Here is a article in 1968 street cars. imo the l88 had at least 20 hp or more due to 12.5

Test of the 68 BB Nova...
 

I have seen this article before....always a fun read.

Interesting that they show a more aggressive cam in the 427 model...also note the typo for the motor...they list it as an L-79 not L-72:smirk:

The photo of the Harrell spring clamps is classic old-school hotrod stuff...still works today.

-wilma

lack of smog equipment functioning and the loss of the weight of the cast iron manifolds (and no smog) had to help the 427 right out of the gate. Great article. Actually I don't see a belt on the smog pump in that one picture, so maybe the smog was not working after all. Neat that the 427 version was 50 lbs lighter than the others. Had that cool hood on the 427 that I would think could be doing something to help that carb get more air too. And is lighter.

396 427
 

HI both cars headers Toronto international drag strip after it closed down

Fantastic photos!! Thanks for sharing.

What great photos!! Thanks for the pics!!:biggthumpup:

those pictures made my day and likely month. thanks for posting such a fair match up of an L78 against a Copo. Priceless!