adamj
Full Access Member
- Joined
- Apr 17, 2015
- Posts
- 349
- Reaction score
- 43
- Location
- Colorado
- First Name
- Terrence
- Truck Year
- 1987
- Truck Model
- V20 Suburban
- Engine Size
- 5.7L TBI
Not speed, but rpm is what the real question is here. Someone posts, "I can do 80 all day no problem!" - Sure that's fine, but you need to look at your own vehicle and see if that's reasonable for you. With an overdrive trans, larger tires, and say 3.73 gears, that should be fine, but if you have 4.10's and a manual transmission then forget about it, you're not going to be going 80 mph.
I guess the question is what's the safe long-term rpm for highway driving for the engines of this era? They're not high-reving engines... For me, just by feel, I don't like to go above 2750 rpm, it just feels too fast for the stock sb350 I've got, (could be different if you have a different cam or a built up engine). It seems happy at around 2500 rpm.
What do ya'll feel comfortable with pushing the engine at for sustained periods?
I guess the question is what's the safe long-term rpm for highway driving for the engines of this era? They're not high-reving engines... For me, just by feel, I don't like to go above 2750 rpm, it just feels too fast for the stock sb350 I've got, (could be different if you have a different cam or a built up engine). It seems happy at around 2500 rpm.
What do ya'll feel comfortable with pushing the engine at for sustained periods?