What RPM should I shift at?

[33IMP]

If it's a real 340 car, and thats the numbers match engine......
If you want LOTS more suds, and the budget can stand it, put the 340 in a corner, in a bag, save it, and throw a 408 BP in it.
I wouldn't hop up a matching 340. Non matching- do whatever you want.

 

[B3422w5]

Did several runs at the Mopar Nats last weekend. Tried a little of what I read here and found the the best MPH was shifting around 5700 RPM. ET times were also a little better. Ran fairly consistent times of a 14.68. Guess it's ok for a 100% stock car. I am now on the fence about just dropping the coin and ordering an engine from Blueprint. Thanks for everyones input!!!

Sounds about right, nice job!
Back in 1972 I made my first ever lap down the track in a 69 340 GTS, my first car. Bought it for 1200.
3.55 gear and cheapy headers. Went 14.23@99

 

[4spd340Swinger]

If it's a real 340 car, and thats the numbers match engine......
If you want LOTS more suds, and the budget can stand it, put the 340 in a corner, in a bag, save it, and throw a 408 BP in it.
I wouldn't hop up a matching 340. Non matching- do whatever you want.

It is a real 340 car but not the matching numbers engine. I have a hard time believing there are that many that are since they were ran hard from day one, but that is a whole different conversation. Thanks for everyones input

 

[4spd340Swinger]

I tried to tell him that many posts ago

You did, but was a very complicated answer for me. While I greatly approached it, it was just over my head. I am not an engine builder by any means. However thanks for the input

 

[oldkimmer]

Factory red line was 5500 I think. Go up or down and see what happens. As if this has t been said enough times.

 

[Mike69cuda]

Just before it blows up…..