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#1
11-05-2019, 05:02 PM
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64 Exhaust clearance problem
I put a 66 389 with 093 head in my 64 with factory 64 manifolds. ALL mounts are correct. Drivers side manifold is laying on the rag joint, Any suggestions?
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#2
11-05-2019, 05:27 PM
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I've seen several posts indicating that you can move the engine left or right by loosening the mounts and jacking in the direction you want. Have you tried that? This may solve the problem.
There should be no clearance problem with your 093 heads and log manifolds.
__________________
BONESTOCK GOATS '64 GTO Tripower Hardtop (Wife's Car) '64 GTO Tripower Post Coupe (My Car) '99 Bonneville SE Sedan |
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#3
11-05-2019, 06:34 PM
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clearance
Yes i did do that, it's up as far as it can go on drivers side. I'm baffled .
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#4
11-05-2019, 08:40 PM
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It is not uncommon for the frame to sag up front, especially with engines as heavy as these Pontiacs are. Could also be frame damage from a prior accident.
__________________
The '64 GTO The '65 Chevelle The '69 Chevy Pickup Project The Brazen Orange 2006 GTO |
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#5
11-06-2019, 10:03 PM
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clearance problem
As B-Man said you can't bolt them on wrong. And they are from a 64 LeMans.
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#6
11-05-2019, 08:42 PM
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clearance problem
Never been hit, no sag. Car is solid as a rock
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#7
11-06-2019, 10:05 PM
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clearance problem
The kicker is the motor is level from side to side and has the correct drop back towards the firewall. I'm using the factory trans
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#8
11-05-2019, 08:47 PM
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clearance
This thing was a 6 cyl. car and has manual steering.
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#9
11-05-2019, 09:10 PM
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Could the transmission mount be too tall?
__________________
"I know just enough to keep me here, but not enough to get me out" |
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#10
11-06-2019, 10:39 PM
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clearance problem
???? The motor is sitting in there spot on from left to right and has the correct drop from front to back which in turn lets the oil go to the oil pan sump
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#11
11-05-2019, 09:12 PM
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clearance
No its the right tranny mount. Motor has the correct drop to it
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#12
11-05-2019, 09:21 PM
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Some 1/4” thick spacers under the motor mount frame stands should give you the clearance you need.
__________________
1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
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#13
11-05-2019, 10:14 PM
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How do you discount crossmember sag? A local reputable alignment shop told me this is common to all A bodies & F bodies. How else could this interference be explained?
__________________
BONESTOCK GOATS '64 GTO Tripower Hardtop (Wife's Car) '64 GTO Tripower Post Coupe (My Car) '99 Bonneville SE Sedan |
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#14
11-05-2019, 10:22 PM
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clearance problem
Wouldn't think a 6 cyl would have sag it that much.
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#15
11-06-2019, 09:40 AM
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Quote:
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#16
11-05-2019, 10:38 PM
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A six isn’t that much lighter than some of the small V8s offered in the A and F cars (sb Chevy) so no matter what was mounted between the rails they all sag to some degree.
__________________
1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
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#17
11-07-2019, 06:12 PM
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Quote:
__________________
Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
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#18
11-06-2019, 07:40 AM
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A shorter trans mount may still help. It was common for the drive shaft to hit the tunnel floor, and that was one of the fixes. Tom Vaught was looking for a shorter mount recently. I think that was why he wanted it.
__________________
"I know just enough to keep me here, but not enough to get me out" |
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#19
11-06-2019, 08:30 PM
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Quote:
I have a Doug Nash 5 speed trans in my 64 GTO with a Lakewood scatter shield. The Nash Trans rear mount sits lower in the vehicle (when the engine install angle is correct). I was looking for a shorter trans mount because of that, not because I had frame sag or other issues with the engine/frame installation. From the Installation Manual: To install the 5-speed, a new cross-member must be fabricated. The transmission mount has to be moved to the rear 2.25”, and since the motor and transmission angle down, the mount will have to be .38” lower. THAT was why I was looking for a shorter trans mount. Tom V.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. Last edited by Tom Vaught; 11-06-2019 at 08:38 PM. |
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#20
11-06-2019, 08:16 AM
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On my '65 with it's original 389 I tried two different sets of motor mounts. The motor did bolt in slightly lower with the one set, but definately not as low your picture shows. I have 093 heads on it now and the exhaust manifold to rag joint clearance is 3/4". How are the clearances on the passenger side?
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