Looking for DYNO results on a stock 1969 L78

[WILMASBOYL78]

I'm sure you have the read the old article.."The 13 second grocery getter"....this was a 69 L78 TH400 Nova in as delivered trim as I recall, ran high 13's. Not sure why you would want info with no smog, blueprinted, tuned, but no headers..?? why do all that and run it thru exhaust manifolds..?? anyway, I seem to recall an article about a Bill Thomas blueprint of the original 1965 L78...and it really produced 425hp...I know of a number of 1970 L78 motors that have made similar power on the dyno...but they all used headers. The horsepower on these motors was under rated...but, probably accurate in stock trim. They need to breath...performance tuning and headers are a must to reach full potentional.

wilma