFR heads that I was talking about. You can look at dynoed combonations and compare them to the components that you have and see how much hp you could expect. Another thing, If you are planning on sticking with the 350 for a long time, I would also consider the 180cc heads.

www.airflowresearch.com

Adam
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