Just busted off the timing cover of my spare motor to discover a double row chain, woo! Are these stock or has someone been tinkering with engine?

Edited April 8, 201313 yr by luk3333

Not sure on a 3k but yes 4k are double row std. 5k's have a single row.

Cool thanks

A 4k I got off a member a couple of years back had a single.

I thought it was 3K's with the double, 4/5 with single.

Maybe they were stock with a double and when the chain was replaced people put singles on them? Or vice versa?

Edited April 8, 201313 yr by luk3333

Every 4k i've pulled apart (3) has had a double

All three of the "flat top piston" 4k's I've pulled down have had twin row.

Was that 4k you had Gav a 4ku by any chance?

You'll probably find its the hydro cam engines that run singles.

Its pretty easy to tell if its an aftermarket performance one. They'll have multiple key ways on the crank gear.

Edited April 8, 201313 yr by kickn5k

Mine was flat top 4k-c , single key way

Edited April 8, 201313 yr by luk3333