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 Post subject: tips for engine swap?
 Post Posted: Thu Apr 02, 2009 10:57 pm 
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Joined: Thu Mar 05, 2009 1:12 am
Posts: 3
Location: Willow Springs
i am begining a swap on my 99 rcsb silverado from the 5.3 and 4l60e to a big block and a th400... i was just wondering if anyone had tried to put a gen 4 big block into a LS-1 type engine bay, and what problems you encountered, of course i wont be using the electronics, but any info on motor mount, trans mount locations if it will even fit or am i going to have to cut the firewall ect....... thanks big T

:bringit: :bringit: :bringit: ON


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 Post Posted: Fri Apr 03, 2009 1:02 am 
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Joined: Sat Feb 14, 2009 1:47 am
Posts: 73
Why not just build a big inch LS based motor? In a direct comparison GM's 454 LSX LS based motor made more power than thier 572 BBC.


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 Post Posted: Fri Apr 03, 2009 6:37 am 
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Joined: Mon Feb 16, 2009 7:36 am
Posts: 81
Location: Springfield,Mo
Or even a 6.0L or LS2 or LS3 :peel:

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 Post Posted: Fri Apr 03, 2009 8:15 am 
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Joined: Wed Feb 18, 2009 6:16 pm
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Exactly.. you can get more HP out of an LSX engine with half the weight.... dont go screw it up


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 Post Posted: Fri Apr 03, 2009 8:06 pm 
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Joined: Fri Feb 13, 2009 9:25 pm
Posts: 268
Location: Ozark Mo
GRFMotorsports wrote:
Exactly.. you can get more HP out of an LSX engine with half the weight.... dont go screw it up

Fergy, where you been hiding? I totally agree with you. Unless this guy already has a big block sitting on the floor next to the truck, I think he should look at what he already has.

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