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Thread: 383 or 402 0r 408??????
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03-13-2009, 03:01 PM #1
383 or 402 0r 408??????
which 1 u rather go wid for new block...383-402-408 or any other suggestions????
B.T.W....i got 02 z28 A4....wanna new block for it......help me out guys..
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03-13-2009, 03:33 PM #2
408 IMO....... plus the 383 is a waste of money just my .02
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03-13-2009, 03:49 PM #3
............
Any1 knw anythin about the zl402 from slp???? any good?
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03-13-2009, 03:52 PM #4
did you look at texas-speed.com they have some good setups take a look if you want
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03-13-2009, 04:02 PM #5
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03-13-2009, 05:03 PM #6
it depends, what is ur goal with the car?
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03-13-2009, 06:22 PM #7
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03-13-2009, 06:53 PM #8
- Join Date
- Aug 2005
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- Thornton, CO
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- 23,773
Red Tint Jewelcoat- 2008 Trailblazer SS
Stay away from the SLP shortblocks.
Heard more bad than good.2008 Trailblazer SS
Yank PTB3600, Kooks 1 7/8" LT's, 4" intake, E-fans, Magnaflow, Sonnax kit, tranny cooler, tune.
Lowered, HID's, tinted.
1999 Pontiac Trans Am WS.6 #1747 SOLD
531.1 RWHP 481.3 FT/Pounds all motor.
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03-14-2009, 03:47 AM #9
the old adage is "there's no substitute for cubic inches", so 408.
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03-14-2009, 04:59 AM #10
depends on what your wallet has and what you want. you can have 500 rwhp with a 346 all motor
you can have 425rwhp with a 408. it all depends on your budget. alot of ppl spend money on strokers and dont have the rest of money for supporting mods.
402 and 408 same motor with same performance. .030 isnt going to net much if any difference in performance. 383is a decent build and depending if you use your 5.7 block its still aluminum or if you chose to use a 4.8/5.3 block then youl have a iron block 383
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03-14-2009, 07:00 PM #11
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03-14-2009, 07:08 PM #12
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03-14-2009, 07:35 PM #13
I am a fan of the 383.
you can make high 400s no problem.
But are you looking for a dyno queen or is there a certain 1/4 mile time your looking for?
What is ur budget?
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03-14-2009, 07:38 PM #14
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03-14-2009, 07:39 PM #15
Oh yea very true.
lt1>ls1 ; )
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03-14-2009, 09:54 PM #16
good set of heads, ported fast 90 with a good cam, 1 7/8 headers, true duals dialed tune, compression. its nothing new to do. the TQ is what lacks some but its been done.
here is a link to a 502rwhp build on a 346
http://www.ls1tech.com/forums/dynamo...02rwhp-na.htmlLast edited by Quik; 03-14-2009 at 09:59 PM.
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03-15-2009, 04:01 PM #17
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03-15-2009, 04:14 PM #18
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03-15-2009, 04:49 PM #19
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