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Old 01-13-2012, 09:37 PM
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i want to buy 6.0 block from tsp and was wondering what is the bore for a 402 is it just the 4.00 which is what i thought but wen i look at the 402 rotating assemblies on the tsp site it shows the bore as 4.010 so thats my confusion. also i was thinking l92 heads and ls3 intake but cant decide on the cam. there are so many good cams out there. prefferably a cam from tsp i like what i hear about there customer service so i wanna keep as many of my puchaces there as possible thanks.


going in a 2000 camaro
Old 01-13-2012, 09:47 PM
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I think a 402 is a 4.000" stroke crank and stock 4.000" bore. 408 would be 4.005" over bore... i think
Old 01-13-2012, 09:52 PM
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that was my thoughts but look at the tsp sit and go to 402 rotating assembly and look at the piston size it says 4.010
Old 01-13-2012, 09:56 PM
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408 is 4 in stroke with a 4.030 bore if im correct
Old 01-13-2012, 10:00 PM
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yes but what is a 402!
Old 01-13-2012, 11:11 PM
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Anyone confirm

Last edited by 3rdCoastPowerSports; 01-13-2012 at 11:19 PM. Reason: i was incorrect
Old 01-13-2012, 11:37 PM
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Since 350 30 over is 355...a 4 inch stroke 6 liter with stock bore would be 402 bc 30 over is 408...same basic deal as the gen one just difference in decimals
Old 01-13-2012, 11:57 PM
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here, use this:

http://www.csgnetwork.com/cubicinchdispcalc.html
Old 01-14-2012, 12:10 AM
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Just like I said 4 by 4...
Old 01-14-2012, 05:26 AM
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With a 4" stroke and 4" bore ya got a 402. .005 over is 403. And .010 is a 404. So on and so forth. Really it's splitting **** hairs. You're not going to gain hardly, IF any power with 6 more cubes.
Old 01-14-2012, 07:19 AM
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That's for sure...I would at least make sure you go .005 or .010 over just to get a good tight fit, piston to wall clearance wise
Old 01-14-2012, 07:30 PM
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ya the block is going to be brand new from tsp so i will just buy the 402 rotating assembly. thanks for all the help. any suggestions for a cam though i like the ms3 but just want some ideas i want it to be streetable but nasty as hell with like a 3000-3500 stalled a4 so streetable but just barely

thanks brett
Old 01-14-2012, 09:56 PM
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anyone?
Old 01-14-2012, 10:37 PM
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And ms3/4 would run good in a 402 bc those cubes eat up that duration and like it! Should still be driveable on the street bc you won't have to worry bout low end torque wit that big of cubic inches
Old 01-14-2012, 11:07 PM
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why not there "giant" cam they offer?

http://www.texas-speed.com/p-1155-te...-camshaft.aspx
Old 01-15-2012, 12:02 AM
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yea that cam looks like a good for your motor...it is on the biggger side but it will still be bad *** especially if you pair it with some good 235cc port heads (or any good aftermarket head)
Old 01-15-2012, 12:25 AM
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ya im gonna use the l92's with the ls3 intake. what about the ptv clearance with the giant and also streetability
Old 01-15-2012, 12:26 AM
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Originally Posted by MY_2K_Z
ya im gonna use the l92's with the ls3 intake. what about the ptv clearance with the giant and also streetability
if your using the ls3/l92 topend your going to want a custom cam, that setup tends to like a diff grind to work well
Old 01-15-2012, 12:44 AM
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cool ill look into that. i was just looking at the giant and it doesnt seem that insane. if any one on here has a stroker motor and has ran the giant can u give me some likes and dislikes about the cam. these are the specs so everyone can see Giant 248/254 .615"/.622" Camshaft
Old 01-15-2012, 12:49 AM
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the square port LS type heads respone very well to wide split durations, especially for NA applications, try this one:

cam card
http://www.compcams.com/Company/CC/c...csid=1415&sb=0

cam
http://www.compperformancegroupstore...de=GEN3CamsLSR


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