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Old 05-29-2010, 08:02 PM
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Rebuilding 400sbc need feedback

400sbc +.30= 406ci
bottom end balanced,
this is what i want...

64cc Vortec heads with .600lift
Lunati Flat Tappet Hy Cam 504/525 lift
Performer RPM Vortec intake
800cfm thunder series carb
1:6 ratio full rocker rollers

or

TRICK FLOW TOP END KIT (FOLLOW LINK PLEASE)
http://www.summitracing.com/parts/TFS-K314-490-440/


ALSO I WANT TO REMOVE THE AC AND ADD A V-BELT, AND I NEED HELPING PICK OUT A STALL CONVERTER.... EVERYTHING HELPS, THANKS IN ADVANCE

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Old 05-29-2010, 09:11 PM
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It will be hard for the vortec heads to come close to those aluminum trick flow heads. I guess depends wether you are after saving money or making power. The vortec heads will be cheaper but the the trickflow top end will make more power. Also depending wether you get a custom converter made or buy one from like hughes or tci you need to look cam timing figures.
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Old 05-31-2010, 06:14 AM
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The trick flow kit is the way I would go over the Vortec set up. The stock Vortec head is a little small on a 400 sbc for performance use.
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Old 05-31-2010, 06:32 AM
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You probably already know this but If you use that trick flow kit, You will need to plan on getting those heads drilled for steam holes. Just putting in my 2%
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Old 05-31-2010, 11:25 AM
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I just finished building a street 406 two months ago. It has vortec heads and I'm pretty happy with it. I can see how it might run out of steam at higher RPMs, but it wasn't worth the extra coin for new heads. I compared stock vortecs to the AFR heads on a dyno program and the projected gains weren't worth 2K for me since I am not going to race it. It's definitely fun to drive though.
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Old 05-31-2010, 12:33 PM
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Quote:
Originally Posted by Fast 4 Door
You probably already know this but If you use that trick flow kit, You will need to plan on getting those heads drilled for steam holes. Just putting in my 2%
So will the vortec heads
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Old 05-31-2010, 02:19 PM
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Quote:
Originally Posted by 86_Z28
400sbc +.30= 406ci
bottom end balanced,
this is what i want...

64cc Vortec heads with .600lift
Lunati Flat Tappet Hy Cam 504/525 lift
Performer RPM Vortec intake
800cfm thunder series carb
1:6 ratio full rocker rollers

or

TRICK FLOW TOP END KIT (FOLLOW LINK PLEASE)
http://www.summitracing.com/parts/TFS-K314-490-440/


ALSO I WANT TO REMOVE THE AC AND ADD A V-BELT, AND I NEED HELPING PICK OUT A STALL CONVERTER.... EVERYTHING HELPS, THANKS IN ADVANCE
Are you still using the stock 400 crank and 5.56 rods? If so, that's a lot of money to invest on a top-half...when you're running a stock bottom-end.
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