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Old 07-14-2023, 01:26 PM
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ScottP ScottP is offline
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Join Date: May 2007
Location: Tewksbury, MA
Posts: 128
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I've been having lots of fun dialing in and just driving this new combination.
Unfortunately, I'm noticing that my used/self built 4L80E is showing signs of
struggling a bit with the new found torque. I'm seeing indications of slippage
on the 2-3 shift at full throttle. It started happening as I really got the AFRs
dialed in at the upper RPMs, which tells me I'm making more torque than this
trans can handle. I can't really complain, I installed it 6+ years ago, and its
been perfect during that entire time.

So, I've made the call to Jake's and am in line for a new 4L80E. I've elected to
add the optional BOP bellhousing just so I can eliminate my Chevy to BOP
bellhousing adapter and flexplate to converter spacers. I'll end up rebuilding/
freshening the unit I pull out for another project. A buddy of mine has a 65
Riviera where I think my old 4L80E would be perfect.

So, for at least the next 12-14 weeks, I'll keep my foot a bit out of the throttle
and just cruise. I'm sure I'll have another update once I swap in the new
Jake's transmission.

-Scott

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70 Bonneville convertible, Vortech V7 YSi supercharged EFI455 + 4L80E