I have a 69 convertible with the original 350.
My engine is setup as follows:

3932388 Block
3932441 Heads 1.94/2.02 76.26 cc
3905393 Intake
7029202 QJet
1111955 Distributor with Pertronix conversion
Dynomax Headers
Flat top pistons...maybe 9:1
XE262 cam

Trans
I just swapped the original TH350 for a 2004R.

Rear
12 bolt posi with 3.73 gears.
TA Radial 245/15/60 on the back

I'm thinking that my engine makes about 300HP. I haven't taken it to the track, but I was thinking that it should be low 15's? Does that sound close?

If I wanted more power what would be a good intake? How much HP would I be able to pickup with a better intake? What about heads? What is a good set of heads to put on? If I changed both heads and intake how much more power could I make and would I be able to get into the 13's with those changes?

I'm just wondering how much I could get out of my car without adversly effecting the streetability of it.

with the stock flow numbers for those 441 heads, and with a free flowing exhaust... the desktop dyno says you should be spitting out 298 horses @ 5000rpm and 398 ft. lbs. torque @ 3000rpm.

Plugging those numbers into the desktop drag... with your car specs... '69 Camaro... etc, etc...

Says you should run around a 14.20 @ 99mph if you leave the line at 1500rpm and shift around 5500. You didn't mention a torque converter... so I guessed on that too.

Heads and an intake change would net you some big gains in power. Those 441 heads can be worked over to gain some flow, but aftermarket heads are where its at for small blocks. The 441 flow numbers are kind of crappy... peak flow is 203cfm intake and 146cfm exhaust.

Even swapping to some 462 castings (that flow 218cfm intake in stock form with 1.94 valves) will bring your power output up to...
307 horses @ 5000rpm and 410 ft. lbs. torque @ 3000rpm.

As for aftermarket heads... leaving the rest as is (not taking into account that some heads have smaller chambers) here are some more popular ones...

These are all just desktop dyno figures, so they probably aren't dead accurate.

Vortec Iron heads (170cc runners, 1.94/1.50 valves) cost - $450/pair.
355 horsepower @~5250rpm. 412 ft. lbs. torque @ 3500rpm.

Edelbrock RPM aluminum heads (170cc runners, 2.02/1.60 valves) cost - $935/pair.
359 horsepower @5500rpm. 413 ft. lbs. torque @ 3500rpm.

Trick Flow 23 degree aluminum head (195cc runner, 2.02/1.60 valves) cost - $950/pair.
362 horsepower @5500rpm. 414 ft. lbs. torque @ 3500rpm.

Dart Iron Eagle 180cc head (180cc runner, 2.02/1.60 valves) cost - $700/pair.
356 horsepower @ 5500rpm. 417 ft. lbs. torque @ 3500rpm.

Pro Topline Pro Lightning 180cc head (180cc runner, 2.02/1.60 valves) cost - $1050/pair.
378 horsepower @ 5500rpm. 418 ft. lbs. torque @ 3500rpm.

AFR 190cc head (190cc runner, 2.02/1.60 valves) cost - $1250/pair.
385 horsepower @ 5500rpm. 420 ft. lbs. torque @ 3750rpm.

Hi Paul, you are set up similar to my 67 RS except I have an edelbrock performer intake and carb. Last time at the track I was running 14.5 consistantly.

Thanks for the info!

If I made the changes and the engine was then putting out 350HP or so....What would 50HP take my times to? Would 50HP drop me .5 seconds in the qtr? Just curious....