Header bolts (LT1)

maybe2fast
03-29-2007, 03:50 PM
http://store.summitracing.com/partdetail.asp?part=ARP%2D400%2D1209&autoview=sku

let me know if these are right for the aluminum LT1 head and if these are what you guys recomend. thanks

seawolf06
03-29-2007, 03:59 PM
I think you'll have to custom make a 12-point wrench to work on those bolts. Not impossible, but the hex head bolts might be easier. Otherwise those look correct.

6SpdLT1Z
03-29-2007, 05:13 PM
I went with Stage 8 Locking 1"

maybe2fast
03-29-2007, 06:43 PM
but 1" is needed?

6SpdLT1Z
03-29-2007, 06:48 PM
but 1" is needed?

depends on the flange thickness.... anything 3/8" or thicker needs 1" IIRC.

2000GTP
03-29-2007, 06:49 PM
depends on the flange thickness.... anything 3/8" or thicker needs 1" IIRC.

I agree, the flanges on the Pacesetters are kind of thick. I originally had 3/4 inch ARP header bolts but they just didn't feel like they had enough bite so I swapped them for 1" bolts instead.

danhr
03-29-2007, 06:54 PM
I think you'll have to custom make a 12-point wrench to work on those bolts. Not impossible, but the hex head bolts might be easier. Otherwise those look correct.

how do you figure? I got my breslin's in with a 12 point wrench no problem. They were actually a lot easier then the 6 points, because I could make a longer rotation.