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I seen these on Frankensteins website but can't find any other info on them anywhere else. Would they work with a stock cubed cammed LS3 with a stock bottom end? I wonder how they compare to a set of Frankensteins trick flow 255s or even the Tea version of the 255s
Personally.....I would not run aftermarket heads with a stock cam. You will gain virtually nothing!
Now.....if you were gonna stick in a more aggressive cam, then yeah.....I can see that. Particularly if you mill those heads to bump up the compression a bit.
But Aftermarket head with a stock cam? No. Waste of money.....because the stock heads really are that good, ESPECIALLY when mated with a mild stock(ish) cam.
Personally.....I would not run aftermarket heads with a stock cam. You will gain virtually nothing!
Now.....if you were gonna stick in a more aggressive cam, then yeah.....I can see that. Particularly if you mill those heads to bump up the compression a bit.
But Aftermarket head with a stock cam? No. Waste of money.....because the stock heads really are that good, ESPECIALLY when mated with a mild stock(ish) cam.
KW
He said Stock cubed, cammed.
That being said there was a test done where they put GMPP ls3 heads on an ls3 with a Stock Cam. It gained around 12-13 hp peak. And actually gained power throughout the test range. I’d imagine theses better aftermarket heads would gain more. 15-20 with the Stock Cam
That being said, yet again, the Cam is by FAR the best bang for the buck with the ls3. There aren’t big gains to be had with intakes and heads on a Stock bottom end ls3 when you’re staying within the Stock rpm range . Up to 10 with an intake and 20-30 with heads MAYBE. It’s not until you increase the rpm range of ls3 stuff to 7500+ that you really start seeing big gains with HCI on an ls3. If you want to stay at 6500 ish rpm, you’re limiting yourself but the Stock top end is damn good stuff for that purpose.
Personally.....I would not run aftermarket heads with a stock cam. You will gain virtually nothing!
Now.....if you were gonna stick in a more aggressive cam, then yeah.....I can see that. Particularly if you mill those heads to bump up the compression a bit.
But Aftermarket head with a stock cam? No. Waste of money.....because the stock heads really are that good, ESPECIALLY when mated with a mild stock(ish) cam.
KW
Not running a stock cam. Stock cubed. Running a cam motion 232/244
03-10-2018, 02:23 PM
Anyone ran the Frankenstein 11 degree LS3 heads? 
No. Waste of money.....because the stock heads really are that good, ESPECIALLY when mated with a mild stock(ish) cam.
