68 Yenco clone

[auschris001]

Wayne,

Thanks again for clarifying the cyl head deal as it turns out I have a pair of closed chamber rect port cast heads (same head but 2 different p/n) and actually wanted to swap them for some open chamber heads for another project. Now they are the start of an L72 I hope.

Cheers Mate: Chris H

Glad you're on track. You and I are on the same page when it comes to original and clones. I for one will never have sufficient $$$ to buy an original, even though I pine for one. That makes clones the only reasonable option. I think you'll have a nice hot rod! And as far as I'm concerned, you can keep asking questions. If can answer them, I will.

Catch ya' later.

Wayne

[auschris001]

Wayne or Bob,

Did the 68 Yenko come with a 140 MPH speedo or was that just 69

and what about things like power steer, air and power windows, I know they came on SS and RS but did they come on a 68 Yenko

Cheers: Chris

[original owner]

chris, 68 yenkos had 140 mph speedo's, mine had no P.S. as allthe other ones kline chev sold in 68, also no ac, nopower steering all were ss's 4 speeds. you should really get rid of the auto. trans. They had passenger car engines ( L 36's, low comp. 10.25 to one,hydro lifters small carb,small heads, small intake manifolds, mild cams.) the factory rating wae 390 H.P. which was very high. Had this motor in a 69 vette. absolutly no where to go, to up H.P. You want a L 72 4 speed 100%. As to clones , yenkos new, were the biggest clones of all, think about this and reply. thanks Bob krueger

[SuperNovaSS]

Bob,


Are you trying to say the cars that Yenko converted came from gM with L-36 engines???

[PeteLeathersac]

As I've always understood, all '68 Copo 9737 cars were shipped w/ the unique MV Suffix 396 L78 engines installed and planned for Yenko to transplant 427/425 L72 shortblocks reusing the heads etc..
* Note not all cars were converted and some were sold and/or dealer traded w/ their MV Suffix L78's still intact..

Can anyone post the unique carb #'s shipped w/ these MV Suffix L78's?.
Also what was the factory HP rating of the MV Suffix L78's?.

[img]<<GRAEMLIN_URL>>/beers.gif[/img]
~ Pete

[auschris001]

Pete &amp; Bob,

I have found at least 4 block numbers #3869942, #3904351, #3916321, and #3935439 that are 427 numbers
Q: Is there just one specific number for the L72 L88 ???

Cheers,Chris

[auschris001]

Pete,

Can we agree that there were 70 Yenko Camaro's built in 1968 and that all were 4 speed.Most were SS and at least one of the first COPO's was an SS/RS L78 (396-375hp)
That said,I am hearing that of those 70, 64 were COPO 9737 but in the initial months of 1968 6 were transplants with a COPO option
Can someone confirm this bit.

Cheers: Chris H

[auschris001]

Bob,

From what I am reading 1968 was a mix of corvette engine transplants and later that year the COPO 9737 and all 69's were COPO
Even though the torque drive was an option, it was never in a Yenko as they were all 4 speeds. I am hearing a lot were L78 396
and L72 427 and they had the same cyl head cast rect port closed chamber.(I have 2 heads #3964291 &amp; 3873858)can someone tell me which number is correct for 1968.
Now what about the L88 427 ??? is there a 1968 L88 Yenko

Cheers, Chris
ps; thanks again , someone said this would be hard and they were right.