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Intake Manifold Question [message #116698] Sat, 26 February 2011 19:24 Go to previous message
JShot is currently offline  JShot   United States
Messages: 485
Registered: October 2006
Location: NW Ohio
Karma:
Senior Member
Our 455 intake manifold was bolted down with 12 bolts - 9 long and 3 short ones. Also, the bolt heads had different markings - a few were grade 8 and some were grade 5.

Should all the bolts be the same length, or are 3 of them short because of the thickness of the manifold at those points? And if I replace all of the bolts with new, is grade 5 ok?

Thanks,
John


John Shotwell
Ridgeville Corners, OH
78 Royale Center Kitchen
 
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