Custom Engine Builders
02-21-2013 | 12:59 PM
#73
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Joined: Jan 2006
Posts: 3,867
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From: St. Pete Beach, FL
Imo The LS will shine in up some 30 foot singles and Maybe up a to 38 in twins. Beyond that to make a single speed transmission set up work you really need more torque. Two speed marine transmissions are too rpm limited cause they were designed around diesels, Now if you turbo them, I think you can stick with a bbc to 1200 hp. (1000hp is probably more realistic though) Past that You are going to need an aftermarket LS block and 6 bolt heads other wise, you will lift the heads in a boat environment, And the turbos are going to get too big to bring in boost fast enough to make the torque down low that's needed(you can get away with more for short
I don't generally like the idea of forced induction LSX's due to their lack of head bolts, but maybe that theory has been debunked.
02-21-2013 | 01:31 PM
#74
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Joined: Aug 2010
Posts: 659
Likes: 3
From: Brooklyn Park, MN
Yes a glide can be set up direct drive and the parts are off shelf stock car stuff, also it can be built as a shorty and would be about the same length as a BW72c but, there are no decent ratios. first gear is too low, reverse is two low as well. LS four bolts will hold fine up to an easy 800hp. There are ways to go way further than that if needed. studs Help, some aftermarket head castings are thicker which is really the problem. (All the GM castings are thin)
02-21-2013 | 01:36 PM
#75
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Joined: Nov 2006
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From: St clair Shores Mi
I've been contemplating this transmission idea. I wonder if it be possible to repurpose a powerglide and remove the TC to make it direct.
I don't generally like the idea of forced induction LSX's due to their lack of head bolts, but maybe that theory has been debunked.
I don't generally like the idea of forced induction LSX's due to their lack of head bolts, but maybe that theory has been debunked.
02-21-2013 | 03:55 PM
#77
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Joined: Jul 2008
Posts: 206
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From: Chagrin Falls, Ohio
I've been contemplating this transmission idea. I wonder if it be possible to repurpose a powerglide and remove the TC to make it direct.
I don't generally like the idea of forced induction LSX's due to their lack of head bolts, but maybe that theory has been debunked.
I don't generally like the idea of forced induction LSX's due to their lack of head bolts, but maybe that theory has been debunked.
My current engine with the actual "LSX" block has additional head bolts and extra cooling features.
02-21-2013 | 08:19 PM
#78
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Joined: Nov 2006
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From: St clair Shores Mi
I was running around 14psi through a whipple blower on my totally stock LQ4 for around 30-40k miles with zero problems before changed my setup. I've seen plenty of FI setups on the LS motors and haven't heard of any real head lifting problems.
My current engine with the actual "LSX" block has additional head bolts and extra cooling features.
My current engine with the actual "LSX" block has additional head bolts and extra cooling features.
02-21-2013 | 08:28 PM
#79
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Joined: Jul 2008
Posts: 206
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From: Chagrin Falls, Ohio
This quad turbo motor built by my engine builder was making over 1600hp at 6psi and had no head lift problems with the LSX block.
Last edited by Bromaguire; 02-21-2013 at 08:36 PM.
02-21-2013 | 09:04 PM
#80
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From: St clair Shores Mi
Last edited by only1adrian; 02-21-2013 at 09:09 PM.
