You're gettin' there! Keep up the good work. I have not heard of BB chev springs, but why not? It's just a matter of diameters, spring rate, installed height, retainer fitment...

Lou

_________________
Home of Slant6-powered fun machines since 1988

I went to the track today. I have the new head on.
Here's a recap of my car:
225 - .040 over
MP 268 .460 lift cam
Valve head has 318 valves (1.78/1.50) with BB Chevy springs, shaved .100, ported and polished
Gm HEI module with electronic distributor
Offy intake with Edelbrock 500 (deleted the K&N filter)
Clifford headers with 2" dual exhaust
Factory 4 speed with McLeod 10" clutch
Ford 8.8 Explorer rear (3.73 trac-loc), 225 14/70 tires in back.

My best time was 15.75 @ 87 MPH.

I know I can go faster with some fiddling. Now the fun begins. I started at 8* initial and ran a 16.2. I bumped it to 10* and ran the 15.7. I went to 12* and ran a 15.8. I haven't put a dial back timing light on it yet, but I was told the mechanical advance is 20*. The carb is two stages lean (8%). I don't know if the bigger valves are enough to go with a richer set up.

Any thoughts/advice is appriciated.
Thanks again for this website!

_________________
"Nothing in all creation is hidden from God's sight. Everything is uncovered and laid bare before the eyes of Him to whom we must give account."

Sounds like very good progress - congrats! Time to do some jet/rod changes. I found that with my Edel 600 and 500 carbs, they were fastest with pretty close to the stock jets/rods.

Lou

_________________
Home of Slant6-powered fun machines since 1988

Russell Cable

you said your car runs 15's now and you would like to get into the 14's what are you running

_________________
Cuda Progress
The dart as it sits now