Anyone Here Ever Dyno Their Mild Built Small Block Car?

ir3333 said
you've been reading too many build posts that dyno'd a big number (dyno'd by the builder)
a stock early 340 was about 275 - 280 hp and those that lived through the era know how
well these engines pulled in an A body.
your numbers look good and your car should work great.

There's good reason other builds will have more power. You'll probably note that most 400hp dyno'd builds that have timeslips that could make that plausible don't have things like a cam pretty close to the stock 360-LD's.

leblanc said
Supposedly a stock 1979 4 bbl 360 had 265 HP .

I believe one was rated for 225 (E58) and the other was rated for less than 180. This has a cam closer to the latter than the former. There was also a 2bbl (E55) with the bigger cam and I think that had more power than the 4bbl LD.

purpleheart0189 said
Don't get caught up in numbers

I'm not gonna say what my 408 made but it was below 400 to the tire and I have a street car 26 in tall tires and 3:91 gear cruise 70mph 3000 rpms so it is t a nasty type of car at all and I run 11:20 117mph with a slipping trans. Just use the dyno to get a/f in a good starting point and go from there my street car kills a lot of high horsepower cars at the track .
Best advice is get it running great then add one thing at a time and see what happens . I call it chipping away

Very much so. It's important in the street and a car that'll see track time. You have what power you do, and it working properly is the most important thing. Sure you can always go back through later and increase it but if the goal is street driving it, that's important. On the flip hand though people easily get worried that building a 318 or a 360 to a 340 or close to a 5.7's specs are going to make it unstreetable in some manner, but if you're not frequently rock-crawling or on the extreme end of medium duty truck usage- cams as small as a 360's or 318's are typically not best for anything.