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Old 04-22-2013, 07:09 AM
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big block chevy and pump gas commpression

Hello.. I'm almost in the market for new heads for my long awaited 496 build , well it's a 489
back in the day when I was young and single I bought heads to make my chevelle fly at the track with 345cc ports.. that everyone in their brother is say'n is way to big for the use the engine will see now..
more a street car with track time.. than a ballsout redheaded stepchild..
any ways , a guy is surpost to come look at my heads(fingers crossed) and this will allow me to get heads more inline with the engines use now..
my dome pistons (18cc) if I read correctly will give me a 10.2 to 1 compression in a perfect world.. in a 118 chambered head..
the heads I'm looking at (brodix) come in 119 and 115cc chambers
with either 294/305/312 intake port cc
what compression is about it on street pump gas..(at the moment it's 94 at sunoco, 93 everywhere else)
here is the cam that I own . it's a solid roller, may change it to a hyd roller if I can swap one for one.. unless my fears of the solid roller failure in a cam like this(mild for a solid roller) won't be an issue


was looking at heads and man o man is there a ton of choices now..

the vehicle is 3900 lb and at the moment(subject to change) would be th4003500stall(would like to run my 2004r3000stall we'll see about building it to live) a 4:11 rear with 26-28" tall tires..
think fun,wild hair street vehicle, that will at times,more offen than not be driven like it was stolen..
oh and it may see the holley hp efi at some point if I can save enough pennies..
and will get hit with happy gas at the track if it ever hooks(pick up)
but thats down the road a bit,if ever.. traction issues with a bbc in a p/u will be hard to overcome
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