1969 Revving Issue
Thread Starter
Drifting
Joined: May 2007
Posts: 1,491
Likes: 2
From: North Royaton Ohio
1969 Revving Issue
Ok, this is a question about my dad's car. I'm not too up on the ignition system on his car, so I'll do my best.
The car is a 350/300 with TRW 11:1 pistions and basically everything else stock. It has new Blue Streak points and condenser, dwell set at 30 (we've tried it everywhere else, too), vacuum advance works, mechanical advance works, plugs are good, new carb baseplate gaskets, all newer vacuum lines, and the coil is about 5 years old, but doesn't have many miles. Timing is at 8*.
The problem is that the car will not rev past 3200 in any gear (4 speed). It pulls strong right until 3200 and then pegs like it has a rev limiter on it.
Anybody got any ideas? The car is pristine other than this problem and we've been fighting it for a while. Any help appreciated.
The car is a 350/300 with TRW 11:1 pistions and basically everything else stock. It has new Blue Streak points and condenser, dwell set at 30 (we've tried it everywhere else, too), vacuum advance works, mechanical advance works, plugs are good, new carb baseplate gaskets, all newer vacuum lines, and the coil is about 5 years old, but doesn't have many miles. Timing is at 8*.
The problem is that the car will not rev past 3200 in any gear (4 speed). It pulls strong right until 3200 and then pegs like it has a rev limiter on it.
Anybody got any ideas? The car is pristine other than this problem and we've been fighting it for a while. Any help appreciated.
Thread Starter
Drifting
Joined: May 2007
Posts: 1,491
Likes: 2
From: North Royaton Ohio
Instructor
Joined: May 2009
Posts: 243
Likes: 0
From: salisbury missouri
i would check the carb linkage for binding,mabe the carb is not opening up all the way.check carb and excelerator cable for proper movement.
could be starving for fuel,check fuel pressure.
could also be the float in the carb not set right,or messedup not letting the right amount of fuel into the carb.but i would think it would loose powerat 3200 rpms if this was it.
some inline filter have an arrow for direction dont know if this would be the problem but i would check if my car.
does the engine run good at 3200 rpms,if it does cant see it being a major problem?
the onlything that stands out that this could really be is the carb linkage stoping and not openingup the carb all the way.
this is what i would check first.all the other symptoms above this one would show a powerloss at 3200 rpms(moter would die out and not rev no further same with ignition would hear cutting out missing.
i guess the info we need is how does engine act at 3200rpms?
could be starving for fuel,check fuel pressure.
could also be the float in the carb not set right,or messedup not letting the right amount of fuel into the carb.but i would think it would loose powerat 3200 rpms if this was it.
some inline filter have an arrow for direction dont know if this would be the problem but i would check if my car.
does the engine run good at 3200 rpms,if it does cant see it being a major problem?
the onlything that stands out that this could really be is the carb linkage stoping and not openingup the carb all the way.
this is what i would check first.all the other symptoms above this one would show a powerloss at 3200 rpms(moter would die out and not rev no further same with ignition would hear cutting out missing.
i guess the info we need is how does engine act at 3200rpms?
Thread Starter
Drifting
Joined: May 2007
Posts: 1,491
Likes: 2
From: North Royaton Ohio
The motor hits 3200, sputters, and goes no higher.
I don't think the problem is with the linkage, but I'll double check.
I think that it's either the coil or the fuel pump, but I'd rather not replace both to find out. Is there any way to tell which one it would be without replacing both of them?
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Drifting
Joined: May 2007
Posts: 1,491
Likes: 2
From: North Royaton Ohio
