243 Heads Question
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Teching In
Joined: May 2013
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From: MN
243 Heads Question So I am in the process of pulling off my 241 heads because some idiot who owned the car before me broke off a manifold bolt in the head. This is leading me to the option of buying some 243 heads since I'm already pulling them and how convenient it is that there are some 2003 Corvette 243 heads on CL.
I am curious to know if these will directly fit or not. I know they will work with the stock cam, but is anything else different?
Also, if I decide to buy these, who should I send them in to port&polish them?
Link: https://minneapolis.craigslist.org/d...412450678.html
I am curious to know if these will directly fit or not. I know they will work with the stock cam, but is anything else different?
Also, if I decide to buy these, who should I send them in to port&polish them?
Link: https://minneapolis.craigslist.org/d...412450678.html
I did this just not too long ago and did heads only on my car (stock cam) because of emissions and stock tune. Mine are 779 heads (same as 243) but are ported and upgraded springs/push rods. I paid for labor so may not have been worth it but the worked heads DO make a difference . Lower RPM they are about the same as stock heads but as you get up to speed they do make a difference and at top end and keep on going 
even with a stock tune and stock cam. It is kind of a sleeper as it hauls when I stomp on it. Not as good as heads and cam, but pretty good for a stock car.
Since you are doing the install yourself I would get them worked if you can afford it. Do the push rods while your in there. That's my .02.
even with a stock tune and stock cam. It is kind of a sleeper as it hauls when I stomp on it. Not as good as heads and cam, but pretty good for a stock car.Since you are doing the install yourself I would get them worked if you can afford it. Do the push rods while your in there. That's my .02.
Yeah no doubt, but if it were me i'd still want to get them ported and polished since i'd be going to all the hassle. I mean what's a stock 243 to a 241...maybe 15-20 hp or so? I'd rather get more like 40-50 hp myself
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Teching In
Joined: Jun 2008
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From: Alexandria, VA
Broken bolt Unrelated to your question I had the same prob with a broken manifold bolt. Mine was on cylinder 1. After I inspected it i noticed only the head of the bolt broke off and it still had about 1/2 in sticking out after I removed the manifold. With alot of patience, PB blaster and vice grips I was able to get it off.
Thread Starter
Teching In
Joined: May 2013
Posts: 45
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From: MN
Unrelated to your question I had the same prob with a broken manifold bolt. Mine was on cylinder 1. After I inspected it i noticed only the head of the bolt broke off and it still had about 1/2 in sticking out after I removed the manifold. With a lot of patience, PB blaster and vice grips I was able to get it off.
