block differences between 87 and 88 (oiling, strength, etc.)

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block differences between 87 and 88 (oiling, strength, etc.) by coinball

Started on	: 09-11-2003 09:28 AM
Replies	: 3
Last post by	: Doug Chase on 09-11-2003 05:51 PM

coinball
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Report this Post09-11-2003 09:28 AM

i know the '88 block was internally balanced but did they improve the oiling system or anything else to make the '88 block superior to the earlier blocks?

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Eric
'87 GT 5-speed Gold/Tan NOW with a 4.10 4-speed <- edit broke 4.10 back to 3.65 4-speed
3.1 TDC + other goodies coming eventually

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Raydar
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Report this Post09-11-2003 12:53 PM

Seems like I heard that the 88 (and maybe the 87) got lead-in grooves on the bearings to help with oiling.
Don't hold me to it, though. I could be wrong.

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Raydar

88 3.4 coupe. 17s, cut springs 'n all.

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Rainman
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Report this Post09-11-2003 01:18 PM

The blocks themselves are about identical. The crankshafts are different, the '88 crank is much better; neturally balanced and has lead-in grooves. Good new is the cranks are interchangeable between different year blocks.

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Doug Chase
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Report this Post09-11-2003 05:51 PM

The blocks have some subtle differences, but not anything that matters in a Fiero.

The '88 block has an undrilled boss for a crank position sensor, and it has a boss on the front and rear of the lifter galleries.

Internally they're identical.

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Doug Chase
Chase Race
Custom roll cage fabrication available
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'87 Fiero SE V6 5-spd for sale $2200

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