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On a 95 3100 SFI i am changing the heads to a set of 1998 just wondering if you have to change the head bolts.To change the heads.Not sure if there the ones that stretch and are only good for one tourque.Thanks
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1995 Cutlass Supreme 3100 SFI
Cold Air K&N Filter
58mm TB
Dynomax Duel Exhaust with Performance Catalytic Converter
FFP Underdrive Crank Pulley
1/4 mile 15.65 at 90.8 mph -
You don't NEED to change them, but it is a VERY good idea to change them because they do in fact stretch.-Brad-
89 Mustang : Future 60V6 Power
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Follow the build -> http://www.3x00swap.com/index.php?page=mustang-blog -
it is highly recommended to change them as they are a torque to yeild bolt..
but i know countless people (and have done it myself many many times) who have reused them. however its best to replace them if you can.Colin
92 Sunbird GT, 3200 Hybrid 13.99@ 95.22 (2004)
90 Eagle Talon TSi AWD 10.54 @ 129mph.Comment
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if you have the money, and you want this engine to last for a long time... pay the $35.
if this is a temporary build, or if you dont care... reuse. Id suggest getting a tap to clean out the headbolt holes M11x1.25? something like that.. and coat both the threads and undersides of the bolt heads with engine oil.I modify stuffComment
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