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#1
09-27-2008, 11:10 PM
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oil pan clearance
How much of a gap should there be between oil pan and cross member?
I just stabbed the original 400 block into my '68 f-bird. I'm using the same motor mounts as I used on the '74 455 block I just pulled out. I did use a new oil pan from http://www.pro-touringf-body.com/engine.html - It was a stock pan that had trap doors added- Same mounts Same car - Different block and diff oil pan. The pan is sitting very very close to the cross member. The mounts are good. It's almost like I need an 1/8th" spacer under the mounts. - I'm not yanking the engine back out. Am I missing something? 
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#2
09-27-2008, 11:21 PM
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in my 67 bird with new mounts there is probably 1/4" of clearance, when i took the motor out previously the mounts were worn and it was close enough to rub off the paint but not dent the pan. i never noticed any noise or vibration that i would attribute to the pan hitting the frame
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#3
04-03-2009, 08:32 AM
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It appears I have the same problem with my 67 bird. New motor with 72 block, oil pan is hitting the frame. New mounts & oil pan were installed, so I'm thinking one of those 2 items is the issue. Thoughts?
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 67 Firebird Convertible - SOLD 80 Firebird Formula Turbo |
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#4
04-03-2009, 01:27 PM
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My first 455 with brand new mounts actually was rubbing on the frame. That was a Canton pan. We have now put on a factory pan and I have more than 1/4" of clearance now.
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Skinned knuckles and empty wallet! Could I be any happier? 66 GTO Convertible. LS3-525 HP. Legend LGT700 5-speed, Wilwood 4-wheel disc brakes, Ridetech coil over front susp, PMT rear susp, Hotchkis bars, Billet Specialties 18" Dagger's (18X9 rear, 18X8 front). 2002 Ram Air WS.6 convertible Trans Am. Wife's car. |
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#5
04-03-2009, 06:30 PM
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Yup, going back to the original stock pan. Looks like it's going to work.
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67 Firebird Convertible - SOLD 80 Firebird Formula Turbo |
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#6
04-03-2009, 10:35 PM
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clearance
FWIW I run a Canton pan in my bird with good mounts and it is tight. There is a recess in the crossmember that is hard to see when the engine is in the car. The pan kind of sits down in this and I think the other pans are a little wider in this area. Nice beefy pan though, 41/2 years now and no problems. Price to pay for a muscle car ( tight to hood and cross member) big motor in med size car?
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MudBird |
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