General LSX Automobile Discussion - Head ???
08-02-2012, 06:15 PM
Dumb question here but are all the LS heads the same diamentions on the outside? I havea ls1 block and need some heads for mock up purposes. The
ls1 heads are cheap but i am going to be running a LSX block with LS7 heads and just want to be sure all the outside specs are the same!
08-02-2012, 06:32 PM
I dont know about the outside, but i know the ls7's are not cathedral like the ls1 heads.
08-02-2012, 10:08 PM
I know all the ports and valves sizes are different just did not know if the physical size is different so i dont mock something up with say a LS1 head and use a LS7 head that a different size.
08-03-2012, 02:17 AM
Someone correct me if I'm wrong but I believe ls7 heads have a thicker deck making them a tad taller. Not sure if it would be enough to make a difference in your mock up or not.
08-03-2012, 02:18 AM
I know my ls3 heads are identical to my ls1 heads aside from the valves and ports. But I've never pissed around with ls7 heads tho.
08-03-2012, 01:18 PM
The ports are different and thus the bolt pattern is different enough to prevent a ls1/2/3/6 intake from fitting. The heads are a little taller if sitting on the deck.
08-03-2012, 09:11 PM
may be easier to hop on the vette forums and ask around.
08-03-2012, 10:25 PM
From what I read all the heads are the same bolt pattern even the 6bolt but the valve sizing and port type dictate the bore and intake needed. I have not seen the stock LS7 heads are thicker but this is why I'm asking! I know the aftermarket heads are thicker but don't know if that affects the overall height.
vBulletin® v3.7.4, Copyright ©2000-2013, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO