Porting LS1 Heads
TECH Enthusiast
Joined: Jan 2008
Posts: 504
Likes: 0
From: Michigan
I dont but have you considered getting some budget heads like patriot some 243 heads you can pick up for just over a grand with nice springs retainers and valves? Just my 2 cents just seems like a waste to mess with the stock heads unless its a money issue but if thats the case I wouldent even bother.
hello, i agree with last post. you can get budget heads from TSP , PATRIOT, or livernois for like $900 to 1k. why would you pay $500 plus to port yours? you'll get higher flow from mild 243 ls6 heads than your stockers. just my 2 cents. i love my budget heads, just wish i went with a slightly bigger cam 
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Verdad Gallardo TECH Enthusiast
Joined: Jan 2008
Posts: 504
Likes: 0
From: Michigan
I dont think its worth the cash to mess with the 241 heads if it was then you would see a aftermarket for them their is no way your going to get as much of a preformance gain of of the 241 heads compared to a built after market head.
Your only talking about 500 or so more for the head,either way you have to get new bolts gaskets and fluids so no extras their.
I would say you have to ask yourself is 500 worth a head that will out preform the stock head no matter what you do to it? It is for me hell, 500 bucks more, I spend more on tires. Hell you could spend 200 or more buck on a MAF that maby gives you 5hp same thing with an under drive pully.
Your only talking about 500 or so more for the head,either way you have to get new bolts gaskets and fluids so no extras their.
I would say you have to ask yourself is 500 worth a head that will out preform the stock head no matter what you do to it? It is for me hell, 500 bucks more, I spend more on tires. Hell you could spend 200 or more buck on a MAF that maby gives you 5hp same thing with an under drive pully.
Maybe some people don't have $1000 to drop on heads but they DO have $350. What else can you do to your car for $350 that will gain 30-40 hp?? If you have the money down the road to buy aftermarket heads then by all means, do that, then turn around & sell your ported stockers & get most if not all of your money back.