Question about heads.
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Let me explain this a little better....
The 88-91 Vin C 3800 had Roller lifters and the Rockers used a Pivot( There was friction here at this pivot )
In 1993 the Tuned Port 3800 went to a roller pivot which reduced valvetrain friction... I would love to have the L27 heads on both of my 91'* for just that reason...
The L36 and 96+ L67 used the newer style Roller... But none of these used the roller tip...
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The 88-91 Vin C 3800 had Roller lifters and the Rockers used a Pivot( There was friction here at this pivot )
In 1993 the Tuned Port 3800 went to a roller pivot which reduced valvetrain friction... I would love to have the L27 heads on both of my 91'* for just that reason...
The L36 and 96+ L67 used the newer style Roller... But none of these used the roller tip...
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From: In your garage, swipin' da lug nutz
Mac, the roller rockers started in 1993.
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Originally Posted by willwren
Sandrock, my 93 SSEi is roller pivot. From the factory.
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Originally Posted by OLDsman105
sandrock
You think maybe he has 92 heads?
You think maybe he has 92 heads?
Sandrock what was the production date of the car?
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From: In your garage, swipin' da lug nutz
Uh-oh...hope this isn't considered hijacking :?
Don: Build date is 2-93 I think. I know for fact it isn't a late 92. Also, the original rod bearings showed a 93 stamp date. So, at the VERY least, the short block is original.
Wilren and Oldsman: Solid pivots as shown in the pics provided. These pics are big to show all the codes on the head that I have pulled so far. Considering all the junk that was in this head, I think they came out very well for being a home jobber (I just ground down some high spots in the exhaust ports, didn't touch the intake ports at all, and cleaned up the water ports).
Don: Build date is 2-93 I think. I know for fact it isn't a late 92. Also, the original rod bearings showed a 93 stamp date. So, at the VERY least, the short block is original.
Wilren and Oldsman: Solid pivots as shown in the pics provided. These pics are big to show all the codes on the head that I have pulled so far. Considering all the junk that was in this head, I think they came out very well for being a home jobber (I just ground down some high spots in the exhaust ports, didn't touch the intake ports at all, and cleaned up the water ports).
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From: Clovis, CA
Originally Posted by jr's3800
The L36 and 96+ L67 used the newer style Roller... But none of these used the roller tip...
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Originally Posted by MACDRIVE
Originally Posted by jr's3800
The L36 and 96+ L67 used the newer style Roller... But none of these used the roller tip...
Sandrock, I am very interested here.... Can you by chance rear the part number on the head/* ?
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