looking for oil filler cap

[daemonhat]

recently purchased a 1988 chevy C/K 2500 4x4, 350 with centerbolt heads, and i need an oil filler cap, went to dealer and they told me that model truck only came with a 4.3 that year, and none of the filler caps they had would work. was wondering if it could be possible an engine swap was done and the 350 is out of a van, and has a filler tube that uses a grommet? there are no slots or threads for the screw in type caps, and the push in style are too small. any help would be appreciated

[amac209]

i've never seen any like that. what happens if you remove the grommet? are you sure it has gm valve covers? if not you might have to buy some.

[daemonhat]

didnt have a grommet in it, just a hole, say 2" in dia. with a lip about 1/4" high, pointing down toward the top of the head that goes around the circumfrence of the hole, no slots, grooves, threads, anything. and they are gm valve covers

[petey_z24]

The dealer must have smoking something when you went to him, according to the autozone website gm put 350's in 90% of the 2500s that year, when you think about it, it would be kinda useless to have a 3/4 ton with a v6

[JWhite8055]

you wanted chrome valve covers anyhow..now you have an excuse.

[daemonhat]

yup JW, i guess i do, lol. still havent been able to find anything remotely close

[Vortec350S10]

I did an engine swap in my S10 with a '90 350 out of a van and I have the same problem. I must have thrown away the filler tube from the van because it's so long. All that's in the hole is a stiff rubber grommet that basically just makes the hole smaller. When I pul out the grommet- it's just a round hole with no slots or threads. Wierd huh?

[daemonhat]

very weird, but gives me something to try, think i'll check the dealer and see what they can come up with