Engines
 

What is the life expectancy of a 305 and 350. Lets say I start off with 70k miles on a 5.7 how much longer would it last to reliably?

I just looked one up for a customer and most were around 150k for sale a bunch well over 200k if you change the oil regularly and do maintenance it will last for a very long time, a 305 won't last quite as long typically though. My last 350 had 375k on it when I rebuilt it, and it still ran well in an old farm truck

ok thanks

your really interested in getting a 3rd gen finally eh

with good maintenance, get well over 200,000

Depends on the driver.. and the mechanic.. i race mine... I change oil every 3 months and spark plugs as well..

whats the point in changing the plugs that often? is it really necessary?

Shifting at 5500rpm.. um.... yea

my friends daily drivin 305tbi hit 175k and hes still making the power he made at 70k around 250hp. if u maintain it it will last.

that is very unusual for the 305 the small cylinders and the bad cams tend to kill them faster

Theres no way the 305 TBI made 250hp.. they had around 175...

Ive read you can mod those out to almost 375 horse natuaraly aspirated

im with this guy

but stock I think the most was 190

most 305's make about 120 stock the cylinder bores are too small to be real efficient