302 and AOD - vibration?!?
Thread Starter
|
Tuned
Joined: Sep 2012
Posts: 302
Likes: 17
302 and AOD - vibration?!?
I have a 302 from a 79 F150 mated to an AOD in my truck. It has a pretty serious vibration, especially around 1500 - 1800 RPM. I googled the symptoms, and it seems like I may have the wrong flexplate. According to the info that I have found, my engine is a 28 oz external balance, and has a 157 tooth flexplate (it had a C4 mated to it) and the AOD requires a 164 tooth flexplate. Some of the threads I read said that a flexplate from a Bronco or F150 with a 351W and AOD would be correct, as the 351W are all 28 oz external balance.
Has anyone here experienced this, and if so, could you tell me what flexplate you used to correct it?
Thanks!!!
Has anyone here experienced this, and if so, could you tell me what flexplate you used to correct it?
Thanks!!!
Laughing Gas
Joined: Mar 2004
Posts: 989
Likes: 113
From: australia
The correct flexplate should have a counter weight welded to it .
I think from what I've seen the 50 oz flexplates usually have a few cutouts in them with little or no weights .
You should be able to verify what flexplate you have through the inspection plate at the bottom of the sandwhich plate .
I think from what I've seen the 50 oz flexplates usually have a few cutouts in them with little or no weights .
You should be able to verify what flexplate you have through the inspection plate at the bottom of the sandwhich plate .
Elder User
Joined: May 2007
Posts: 766
Likes: 6
From: south Fl.
I have a 302 from a 79 F150 mated to an AOD in my truck. It has a pretty serious vibration, especially around 1500 - 1800 RPM. I googled the symptoms, and it seems like I may have the wrong flexplate. According to the info that I have found, my engine is a 28 oz external balance, and has a 157 tooth flexplate (it had a C4 mated to it) and the AOD requires a 164 tooth flexplate. Some of the threads I read said that a flexplate from a Bronco or F150 with a 351W and AOD would be correct, as the 351W are all 28 oz external balance.
Has anyone here experienced this, and if so, could you tell me what flexplate you used to correct it?
Thanks!!!
Has anyone here experienced this, and if so, could you tell me what flexplate you used to correct it?
Thanks!!!
Somewhere i have a page from an old NAPA catalog listing flex plates, # of teeth and weight size with part numbers. I'll dig it out if you need it.
Hotshot
Joined: Oct 2009
Posts: 16,173
Likes: 4,780
From: Burbank, WA
Both the 28 and 50 flexplates will have counterweights. (IIRC, the 50oz version has a larger weight than the 28) 302's after 1981 used a 50oz imbalance flywheel/flexplate. 351's continued to use the 28oz version. If your AOD was behind a late model 302 and you used that flexplate, there's your problem. Get the correct flexplate and you should be good to go.
Cargo Master
Joined: Jun 2001
Posts: 2,571
Likes: 22
From: Oxford, Indiana
The plate that you're looking for isn't exactly rare, but they aren't laying around in piles at the salvage yard either. The 351W/AOD combination was not common. Buy a new one. They're cheap. Check here:
Transmission Part by Bulk Part Ford flywheels Flywheel, Ford C5 / AOD, 289, 302, 351 engines
Transmission Part by Bulk Part Ford flywheels Flywheel, Ford C5 / AOD, 289, 302, 351 engines
Fleet Owner
Joined: Jul 2004
Posts: 27,294
Likes: 1,055
From: NM
Best place I've found for flexplates is Pioneer, they make most of the non-OEM replacements:
http://www.pioneerautoinc.com/wp-con...6/FRA-2011.pdf
Trending Topics
Senior User
Joined: Feb 2015
Posts: 387
Likes: 1
From: Arizona
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
Thread
Thread Starter
Forum
Replies
Last Post
jeffinct
1948 - 1956 F1, F100 & Larger F-Series Trucks
6
May 7, 2018 09:17 AM
corner27
1973 - 1979 F-100 & Larger F-Series Trucks
14
Sep 30, 2010 09:44 AM
ronclark
Clutch, Transmission, Differential, Axle & Transfer Case
3
Feb 24, 2005 07:05 AM