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Heads difference.


dc96819

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Whats the difference, 98tm and the 90tm heads ?
I have 1 90tm and the other is a 98tm on my 98 ranger.
Both have oval exhaust ports.

Over Head Valve
Ford 4.0 – 244 V6 90-94 Ford 90/93TM
Ford 4.0 – 244 V6 95-97 Ford – 95TM (Larger Ex Ports than 98TM)
Ford 4.0 – 244 V6 98-00 Ford 98TM
 
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adsm08

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Well I know the 95TM heads changed to the "Fast burn" combustion chambers. I'm not sure what else changed but I thought the oval ports were a mark of the later casting. Are you sure the casting number isn't damaged or incomplete on the alleged 90 head?
 

dc96819

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It is 90tm. Mabe the intake ports are different from the 98tms ?
 

dc96819

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Top head is 90TM
Bottom head is 98TM
 

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ashleyroachclip

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All I can say , is WOW.
That is some serious size difference .
 

Duber15

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Anyone know of the 98TM exhaust ports can be ported out to match the 95tm size?

Sent from my SM-G900R4 using Tapatalk
 

Duber15

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