i just got a new tack for my truck but i dont kno what the redline is.... can someone help me out, i have a 86 HO 305 chevy smallblock, im guessing around 5500. thanks

first of all its a tach...second of all the highlighted red part towards the top of the tach is when your redline starts..

yes my bad i realized after i posted that i spelled it wrong, but i kno how to read a tach, but on mine it has an adjustable marker for redline depending on the car it goes on. right now its set at 5500 and i was wondering if anyone knew for sure what that engine redlines at

Some of the GM tach's don't display a redline. My dad's bravada has a 7000rpm tach with no redline indicator, but it never touches the redline. I would guess around 6000

seriously i'd just leave it at 5500 cuz that seems about right

i just got a new tack for my truck but i dont kno what the redline is.... can someone help me out, i have a 86 HO 305 chevy smallblock, im guessing around 5500. thanks


Stock 305? I'd put it lower, more around 4800-5000rpm. They weren't much for high end power.

Just go drive the truck, watch the tach... take a note when the motor stops pulling... make that your red line. That way you know to shift a bit after your peak power. So you're always in your power band.


Make sense?

do a search online for the engine specs, or look in the service manual. it's always written down somewhere.

i dont have a manual because i just put it in my s10, but i will do a search. i figured it was 5500 becasue in my dads 1500 his redlines at 5500 so i figured mine was about the same, thanks for the help

and 80's monte carlo with a 305 stock redlines at a laughable 4000rpm. so i guess your 305 should be similar to that one.

4000? Thats like a fast idle! :lol2:

i don't even hit full boost at 4000rpm.

i don't even hit full boost at 4000rpm.

i "cruise" at 4000 rpm going 70 on the freeway in 5th.

nice...idea on where to find the redline...but PLEASE...don't try this at home!!!

put the truck in first and accelerate...DONT SHIFT...when everything overrevs and blows up...mark 200rpm b4 that... THATS YOUR REDLINE!!...
AGAIN
DO NOT TRY THIS AT HOME...

4000rpm is where i get my torque...i'm trying to figure a better launch though, mine tears the hell outta my tires but i haven't found a faster launch yet

i kno mine doenst redline at 4000, becasue when i floor it, it doesnt shift into third until 4500 rpms.

...if it shifts itself...do you really need a tach?

well when i race im going to shift it manually(1sdt,2nd,drive) and im going to shift it at or just before redline. i think i can get alot mroe out of each gear that way.