wmw 350 or 455
May 9th, 2010, 01:31 PM
#1
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Join Date: Apr 2010
Posts: 70
wmw 350 or 455
hey everybody I'm new to this site. got a situation I have a 83 olds with a 350 from a 78 cutlass with smog heads. I want to get in the 400hp area and maintain streetability. do you guys think I will be better off with this engine earlier #7 heads and a girldle or just go with a 455 I already have the 350 in the car
May 9th, 2010, 02:28 PM
#2
Past Administrator
Join Date: May 2004
Location: Rural Waxahachie Texas
Posts: 10,020
Welcome to CO. I will leave the answer to some of our engine builders, however you may not get an answer here on this introduction forum. Might be better to re-post your question in the small block forum and give a few more specifics such as your budget and intentions.
May 9th, 2010, 03:18 PM
#3
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Join Date: Mar 2008
Location: North Ridgeville, Ohio
Posts: 422
I'm no expert, but I would do the 455 and leave the 350 in the car till the 455 is done. That way you can still drive it while the 455 is being built. The 350 you have is not the best starting point for the kind of power you want, and will just end up costing you much more money in the long run.
May 9th, 2010, 03:43 PM
#4
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Join Date: Sep 2009
Location: KY
Posts: 1,489
I'm no expert, but I would do the 455 and leave the 350 in the car till the 455 is done. That way you can still drive it while the 455 is being built. The 350 you have is not the best starting point for the kind of power you want, and will just end up costing you much more money in the long run.
May 9th, 2010, 04:26 PM
#5
Seasoned beater pilot.
Join Date: Jan 2007
Location: Chicago
Posts: 5,468
It should be easy to make the 350 fast even with your stock stuff.... if it is nice and round still.
Get a nice valve job& bowl blend, mill the heads down for 10.5:1 compression, Get an edelbrock rpm intake, a cam in the range of 230 duration @ .050, and a set of headers and you should be around 375 horse.
If you don't want to run that high of compression, a 455 with 9:1 should get you around the the same range.
Get a nice valve job& bowl blend, mill the heads down for 10.5:1 compression, Get an edelbrock rpm intake, a cam in the range of 230 duration @ .050, and a set of headers and you should be around 375 horse.
If you don't want to run that high of compression, a 455 with 9:1 should get you around the the same range.
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