datac":557jg7td said:
Thanks for the advice- I'll start with the fuel pump, float level, maybe try a valve adjust before I pull the front cover for a cam degree. I'm surprised that it seems to sound, run and drive so well, considering how far amiss something clearly is.
I first built this engine pre-innerwebs back in the late '80s, when info was much harder to come by. Old Ak Miller articles were pretty much all I had to go on.
Here's the same engine in the same car last time around, some time in the late '80s-early '90s (heck, same fuel pump too):
There are four sizes of Autolite 1100/1101 carb, you need to measure the venturis.
Autolite 1100/1101 Sizes and Applications and CFM at 3"Hg.
1.00 Venturi(120 CFM): 144 ThriftPower Six (84.9 cfm at 1.5"Hg)
1.10 Venturi(150 CFM): 170 ThriftPower Six (106.0 cfm at 1.5"Hg)
1.20 Venturi(185 CFM): 200, 250 Six (130.8 cfm at 1.5"Hg)
1.29 Venturi (210 cfm)"223,262,240,250, 1963-1969 (148.5 cfm at 1.5"Hg)
If you have the smaller ones, that's where your hp has gone. The right size for power is the 1.29" venturi, and the size of te carb hole has to be as big as you can make it. Running them all on at the same time is best for power, as the air fuel ratio can swing around a lot. Your peak 1.5"Hg cfm as you would meadsure a 4-bbl with good 1100's and 1101's is just over 445 cfm, which is 21 cfm less than the best triple 1.352" venturi 1940 Holley and two 34 Weber IC versions with the 29 mm 1.14 " venturis. With the smallest 1100's, you'd be lucky to get 255 cfm.
If you can report back to us the venturi sizes, and you'll have the peak cfm figures at 255, 318, 392, or 445 cfm. Your peak power will be way low if you only got some 1" venturis.
There are bigger 1940's around with 212 CFM or 149.9 cfm at 1.5"Hg, or about 450 cfm total. The smaller 1940 has a much smaller venturi, and much less power.
The good . The 212 CFM ratings with the 1.352" venturi on 250, 240, 300 and older I block 223 and 262's won't be the same as the generic 144/170/200 item.
It is a big 223/262/240/250 or 300 carb if its PN coded:
R 4454-AAS
R 4468 AAS
R 4509 AAS
R 4520 AAS, additional BPN plate suffix A
R 4522 AAS, additional BPN plate suffix C
R 4523 AAS, additional BPN plate suffix D
R 4524 AAS, additional BPN plate suffix E
R 4525 AAS, additional BPN plate suffix F
R 4526 AAS, additional BPN plate suffix G
R 4527 AAS, additional BPN plate suffix H
R 4528 AAS, additional BPN plate suffix J
R 4536 AAS, additional BPN plate suffix Y (an early 223 replacement)
R 4537 AAS, additional BPN plate suffix Z (an early 262 replacement)
R 4692 AAA
R 4696 AAA
See
http://vb.foureyedpride.com/showthread. ... or-options for further info