GM's LSX & World Warhawk
11-04-2007, 04:22 PM
#1
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GM's LSX & World Warhawk
At SEMA last week, talked to one of the GM guys in the GM Performance display, asked him about compatibilities regarding the extra cylinder-head hold-down bolts, between GM's LSX and the World Engines Warhawk.
He indicated the exhaust side bolt holes aren't a problem, but the intake-side extra bolt holes are in different locations, different style also.
The key difference for the extra intake-side bolt holes is that on the GM block, the bolt hole is located in the block deck surface. On the Warhawk, the extra hold-down bolts is in the lifter area, so that there's an inch-or-so air gap between the cylinder head deck and the block bolt-hole threads.
In the GM head, the bolt holes in the cyl hd are blind, apparently in the Warhawk head, they go into intake runners.
The GM guy indicated that "upon request", World Engines would drill their cylinder heads to match up with the GM block bolt pattern.
On the GM head, you use a stud on the underside of the cylinder head (cyl hd deck), which then goes through the drilled head-bolt boss cast into the block. A nut is then attached on the under-side of this tab, threaded onto the stud through a casting window in the manifold valley, and torqued down. This is similar to how it was done on the BBC ZL1 blocks and the extra cyl hd hold-down bolt in the lifter valley.
After looking at the pictures posted on the respective web-sites, this is apparent, in retrospect.
It seems there were more LS-motored cars at SEMA than SBC's. so many LS-powered 69 Camaros. It also seemed all the Z06 vettes were there to showcase somebody's product or wheel. no wonder they're in short supply.
He indicated the exhaust side bolt holes aren't a problem, but the intake-side extra bolt holes are in different locations, different style also.
The key difference for the extra intake-side bolt holes is that on the GM block, the bolt hole is located in the block deck surface. On the Warhawk, the extra hold-down bolts is in the lifter area, so that there's an inch-or-so air gap between the cylinder head deck and the block bolt-hole threads.
In the GM head, the bolt holes in the cyl hd are blind, apparently in the Warhawk head, they go into intake runners.
The GM guy indicated that "upon request", World Engines would drill their cylinder heads to match up with the GM block bolt pattern.
On the GM head, you use a stud on the underside of the cylinder head (cyl hd deck), which then goes through the drilled head-bolt boss cast into the block. A nut is then attached on the under-side of this tab, threaded onto the stud through a casting window in the manifold valley, and torqued down. This is similar to how it was done on the BBC ZL1 blocks and the extra cyl hd hold-down bolt in the lifter valley.
After looking at the pictures posted on the respective web-sites, this is apparent, in retrospect.
It seems there were more LS-motored cars at SEMA than SBC's. so many LS-powered 69 Camaros. It also seemed all the Z06 vettes were there to showcase somebody's product or wheel. no wonder they're in short supply.
11-09-2007, 01:05 AM
#4
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Re: GM's LSX & World Warhawk
89RSRagTop:
care to elaborate on which part is wrong? are you referring to the "upon request"...?
just wondering, could be that maybe I transcribed my thoughts in error. I was trying to recollect all the details of a dialogue that occurred a week ago, quite a few beers ago. brain cell damage occurs.
The GM guy is wrong.
just wondering, could be that maybe I transcribed my thoughts in error. I was trying to recollect all the details of a dialogue that occurred a week ago, quite a few beers ago. brain cell damage occurs.
11-09-2007, 06:43 PM
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Re: GM's LSX & World Warhawk
89RSRagTop:
care to elaborate on which part is wrong? are you referring to the "upon request"...?
just wondering, could be that maybe I transcribed my thoughts in error. I was trying to recollect all the details of a dialogue that occurred a week ago, quite a few beers ago. brain cell damage occurs.
care to elaborate on which part is wrong? are you referring to the "upon request"...?
just wondering, could be that maybe I transcribed my thoughts in error. I was trying to recollect all the details of a dialogue that occurred a week ago, quite a few beers ago. brain cell damage occurs.
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