Cadillac CTS-V - Engine swap ?
06-11-2012, 12:17 PM
I'll prob-lee get flamed for this bc of it being a truck motor, and asking this ?, but is there any reason an 2001 LQ4 won't fit in a V1? I know its iron, and it's lower compression, but is there any reason it won't bolt in. Then if it would bolt in, couldn't you use the LS6 top end and a custom cam and have a pretty stout set up?
06-11-2012, 12:44 PM
just curious but what would be your reasoning for using an LQ4 instead of a LS2 or LS3?
06-11-2012, 12:50 PM
Well, mainly bc I have one, and bc I thought that LS2s and 3s have a different crankshaft ring for the crank sensor to read. I don't know for sure about the latter, or if there is a simple fix to it either.
06-11-2012, 03:06 PM
The only way I'm going to approve of this is if you're running high boost levels to it. :devil:
4.8, 5.3, 5.7, 6.0, 6.2, 7.0, etc will all fit the same. An LS block is an LS block as long as its for a rwd app.
06-11-2012, 03:44 PM
Umm double check the dates. The crank changes right around then. The early lq4s have a different crank. The latter ones have a normal crank with a spacer for the flexplate and transmission. The early ones will not bolt up to a 6 speed correctly.
06-11-2012, 03:48 PM
Thanks all for the replies. Didn't know if they would be any problems. I had heard that iron truck blocks didn't have all the accessory bolt holes like alm. car blocks have.
06-11-2012, 03:58 PM
Only bolt hole sometimes missing is one of the alternator holes. Real easy to drill/tap it though. It is on the edge of the block nowhere near oil or water.
06-11-2012, 04:26 PM
Thanks for the reply. So drilling and tapping one bolt hole should be the only non bolt on? The LS6 top end should be a direct bolt on too, I hope.
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