Forced Induction Superchargers | Turbochargers | Intercoolers

98 block safe for boost

Old Dec 13, 2006 | 09:24 PM
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Default 98 block safe for boost

looking into building my 98 ls1 for 12-15 psi
would like to keep the cost of the short block down use my block and crank
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Old Dec 13, 2006 | 09:30 PM
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with no problem look at my sig
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Old Dec 13, 2006 | 09:39 PM
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any running examples?

the 98 blocks have thinner sleeves but not looking to overbore just hold some boost
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Old Dec 13, 2006 | 09:48 PM
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I am in the same predicament. I am getting ready to forge my 98 but I am not sure if I will want to re-use my old block. I am trying to keep the costs down as well. I have though about just getting a 6.0L iron block and calling it a day but dont know if I want that extra weight.
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Old Dec 13, 2006 | 10:00 PM
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i would rather find a newer ls1 or look into ls2 6.0 before i went iron

im sure there are many with these older blocks runnin boost but would just like some opinions
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Old Dec 14, 2006 | 03:47 PM
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someone out there has to running boost on one of these older block ????????
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Old Dec 14, 2006 | 03:58 PM
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You can look at some of my posts on my build.I machined and build my stock 98 block with forged stuff and now Im running 14psi on a Mid frame turbo with some nitrous from time to time.I dunno what power Im making but enough to beat 1000cc bikes and run just ahead of a formula with 779 rwhp
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Old Dec 14, 2006 | 04:17 PM
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thats what i like to hear
thanks
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Old Dec 14, 2006 | 05:19 PM
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the block isnt a problem and really neither is the crank, just use good rods , bolts and pistons.
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Old Dec 14, 2006 | 06:09 PM
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what heads....?? please dont tell me 98 heads...... been there, destroyed them......
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Old Dec 14, 2006 | 11:57 PM
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im gonna sell my 98 shortblock soon and put in a newer block either iron or aluminum
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Old Dec 15, 2006 | 01:11 AM
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Originally Posted by NA$TY-TA
what heads....?? please dont tell me 98 heads...... been there, destroyed them......

what do you mean detroyed them?

i have a very nice set of ported 98 heads i plan on using
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Old Dec 15, 2006 | 02:43 AM
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Mine are unported 98 stock heads with a valve job.I havnt had any prolems but my next one will be a iron block.Not sure on the stroke yet.
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Old Dec 15, 2006 | 07:10 AM
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I put 250 + passes, most in the 9s, 12-14psi on a 98 block, stock connecting rods w/arp bolts and ported 98 heads with stock valves and even graphite head gaskets. Engine is still running fine in a n/a head/cam car.

Keep it safe with a good tune and I doubt you will have any problems, guys that are hurting blocks are making a ton of power or have bad tunes. I have seen the later blocks split cylinders as well as the early blocks so I'm sure its possible to get a 'bad' one no matter what the year.
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Old Dec 15, 2006 | 07:27 AM
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thats makes me trust mines a bit more
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Old Dec 19, 2006 | 05:30 PM
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This thread made me feel all warm inside
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Old Dec 19, 2006 | 05:46 PM
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Originally Posted by MawneeC5
This thread made me feel all warm inside
LoL same here...
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Old Dec 19, 2006 | 08:57 PM
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Mine is doing fine so far, Im only running 8 psi and dynoed 500RWHP through the unlocked 4l60. I built the motor to run 14-15 psi, but ATI sent the wrong pulley with the kit. I have a smaller pulley to put on, I just have to find time to put it on and get back to the dyno to retune. Click the link in my sig for details.
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