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Re: [GMCnet] Thorley Headers [message #197676]

Thu, 07 February 2013 10:19

Edward Jarmul

Messages: 30
Registered: November 2012

Karma: 0

Member

I have a set of Thorleys on both my GMCs, one 455 and the other a 403, and
believe they are the same, at least according to the source I used at the
time (Jack McHaney <jvmchaney@78055.com> - Thorley Headers Kit includes
headers, gaskets, adapters, bolts and a good set of instructions.). If
thats true, the exhaust port size/spacing must be the same for both engines.

EdJ
'73 Glacier 26' 455
'77Coca Cola 26' 403
'69 Vette Coupe
Full Time Martinsburg, WV
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