L88 on ebay - Page 2

**Hotrodpaul** · #11 01-08-2007, 02:44 AM

I thought the ZL-1 used open chamber heads.

Paul

SBR · #12 01-08-2007, 03:34 AM

[ QUOTE ]
I thought the ZL-1 used open chamber heads.

Paul

[/ QUOTE ] Harold and Paul,
The L88 on ebay is equipped with the first design L88 engine. The second design L88 engine which went on production around vin 22000 or mid June of 69 is equipped with the open chamber heads revised camshaft, holley double pumper carb, stronger rod bolts. It is identical to a ZL1 engine except of course for the block material.

nuch_ss396 · #13 01-08-2007, 03:48 AM

[ QUOTE ]
[ QUOTE ]
I thought the ZL-1 used open chamber heads.

Paul

[/ QUOTE ] Harold and Paul,
The L88 on ebay is equipped with the first design L88 engine. The second design L88 engine which went on production around vin 22000 or mid June of 69 is equipped with the open chamber heads revised camshaft, holley double pumper carb, stronger rod bolts. It is identical to a ZL1 engine except of course for the block material.

[/ QUOTE ]

Steve,

Are you sure about the 2nd design L-88 using the same cam
as the ZL-1? I thought they were different. Also, the
1st design L-88 would have used the '842 aluminum heads
and the 2nd design would have used the '074 heads - correct?

Steve

SBR · #14 01-08-2007, 04:38 AM

[ QUOTE ]
[ QUOTE ]
[ QUOTE ]
I thought the ZL-1 used open chamber heads.

Paul

[/ QUOTE ] Harold and Paul,
The L88 on ebay is equipped with the first design L88 engine. The second design L88 engine which went on production around vin 22000 or mid June of 69 is equipped with the open chamber heads revised camshaft, holley double pumper carb, stronger rod bolts. It is identical to a ZL1 engine except of course for the block material.

[/ QUOTE ]

Steve,

Are you sure about the 2nd design L-88 using the same cam
as the ZL-1? I thought they were different. Also, the
1st design L-88 would have used the '842 aluminum heads
and the 2nd design would have used the '074 heads - correct?

Steve

[/ QUOTE ] I have heard conflicting reports about whether the second design L88s used the ZL1 cam but I was told by someone who is very knowledgable that this was indeed the case. As far as the head castings the first design engines used the 842 heads and the second design engines used the 074 heads.
Steve

**737Driver** · #15 01-08-2007, 04:54 AM

I had the privelege to judge this car last year at Bloomington and it is one spectacular piece.

Jeez, wonder how much a red/black 'Benchmark' L88 would go for? Huh, anybody...Steve?

Regards,

Mark

Paul D · #16 01-08-2007, 04:57 AM

One of my L88's is #21608 and was built on June 10 (K10). It's a documented 2nd design open chamber L88.

**737Driver** · #17 01-08-2007, 05:05 AM

It is fairly accurate to say the 074 'open chamber' heads appeared on the L88s just after the strike in 69. The 842 'closed chamber' units were used on the L88s prior to the strike. The 842 heads continued to be used with the L89 Corvettes until the end of 69 production. The 074 heads went on to be used on the 71 LS6 Corvettes.

Regards,

Mark

SBR · #18 01-08-2007, 06:10 AM

[ QUOTE ]
I had the privelege to judge this car last year at Bloomington and it is one spectacular piece.

Jeez, wonder how much a red/black 'Benchmark' L88 would go for? Huh, anybody...Steve?

Regards,

Mark

[/ QUOTE ] Mark, I have no idea

**MosportGreen66** · #19 01-08-2007, 07:09 AM

what a stunning example.
Thanks for the L88 lesson guys!

nuch_ss396 · #20 01-08-2007, 04:59 PM

[ QUOTE ]
It is fairly accurate to say the 074 'open chamber' heads appeared on the L88s just after the strike in 69. The 842 'closed chamber' units were used on the L88s prior to the strike. The 842 heads continued to be used with the L89 Corvettes until the end of 69 production. The 074 heads went on to be used on the 71 LS6 Corvettes.

Regards,

Mark

[/ QUOTE ]

Mark,

I'd really like to know what difference there was in the
piston designs between these two L-88 designs. Dome height
and/or configuration must have been different. Can you comment?

Steve