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couple fast 90 install questions

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Old 11-25-2008, 08:10 PM
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Default couple fast 90 install questions

getting ready to swap to a used fast 90

what valley cover bolts will i need. just a std button head that could be picked up from a hardware store? if you have thread pitch and length thatd be awesome.

also do i just use stock intake manifold bolts and tighten them to stock tq spec?

this is not my first intake swap, i just got rid of a weiand and installing the fast. weiand used diff intake bolts and tq specs
Old 11-26-2008, 07:44 PM
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wow everyone always answers my exhaust has rasp and should i get a bigger maf questions but i ask a tech oriented one and no help
Old 11-26-2008, 07:52 PM
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Originally Posted by dpw41285
getting ready to swap to a used fast 90

what valley cover bolts will i need. just a std button head that could be picked up from a hardware store? if you have thread pitch and length thatd be awesome.

also do i just use stock intake manifold bolts and tighten them to stock tq spec?

this is not my first intake swap, i just got rid of a weiand and installing the fast. weiand used diff intake bolts and tq specs

the fast should come with new bolts.

if not I'm pretty sure they're 10mx1.5x30 dont quote me on that though. I just bought some stainless ones a few weeks ago and I believe that was the size.

the torque specs on the bolts are stock. 44in/lb first pass 89 in/lb second pass.
Old 11-26-2008, 07:55 PM
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Originally Posted by dpw41285
getting ready to swap to a used fast 90
yeah i just called jph and he said its a standard button head 10mm that the hardware store would have, if not he may have an install kit
Old 11-26-2008, 07:56 PM
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thank you for you help jermzz
Old 11-26-2008, 11:02 PM
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This thread says 8x1.25x30 for those bolts:

https://ls1tech.com/forums/generatio...ml#post8116146
Valley cover bolts I used were 8mm x 1.25 x 30mm, Metric socket button head stainless screws. They look nice. Get them here. http://www.boltdepot.com/product.asp...&cm=19&cd=1318 You can just see one in this pic, but you can get the idea of what they look like.
Old 11-26-2008, 11:31 PM
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can't wait to here about your gains. I'm wanting to make the same change, soon.
Old 11-27-2008, 12:42 AM
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Originally Posted by massls1guy
This thread says 8x1.25x30 for those bolts:

https://ls1tech.com/forums/generatio...ml#post8116146
WORD. that sounds more like the size. thanks for correcting me




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