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 Post subject: ls head with gsr block
PostPosted: Sat Jan 19, 2008 11:21 am 
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i was thinking with the ls head and a gsr block crank and rods with a little port n polish on the head and we got a safe 9000 rpm ls right?


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PostPosted: Sat Jan 19, 2008 11:58 am 
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yea sure except the ls head will not flow as well as the gsr or b16.

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PostPosted: Sat Jan 19, 2008 12:13 pm 
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well i am a non vtec enthusiast and i under stand the ls head does NOT breath as well as a vtec but like i said build the head some and all shall be good right?


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PostPosted: Sat Jan 19, 2008 12:33 pm 
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Just doesnt sound like a good move, but do it and dyno it.

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PostPosted: Tue Jan 22, 2008 6:57 pm 
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better than an ls by far.

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had to change the game up. sorry.
91 DA teg.
ls bottom/b16a2 head.
pr3 pistons, itr cams.
a.e.b.s intake manifold.
kyb struts, onsoku coils.
cross drilled rotors, ebc pads


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 Post subject:
PostPosted: Tue Jan 22, 2008 7:18 pm 
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da6jdmteg wrote:
better than an ls by far.


How so, because I don't even think in stock form a GSR block w/ a stock LS head will make anywhere near a STOCK LS would...

The benefits of the higher revving GSR block will be canceled out by the shit-for-flow LS head. Not only the flow of he head but the shorter stroke there goes all the low end torque of the LS.

I also see oiling problems.

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 Post subject: Re: ls head with gsr block
PostPosted: Mon Feb 04, 2008 1:28 pm 
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this i have done before about 2 years ago and wish i still had it. oiling problem. vica versa of ls vtec. get a tap the size of the vtec oil whole. tap it shut. opposite of tapin a vtec head for the non vtec block. for oil thats all i had to do. no oil leaks. used the oil cooler and all. to me were the difference came in power was from the higher compression of the pistons. i ran b18c1 bottem end with a 96 ls head and a 92 gsr tranny (b17). that was in my 91 DA. i have a friend with 2 gsr's. one with the b17 the other is 94 up. i beat his b17. (by little his bumper was beside me. may not have been running right.) but of course not the DC. i beat lots of ls's with it. so i took it that it was better than ls by far.

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had to change the game up. sorry.
91 DA teg.
ls bottom/b16a2 head.
pr3 pistons, itr cams.
a.e.b.s intake manifold.
kyb struts, onsoku coils.
cross drilled rotors, ebc pads


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 Post subject: Re: ls head with gsr block
PostPosted: Tue Feb 05, 2008 9:26 am 
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LS head with a GSR block is a really good idea if you want to shoot rocker arms at people! lol ... It will be a good combo as long as you don't plan on revving to 9000rpm. I had a built crower head with ferrea valves and i stripped the rocker arm adjusting nut off when it over-revved to 9600. I'm sure there were other factors such as the speed at which it reached that rpm but still. My heavily built head and block only made power to about 8400rpm ... the gsr bottom end isn't really gonna change that. You're limitted by the LS head's flow.

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 Post subject: Re: ls head with gsr block
PostPosted: Wed Feb 13, 2008 9:54 pm 
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better off just going gsr with a mild build

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 Post subject: Re: ls head with gsr block
PostPosted: Fri Feb 15, 2008 9:17 am 
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Yeah, in theory it would be a better setup, because the GSR block is better etc...but look at the cost of building up an LS head with all the higher-rev components (valves, springs, retainers, cams, pnp...) and you will have spent 2X or 3X the cost of a stock GSR or B16 head and make similar power on the same bottom end.


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 Post subject: Re: ls head with gsr block
PostPosted: Wed Mar 05, 2008 7:44 am 
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In the process of this awful concoction you are losing the only reason people want LS/Vtec's ion the first place, the stroke. what you gain in compression from the pistons, you will lose from the lack of stroke and the round combustion chamber. By the way the compression won't be exactly the same as a GSR because of the combustion chamber, GSR's have an oval combustion chamber which drive compression up. I love the concept of work with what you've got but if you're going to build a nonvtec head and you have a GSR block, why not take the pistons, water pump, and oil pump(depending on which year LS block you have;Newer B-Series are all the same) and put them in the LS block with your newly built head. That would be pretty safe to rev to around 8K or so I would think. I did a compression calculator on this setup and it yields way less than the effort is worth.

B18A/B head+GSR Block & pistons=9.4:1
B18A/B head+GSR Pistons in LS Block=10:1

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 Post subject: Re: ls head with gsr block
PostPosted: Tue Mar 18, 2008 3:56 pm 
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save your money and get a k20 cant beat it for the power to price ratio now.

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 Post subject: Re: ls head with gsr block
PostPosted: Sat Apr 12, 2008 8:24 pm 
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b series all the way :D :D

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had to change the game up. sorry.
91 DA teg.
ls bottom/b16a2 head.
pr3 pistons, itr cams.
a.e.b.s intake manifold.
kyb struts, onsoku coils.
cross drilled rotors, ebc pads


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