Carb Intake bolt lengths

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Mar 13, 2010 | 10:41 AM

blazin

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Carb Intake bolt lengths

I have a gmpp carb intake I got used and it didnt have the bolts included. I have been trying to find what size and length of bolts I need? I think its M6x?? I appreciate the input.

Mar 13, 2010 | 11:15 AM

Duffster

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Regular carb studs should be fine. Just depends in your elbow or throttle body or if you've got a spacer in there.

Mar 13, 2010 | 11:18 AM

blazin

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I need the bolts to bolt the intake to the heads

Mar 13, 2010 | 01:16 PM

Duffster

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oh... nevermind. I'm awaiting delivery of my bolts for this EXACT same thing (GMPP intake bolts). If you wait a few days, I can measure them for you

Mar 13, 2010 | 08:12 PM

sixty5hellvell

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I was going to post the same question. I almost bought arp bolts but heard they dont fit on carb manifolds.

Mar 13, 2010 | 08:31 PM

Duffster

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Well, while we wait for either an answer or my bolts to show up. . . what TB are you all using? Elbow with stock or a 4150 style? Pics

???

Mar 13, 2010 | 10:16 PM

sixty5hellvell

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efi?

EFI is not for me. 750 double pumper on a nascar airbox is the route I am taking. Just really dont want to deal with all the wiring.

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Mar 14, 2010 | 05:49 AM

Duffster

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right now, I've got the original bolts coming just didn't get shipped initally w/the intake... Will end up ordering ARPs when I get them after measureing... Will let you know #s when I order and confirm proper sizes...

Mar 17, 2010 | 04:08 AM

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Duffster

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Well, found out looking around today what the Edelbrock intake uses... shouldn't be too far different...

and if I'm right, the M6x1.00 x 50mm is the ARP 670-1007 which runs in 5-bolt packs (need 2 obviously) at about 16.95 with Summit Racing and 13.99 with Jegs (btw, this is the 12-point black oxide bolts...

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Mar 17, 2010 | 06:54 AM

#11

Duffster

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Well crap. . . I did the research while at work and now I am looking at my intake to my left side. . . . 2" (50mm) might be a bit short

I'll figure it out easy now.

I'll drop a 2" bolt down one of the holes... see how much sticks out.
I'll pull one of my stock bolts out of the front of the LS6 and see how much extra there is based on the LS6 intake. The extra from the LS6 will be added to the used on the GMPP and thats our length....... BRB...

Mar 17, 2010 | 07:08 AM

#12

Duffster

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Alright. Extremely scientific testing, precision instruments and a weak-assed flashlight help me conclude I am positive about the 50mm being the correct length. I'm calling Jegs