Tbone4432

I'm sure a number of you know what I'm talking about when I say there is one bolt that does not fit in the flange because the bend in the pipe is too tight...any advice?

Thanks guys, Todd

'75

Try to start that bolt with the header loose and slightly pulled away from the head.

REELAV8R

#2 I believe was my issue. I dimpled the pipe carefully with a ball peen hammer. That''s using stage 8 bolts. With regular hex bolts you may need to grind down the flats on the bolt head to achieve a smaller hex as well.

Flyinace3

These worked for mine without and mods

Brand:ARP
Manufacturer's Part Number: 400-1110
Part Type:Header Fasteners
Product Line:ARP Stainless Steel Header Bolts
Summit Racing Part Number:ARP-400-1110
UPC: 672036013202
Fastener Style: Bolt
Thread Size: 3/8-16 in.
Head Style: Hex
Underhead Length (in): 1.000 in.
Underhead Length (mm): 25.00mm
Fastener Material: Stainless steel
Fastener Finish: Polished
Quantity: Sold as a set of 16.
Notes: 5/16 in. wrench head size.

blue427

why not just put a stud in that hole? Pre measure it and make it as shot as possible,then put a nut on the stud.They also make nuts with a smaller outside dia.

grumpy10956

hi guys , can someone post a picture of the flange , I am trying to id a set of side pipes they may be Hookers , many thanks, grumpy