461 with 8.1 compression solid roller 666/623 256/260 duration @.50
049 oval ports (bowl blend 2.19 1.88) victor junior 950 hp
turbo 400 ------was a holeshot 3000
now is a PTC 4200
4.11 gears

car is a 78 malibu with full cage and transbrake, previous best was a 11.51 @117 with a 1.64 60 ft.

PTC said 11.teens that would be wishfull thinking, but i think 11.20-11.30...?

Maybe a tenth or two, why is your compression so low. I'd say its doing pretty good for what it is.

Maybe a tenth or two, why is your compression so low. I'd say its doing pretty good for what it is.

Exactly, I think money would be well spent in upping the compression.
Or leave it and put some boost on it. :yes:

well, it was a $600 motor carb to pan. all stock and it had closed chambers on it and its a flat top motor. i put my open chambers on it because of running a solid roller and i figured whats the worse that could happen.

Why did you swap heads?

they had the larger valves with the matching springs to the cam and i had just had them freshened. its deffintily lacking in low end power, however it has ran a 10.55@ 128 on a 125 shot its 1st time on the bottle....

For the $ you spent on the stall you could have gotten some pistons and got the comp up to 10:1 - then it would run 10s even with the old stall. Spend the $ where it counts. MHO

the converter was $350. i have another BBC just needs assembled. but its only going to be 9 to 1. but that better than 8 to 1 (and thats just a guess could be lower)

.05-.1 max. I hope I'm wrong, but the 60', 1/4 ET and MPH all jive pretty well. Good luck.

ill post results later in March when track opens. i think 11.30s are there if not a little more. but knowing how it usually goes i probably slowed it down. lol

I think 11.51 @ 117 MPH is impressive for an 8 to 1 454 n/a and it runs mid 10's on spray...NICE!! :thumbsup:

I predict a good solid 2 tenths ET reduction with the new convertor

Its hard to be critical as good as you are running. Its also good to know you can run on any kind of pump gas available.

I think you should go mid to high 11.30's. Good luck