67-68 L-88

[Kim_Howie]

Were the 67 & 68 L-88 motors open chamber or closed chamber heads??

[Charley Lillard]

Closed I think.

[PhilS]

Yes, they were closed until the late 69s. I believe they went to open chamber in the low 20,000 vin numbers.

[TimG]

Thats true, 20,000 to 21,000 range. All open chamber L88's for 1969 have a different build code than a closed chamber, so it's easy to tell when looking at one. LO is a 4 speed version, I was lucky enough to judge two LO coded L88's at a Chapter NCRS event held in Ausitn over the weekend. One with 2,200 miles.

[Kim_Howie]

Thanxs guys!!! I had a guy trying to tell me that they used a different head in 67 & 68 {open chamber}I had never heard of any 7 or 8 heads being open chamber.

[Keith Tedford]

I understand that the '69 L88 that Beare Motors sold had closed chambered heads. Open chambers came later in the year. It was a rolling update as the open chambered heads became available.

[nuch_ss396]

Guys,

A short time ago I posted a related L-88 topic over at the
NCRS site. I think it would make good reading for this
topic here. Go to the link provided, then scroll down to
the topic: 427 Closed & Open Chamber Pistons
Steve Antonucci -- Tuesday, 21 March 2006, at 5:02 p.m.

L88 INFO

[LS6 RAT]

The open chamber design headed L-88's started to appear after the 1969 strike, about June 16th '69.

[Wardy]

Direct link
this should send you right to the above link w/o scrolling