88 t1 with 6 bolt crank?

[boost geek]

Scrapping my 86 s.c., pulled engine and dropped the pan today, block is 88 but has a 6 bolt crank in it. I also have an 87 block, but that has the 8 bolt. Werent 6 bolts dropped in 85? Someone must have put the 6 bolt in, is one tougher than another? The 87 has a 5 bolt crank pulley, the 88 a 4 bolt. The 88 also has the 287 head with an 88 cast mark, werent these heads only 85?
Anyways, just wondering...

[TurboShadowES]

is the head a roller rocker one?i have a 287 head that i think is a RR head but i may be looking at it wrong.

[boost geek]

No, it`s a slider cam, followers are very worn out but still made decent power...

[Turbodave]

Quote:

Originally Posted by boost geek Scrapping my 86 s.c., pulled engine and dropped the pan today, block is 88 but has a 6 bolt crank in it. I also have an 87 block, but that has the 8 bolt. Werent 6 bolts dropped in 85? Someone must have put the 6 bolt in, is one tougher than another? The 87 has a 5 bolt crank pulley, the 88 a 4 bolt. The 88 also has the 287 head with an 88 cast mark, werent these heads only 85? Anyways, just wondering...

Sounds like an 85 or older crank in your 88 block I don't think it's any stronger or weaker than an 8 bolt crank.

As far as the crank pulley goes 88 and newer got a 5 bolt pulley, your 87 should have a 4 bolt pulley but I'm goning by model year, so if the block was made late in 87 it probably came out of an 88 vehicle and had the 5 bolt pulley.

The 287 heads were still made a few years after they stopped putting them on production vehicles so it could have been a replacement part, I think I remember the carb cars getting the old castings for a few years longer than the others as well. My GLH has a MP ported head and it is a 90 casting 287 or 445 PN head (can't remember which). All the MP heads I've seen have a little heart cast into the machined area above the temp sensor.

[moparzrule]

Yeah the 88' motor probably threw a rod, scoring the crank. So they just found one at a junkyard in decent shape and threw it in with the flywheel from the same engine.