engine life expectancy

Hello.
I'm looking to buy an 89 Firebird Formula from someone I know. It has 140,000 miles on it. Presuming it's been well maintained from day one, how
many miles can I expect that engine to live through before it dies.
TIA!!!
^JR^
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

My 88' has 175,000 on it now and I have given it a hard life, I bought it with something like 150,000 on it. She still runs strong with the original T-5 that has seen better days. I'm rebuilding the tranny within the next month or so.
...Ron -- 68' Camaro RS 88' Firebird Formula 00' Mustang GT Vert
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

have owned ran fine without major engine work past 250,000 miles until they were sold (with the exception of one plastic timing gear). Wife's caddy still goes from oil change to oil change without using a quart and it has over 275K miles on it. These engines, if properly maintained, will wear a body out before they need overhaul. (Charles will probably weigh in on the reliability of the V6's *g*). "Well maintained" is misunderstood by some people. Most people think it only means: change the oil every 3000 miles and keep good sparkplugs in it. It means certain conditions must never have been allowed to occur. 1. Never have been run overtemp with low coolant level or without antifreeze. 2. Never have been run with a "dirt leak" in the air intake system. 3. Never have been run in over-rich fuel condition for long periods. 4. Never have been run over 6000 miles on any one change of oil, or major wrong weight of oil used. 5. Never have been run overspeed in excess of 100% manufacturers redline RPM for any length of time. If these conditions are avoided the V8 will survive the rest. If you think the 89 has never been subjected to any of these conditions, buy it and worry more about when to overhaul the transmission. p.s. the order of these just happens to be causes of "premature death" order from personal "auto-psies".
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
What can need replacement is the alternator, water pump, fuel pump, hoses, belts, the heater core maybe on its last legs, the same with the radiator. If there is a distributor, the bushings could be going. Timing chain.
But, these are all replaceable. My brother has a heavy duty Chevy (350 4 bolt main with 4 speed) in Texas and has 270,000 on it. All of the above have been replaced over the years plus a cam shaft.
Good luck.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.