Can't rev past 3000 rpm

[bd]

Why didn't you replace the rotor?  As far as the timing goes, verify that the harmonic balancer hasn't slipped, throwing the timing mark off.  See Re: Not 100% sure what's wrong here.  Focus on the second and third paragraphs.  You may as well check timing chain condition, too (fifth paragraph).

[boulky12]

What type of tach do you have ? Factory or after market?  If it is an after market universal for use on 4, 6 or 8 cyl engines do you have it on the proper setting ? If the engine sounds like it's redlining it probably is.......your tach may be your problem

I have one of those cheap Autozone tachs. I do have it on the 8 cyl setting.

It could be the tach.

Thanks for your input

[boulky12]

Why didn't you replace the rotor?  As far as the timing goes, verify that the harmonic balancer hasn't slipped, throwing the timing mark off.  See Re: Not 100% sure what's wrong here.  Focus on the second and third paragraphs.  You may as well check timing chain condition, too (fifth paragraph).

I guess I never replaced it cuz I'm not sure if it's that important.

I'm gonna check out that read. Thanks

[bd]

I guess I never replaced it cuz I'm not sure if it's that important.

The rotor is no less important than the spark plugs.  Think of it this way... in a V8 engine any given spark plug sparks every other engine revolution.  The rotor sparks eight times that often.  When a rotor wears out, it affects every cylinder.

[boulky12]

I guess I never replaced it cuz I'm not sure if it's that important.

The rotor is no less important than the spark plugs.  Think of it this way... in a V8 engine any given spark plug sparks every other engine revolution.  The rotor sparks eight times that often.  When a rotor wears out, it affects every cylinder.

I'll be picking up a new rotor ASAP. Thanks bd

[boulky12]

I installed a new AC Delco rotor and didn't get any improvement.

I will be buying one of those piston stops soon so I can verify my balancer is accurate and check the timing chain stretch.

In the meantime I think I'll try messing with the timing some more cause now I only reach 2500 rpm..

[Irish_Alley]

im not sure what the 305 timing is set at but with the 350s we tend to set them around 16° advanced. if you dont hear a knock while trying to power brake then you will be ok. without a timing light we will advance them till its hard to start when hot and put the vacuum advance on manifold vacuum not ported.

[blazer74]

Spark or fuel,  does it break up, miss or pop at the same time?
Or just not rev past that point?
Bad coil, pickup, module in dist. Fuel/carb problem should break up miss or pop.
Bad camshaft lobe can cause popping and poor performance but should be ok if you ease into the throttle.
I'm thinking distributor swap from your description.

You have to rule out all the basics tho like has been said.

IMHO.