Bent Pushrods

[96lt1z28]

How can I tell If I have a bent pushrod? Any noises, maybe a miss?

[Awax]

From my experiance you will hear a ticking sound. Its pretty loud but when i bent my pushrods it was pretty bad so i know right away. As for a slight bent pushrod i donno...

[96lt1z28]

Thanks, it is ticking

[BlackLT1Z28]

A tick could also be a small exhaust leak or a needle bearing on a rocker arm.

[96lt1z28]

Does anyone know how many coils a factory ls1 valve spring has?

[autotrix]

They all tick, but sometimes louder that normal ticks should be addressed! With 178K miles, one tick became too loud one day, so I decided to pull a valve cover and inspect. The holes where the rods come up through the head had been perfect circles, now had ovals due to the rods rubbing up against the aluminum. I pulled one pushrod out and saw that it had a Mcdonalds arch to it. So I decided to pull another, and another with the same results. At that point I decided to replace them all. Some where so close to breaking that it is a wonder to me how the car ran at all.

[WS6FBODYLOVER]

The best way is to put the car in N and turn it off then wait till its almost start turning then start it again if its a bent rad nothing will happen but if its a pressure plate it will snap it, its like $40 to replace the plate

[absolutetraction]

can u bend a pushrod in an automatic? My buddy says you can if you hit the rev limiter. I never heard that though

[INMY01TA]

Pull em out and look at them. That's really the only way. If you have headers I wouldn't worry too much about the ticking, most do it.

[ban-one]

its like 100 dollars for a set of chrome moly ones just buy a new set thats what my first mod is gonna be. its cheap insurance on your engine thats the way i look at it