13's, stock '71 318 short block.

If you can get 300 horse out of a 318 it will go 13's in any a body.
max 3500 pounds.
Not to many a bodys weigh 3500 pounds.
300 horse and weight:
(WITH DRIVER)>>>> 3500pounds\300horse=13.95et
3400pounds\300horse=13.79et
3300pounds\300horse=13.65et
3200pounds\300horse=13.51et
3100pounds\300horse=13.37et
This is a well tuned car (to the floor)that has no tire spin what so ever.
mopar muscle did a 318 build and made a final 357 horse power.
With 3.55 gears and a 3000 stall converter went 12.76 at 103mph.
My guess with 357 horse would have been 12.88et.
The numbers i posted are pretty solid as far as power to weight goes.
From bracket racing ,you get a good understanding of power and weight.
What we get use to is talking like 300 horse is chump change,but it's not.
250 horse is pretty good horse power.
Remember that torque is what moves the car.
The mopar muscle 318 made 388fp of torque.
THATS OVER 370 FOOT POUNDS FROM 2750 RPMS TO 5000 RPMS.
It was a good solid runner.
So to answer your question ,yes you can go 13's with a stock 318 bottom end.
I remember when a car going HIGH 15'S in the quarter was a fast street car and a car going 14's was the one to beat.
13's was the fastest big blocks and people couldn't buy anything faster.(you had to build it)
This is when four speeds were everything because torque converters where not what they are today.
OK I HAVE RAMBLED ON LONG ENOUGH :rolleyes: GOOD LUCK\\\\\\\\