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beaumont
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 Posted: Tue Mar 14, 2006 10:06 pm Post subject: stroke or bore? |
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| i have a 1969 chevelle small block race only, bin racing for 20 years or so always used 355 inch motors car has gone a best of 9.94 134.64 it has 5.57 gears powerglide with 1.98 low gear with brake and TCI 5500 8" converter. Just getting tierd of the small motor big rpm but not interested in a big block. Now to my question i would like to get some opinions on stoke or bore i was thinking 421 cid this would have 4.155 bore and 3.875 stroke or 412 this has 4.185 bore and 3.750 either motor would have 4340 crank and rods 14.8:1 mahle piston brodix 18deg heads and intake, roller cam and demon carb. both motors will make good power but witch is the best combo. Car is 2982lb with me in it .And yes rear gears and gear set would have to go. anyone have an opinion. |
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BigBlockLuvr
Joined: 07 Feb 2006
Posts: 5
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| Posted: Wed Mar 22, 2006 11:12 am Post subject: |
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| My feelings, and these are only my feelings - someone can correct me if they disagree, but big block is definitely the way to go!! I was thinking that based on everything you have laid out, and all of the setups, I think the second option is better, I always take bore size first - but that is just me!! Good luck with whatever you decide!! |
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khots
Joined: 17 Oct 2006
Posts: 9
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| Posted: Tue Oct 17, 2006 2:16 pm Post subject: |
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| There's no replacement for displacement! If this is a race only setup why not go big block. Small blocks get lost under the hood of those big A-bodies. |
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davelogan77
Joined: 19 Sep 2006
Posts: 31
Location: in a car
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| Posted: Wed Jan 24, 2007 9:53 pm Post subject: |
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A blown rat motor would be sick in that car, thats my 2 cents.  |
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sc436e
Joined: 20 Nov 2006
Posts: 2
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| Posted: Thu Jan 25, 2007 9:26 am Post subject: |
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| The 3.875 stroke will make more TQ. 4.155 bore will let you bore the block 2 more times. We did a 4.155 X 4.00 with 23 deg heads. In a 2600 lbs car on the 1/8 it went 5.69 best. This was with 1050 carb on gas and PG trans. |
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prostockpuds
Joined: 04 Feb 2007
Posts: 4
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| Posted: Sun Feb 04, 2007 6:37 pm Post subject: |
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| a blown injected big block on alcohol about 500cid should do |
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davelogan77
Joined: 19 Sep 2006
Posts: 31
Location: in a car
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| Posted: Wed Feb 07, 2007 10:42 am Post subject: |
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whatever prostockpud...that should do if your sewing a quilt ...(Granny!),.. Im talking about a TWIN TURBO 600 CID NITROMETHANE INJECTED ALL ALUMINUM DOHC 48 VALVE 20,000 RPM V12!!!!
BOO YA!
I'LL SUE YA!
~ Weird AL Yankovic ~ |
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prostockpuds
Joined: 04 Feb 2007
Posts: 4
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RED7218
Joined: 06 Apr 2006
Posts: 23
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| Posted: Mon May 07, 2007 1:58 pm Post subject: |
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Yeah, We've been hearing tons of rumors concerning the "mini-dragster of tommorrow".
MAKE SURE TO CLICK ON "V8 Engine Video"
http://www.weberprecision.com
_________________
RED7218 |
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