Q about '241' heads
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From: Grand Rapids, Mi.
Q about '241' heads Can anybody here tell me with any degree of certainty whether the '241' cylinder heads used on '00-'02 F-Body's and '03 and earlier Vettes were identical to those used on my version of the LS1 (04 GTO)? I'm particularly interested in whether the engine accessory (ie. power steering pump) mounting bolt holes, etc. are the same.
I'm looking to find a good used set of 241's that I will send to my local performance engine shop for machine and port work before installing in combo with a cam. I'd like to find a 2nd set, so that I can have them prepped ahead of time and the job becomes just a head/cam swap. Besides, by keeping the factory original set, I can always put it back to stock, should I decide to.
Do I need to find a set from an '04 GTO, or can I use a set from earlier Camaros, Firebirds, and Vettes?
Thanks for any advice you may offer.
I'm looking to find a good used set of 241's that I will send to my local performance engine shop for machine and port work before installing in combo with a cam. I'd like to find a 2nd set, so that I can have them prepped ahead of time and the job becomes just a head/cam swap. Besides, by keeping the factory original set, I can always put it back to stock, should I decide to.
Do I need to find a set from an '04 GTO, or can I use a set from earlier Camaros, Firebirds, and Vettes?
Thanks for any advice you may offer.
i would think that 241s from a '00 F-body would be the same as 241s from an '04 GTO.
i have heard that some of the 241s were cast using a different method, but there should be basically no flow difference between them.
you might want to look into a 243 casting (LS6/LS2), it might be better for what you have in mind, and Patriot is have a pretty good deal on them until labor day.
i have heard that some of the 241s were cast using a different method, but there should be basically no flow difference between them.
you might want to look into a 243 casting (LS6/LS2), it might be better for what you have in mind, and Patriot is have a pretty good deal on them until labor day.
Yeah, the patriot deal would be about as much as decent machining and what not. And that way you still have your stock heads and are paying the same amount of money for a quality product. 
they are identical, all 241s are the same head
its a casting # the castings are the same
its like 243 heads, they are all the same, just that LS6 243s have diffrent valves than LS2 243s, heads are the same.
its a casting # the castings are the same
its like 243 heads, they are all the same, just that LS6 243s have diffrent valves than LS2 243s, heads are the same.
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On The Tree
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From: Grand Rapids, Mi.
Originally Posted by Cop Car
they are identical, all 241s are the same head
its a casting # the castings are the same
its like 243 heads, they are all the same, just that LS6 243s have diffrent valves than LS2 243s, heads are the same.
its a casting # the castings are the same
its like 243 heads, they are all the same, just that LS6 243s have diffrent valves than LS2 243s, heads are the same.
I was just worried about the bolt holes, etc. for engine accessories being identical. Figured that was more about the machining process after they've been cast.
I'd hate to buy a set of '241's' from an earlier model, take them to have them machined, ported, polished, assembled, etc. then go to do the swap only to find out my powersteering pump mount doesn't line up....GRRRR!
Just trying to think ahead! Maybe I'll just go with a set from a GTO, that way I don't have to worry about it. Enough GTO owners are doing head swaps and the 241's are common and seem to have fallen out of favor enough that I should be able to P/U a set pretty reasonable!
Thanks All!
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Yes, a set of 241 heads off a '01-'02 f-body will be identical to the original heads off your '04 GTO. They changed the heads to the 243 castings in the '05 GTO's when they got the ls2 in them. Everything should bolt up the same as your heads.
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