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lq9 vs ls1 in 99 trans am

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Old 11-02-2009 | 01:22 PM
  #21  
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With the lq9 you have a 4" bore so you can run bigger valves then with the ls1 but you will have more weight. But if you are not going to swap for better heads in the future stick with the ls1 shortblock. I would say run the ls1 shortblock with milled 317 lq9 heads and that ms3. The head milling wont cost very much.
Old 11-02-2009 | 07:15 PM
  #22  
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From: fort Smith,AR
Default thanks goldy

Originally Posted by gold98Z28
can you tell us what is "not good" if there is nothing "bad"?? dont believe everything you read on the internet... i would hope since he is planning on a high revving cam that he would at least put rod bolts in either, and check the rod bearings while there. do that and the 98 block will be good to go.

no matter what he takes off the nose, he always could have done that with the lighter block also and always could have been lighter. 90lbs isnt a big deal to you maybe, that dont mean its not a significant factor. handling and traction will not be optimal in stock form without suspension mods to set it up for the extra weight.

im not just talking out my *** here, i have a 6L in my car, and if i had it to do over again. i would not put the extra wieght on the nose unless i was A. going forced induction, or B. building a strocker 408 to have enough power to offset the extra wieght. still yet an ls2 block would be better for the stroker, but im a cheap *** so i probably wouldnt do it. lol



i have a baby cam in mine 224/228 .581 .588 114LSA and put down 400rwhp/400rwtq. stock milled 317 heads and ls6 intake.

that 228/23x cam you mentioned will make a very nice driver with gobs of tq and plenty of power under the curve

i like the way u think... so u opinion is 98block better rod bolts and milled 317.. and yes i plan on ls6 intake... did u put down 400 through a4?




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