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need help 427 lsx build c5 help

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Old Sep 2, 2016 | 01:57 PM
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Default need help 427 lsx build c5 help

hey guys im really needing some help with my 427 lsx ls7 build
that im putting together for my c5
first off heres my set up to be clear on what i have: car is a 2002 electron blue c5 coupe
motor is a 427 lsx standard deck.
heads are gm lsx ls7 style heads with fast ls7 102 intake
motor is already in the car
purchased a ysi kit for c5 corvette
my car didnt come with any brackets as far as accesory drive is concerned so i bought everything new from gm
purchased 03-04 style ls1 ls6 power steering bracket as recommended
by a&a for forced induction applications new power steering pump for c5 vette and i installed 8 rib innovators west lsx vette crank pulley.
everything is converted to 8 rib pulleys blower and regular drive are all 8 rib everything is new
my dilemma is nothing lines up on the power steering side
power steering is too far out and alternator is too far back

blower doesnt seem to line up too well like its too far back
looked up part numbers etc and all a&a kit is for c5 so that is correct

i dont know if maybe i need to run the c6 kit instead cause of my motor or if im doing something wrong this is my first lsx block build
and my first time using ls7 style parts
i had to flip tb to face driver side and space out my power steering reservoir so that is not an issue any more but fitment is off on everything . i can post pics when i get off work but does anybody have a clue as to what my problem is or point me in the right direction
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Old Sep 5, 2016 | 10:43 AM
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Old Sep 5, 2016 | 10:46 AM
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Old Sep 5, 2016 | 10:46 AM
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these are size of spacers for blower

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Old Sep 5, 2016 | 10:47 AM
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Old Sep 5, 2016 | 10:47 AM
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any help is appreciated trying to figure this all out
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Old Sep 5, 2016 | 10:52 AM
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basically the alternator is too far back, power steering is to far forward
and blower belt even though is the recommended size for the 2.85 pulley wont reach the blower pulley wont its wrapped around crank routing to blower ( planning to go flip drive ) i also see belt hitting water pump neck ( thats without sliding tensioner installed )
was trying to test fit everything before i move on to next part of blower install hit a road block with all of this stuff no idea what the issue is or if my ls7 heads are issue or if the lsx is the issue etc all is in a 2002 c5
ysi kit is for c5 ls1 ls6 cars everything matches pics in kit from a&a and has c5 a&a part numbers brackets are new pulleys are new etc

if anybody has ran into similar issues with lsx or ls7 stuff on a c5 what brackets did you run or how did you get belt on ysi kit my ysi kit and brackets , power steering bracket is all for ls1 ls6 c5 corvette
motor is lsx standard deck with ls7 heads .60 cometic head gaskets etc im at 9:5 compression with said gaskets

Last edited by Torque_BlueDevil; Sep 5, 2016 at 10:55 AM.
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Old Sep 5, 2016 | 11:09 AM
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I run a LSX block and mast ls7 heads and all my stuff lines up perfectly using either a stock alt/power steering bracket or a Holley one.. I run the Holley bracket though because it accepts truck alternators, 250amp units are like $150 vs being limited to the stock expensive alternators or the really expensive aftermarket ones.

My advice would be to put all the stock pulleys back onto the power steering/alt side and use a secondary drive vs doing a full 8 rib. I did that in the past and actually snapped the power steering/alt bracket. It was too much load for it. Just keep the 8 rib to the blower itself. Also be sure your crank pulley is all the way on as it's the only one that can't be adjusted. Both the power steering and alt can be adjusted, power steering has a huge amount of adjustment in it.

Last edited by TTBlueZ06; Sep 5, 2016 at 11:10 AM.
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Old Sep 5, 2016 | 11:21 AM
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i am in process of doing the second drive but didnt order it just yet since nothing was lining up on the power steering side from bracket to the alternator and power steering itself its crazy how far off the alternator is from the power steering
the crank is all the way on i had shop install balancer and pin the crank with innovators west kit and torqued everything down i double checked it before i dropped motor in which is why i didnt give it any second thought on the rest of the belt drive then i got to installing everything and when bracket got in from dealer ( 03/04 bracket) i installed everything the pump is also new installed all pulleys , bracket etc put blower on and ran into all these problems so i put the secondary drive ( flip drive ) order on hold till i could figure this out i dont want to dump more money into something i havent quite figured out yet ( i was like huh should i be running the ls7 brackets and accesories? or c6 brackets on blower with c5 kit ? i also attempted to run belt on blower from balancer through both 8 rib pulleys on blower bracket up to blower pulley ( with sliding tensioner completely off ) and belt wouldnt reach blower pulley and from under car i could see it was also touching water pump neck
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Old Sep 5, 2016 | 11:24 AM
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how can i adjust the alternator , power steering pulleys etc on that side to line up
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Old Sep 5, 2016 | 11:29 AM
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as far as spacers for the blower are those correct length spacers for the 8 rib or do i have to order diff sized spacers

i had a vortech v2 on car before that was air 2 water on the ls6 motor that was in car it was nothing like this on install
so i dont have much experience with this blower bracket set up

i wanna figure all this out on the blower install , belt drive before i get to installing the dewitts lowered radiator with spahl fan set up and continue with the piping and air dam install for it

Last edited by Torque_BlueDevil; Sep 5, 2016 at 11:30 AM.
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Old Sep 8, 2016 | 01:55 PM
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found out what it was it was on back of bracket grinded edge of bracket down and it fit flush
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Old Sep 8, 2016 | 03:24 PM
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my LSX block and mast heads required some work on the alternator bracket to get it all perfect, but not much.

calibrated laser tool and proper micrometer (not tape measure) was critical
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Old Sep 8, 2016 | 06:25 PM
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Where was it hitting? I'm having a few issues with my iron 6.0 block and flip drive.
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Old Sep 12, 2016 | 03:42 PM
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on a freeze plug under /next to water pump on driver side
fixed that issue now that lines up together
but my balancer apparentely isnt all the way on thanks to the double roller timing set spacing everything out and manley oil pump being spaced out the balancer is touching that and not going back anymore
i removed my rack and pinion and everything from front of motor gonna pull the balancer and look for someone to machine it anybody have previous experience with this issue i found alot of posts on it here so its common
i have the innovators west 8 rib 8 in balancer and the manley pro flo high pressure oil pump with provided spacers and billet double roller timing set installed on lsx

Last edited by Torque_BlueDevil; Sep 12, 2016 at 03:45 PM.
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