G
Guest
·I posted a message the other day, 289 Stalls Under Load, looking for some other possibilities.
The engine idles but sputters and wants to stall under load when the transmission is engaged. Managed to take it around the block though.
Here are the details:
I've got a re-built 289, Federal Mogul CAM, new pistons, Crane lifters, pushrods and rockers (adjustable) ... everything was machined back into specs. Re-built 302 heads on a 289 block ... 8x1 compression.
Installed an Edelbrock Performer manifold and 600 CFM carb. Car dies/stumbles when put into gear. Timing is set at 8 degrees but runs much better around 15 or higher. Hard to keep running with the vacumm advance removed, especially at 8 degrees.
Vacumm reads steady 10-11 at 700 RPM (idle). Vacumm taken off of the right front of the Edelbrock carb for Trans Modulator and Dist. Advance. Vacumm taken from throttle body for PCV. Neither seem to be leaking but slight improvement w/ the PCV disconnected and plugged. Left vacumm port on edelbrock unused, rear large port is plugged.
Car has stock exhaust manifolds with no exhaust system yet ... my original question was can the lack of back pressure cause the stalling under load condition?
Brand new plugs, wires, cap, points, condensor. Plugs set at .044, dwell is 23 degrees. New fuel pump and filter. Coil is old and in unknown condition ... problem here?
Valve timing used the "O" setting on the CAM gear.
I have since rechecked all of the rocker arm adjusments ... seem good.
Any help is appreciated.
The engine idles but sputters and wants to stall under load when the transmission is engaged. Managed to take it around the block though.
Here are the details:
I've got a re-built 289, Federal Mogul CAM, new pistons, Crane lifters, pushrods and rockers (adjustable) ... everything was machined back into specs. Re-built 302 heads on a 289 block ... 8x1 compression.
Installed an Edelbrock Performer manifold and 600 CFM carb. Car dies/stumbles when put into gear. Timing is set at 8 degrees but runs much better around 15 or higher. Hard to keep running with the vacumm advance removed, especially at 8 degrees.
Vacumm reads steady 10-11 at 700 RPM (idle). Vacumm taken off of the right front of the Edelbrock carb for Trans Modulator and Dist. Advance. Vacumm taken from throttle body for PCV. Neither seem to be leaking but slight improvement w/ the PCV disconnected and plugged. Left vacumm port on edelbrock unused, rear large port is plugged.
Car has stock exhaust manifolds with no exhaust system yet ... my original question was can the lack of back pressure cause the stalling under load condition?
Brand new plugs, wires, cap, points, condensor. Plugs set at .044, dwell is 23 degrees. New fuel pump and filter. Coil is old and in unknown condition ... problem here?
Valve timing used the "O" setting on the CAM gear.
I have since rechecked all of the rocker arm adjusments ... seem good.
Any help is appreciated.