Re: [BaadAssGremlins] Re: Adding extra 3/8 head bolts/studs on a 401 block INFO needed

[Davis Martin <martin-davis@xxxxxxxxxxxxx>]

Joe,

 They do go into the cooling passage. You have to use RTV when installing them. I like the idea of a block of wood as a backer and the head as the template to drill the holes in the ROL gasket. Are you going over 11to 1 compression? Unless that is the case you really have no need for all the extra work and expense of the extra bolts.

 Davis

jgray_55 <jgray_55@xxxxxxxxx> wrote:

Davis..Thanks alot!! Now...besides INDY copper head gaskets does
anyone make em with the extra holes? How difficult are the holes to
drill/punch into ROL gaskets? How deep do you drill..looks like will
go into the coolant passage? Thanks,Joe--- In
BaadAssGremlins@xxxxxxxxxxxxxxx, Davis Martin
wrote:
>
> Locating them is easy. Just bolt on your heads and drill thru the
holes in the head. If your machine shop is competent they should have
no trouble figuring out the rest.
> Davis
>
> Joe wrote:
> OK. My 401 short block is in the shop getting
> bored,balanced...etc. It's a block assy i bought from
> a fellow i've never used.Just found out today it needs
> decked also.Always something unexpected! Now...i
> already have a set of INDY SR complete kit street
> aluminum heads for it. WHERE do i locate
> info/schematics...etc on adding the extra 3/8" head
> bolts to the lower edge of the 401 block?? Where in
> the @#$#$% do you get 3/8" head bolts and washers for
> the aluminum heads? I have the complete SR 401 INDY
> head kit...came with ARP head bolts and washers. INDY
> catalog states..."heads can be drilled for extra 3/8
> head bolts". BUT...nothing about the 3/8 bolts are
> listed in the INDY parts book i have?? What ##, where
> do you get them? Can i use STUDS micxed with the ARP
> head bolts that came with the kit? ?? Also..HOW DEEP
> do you drill/tap the block? Need dimensions of the
> bolts,washers?? I have to take my heads in tomorrow so
> they can drill them out. ALSO..where do you get head
> gaskets with the extra holes?? Do you have to modify
> them yourself? I already have a set of ROL hi-perf
> head gaskets.Please email me direct with the info!!
> THANKYOU ,Joe
>
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