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Boosted 350 or N/A 383

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Old 08-11-2017, 02:27 AM   #1
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Boosted 350 or N/A 383

Hi i'm having a hard time picking between these two choices: https://www.summitracing.com/parts/mll-bp3503ct1 that has a procharger on it with 9 lbs of boost or https://www.summitracing.com/parts/m...3ct1/overview/ N/A

My goal is a fun street machine that makes 500hp at lest, i'm not doing this swap anytime soon i'm only going to when my l98 starts to go.

I just would like to know what would be better in the long run.
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Old 08-11-2017, 07:12 AM   #2
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Re: Boosted 350 or N/A 383

Well that 383 isnt making 500 hp and not with out doing heads and cam swap so why buy the long block anyway?

I like procharger idea but it isnt cheap
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Old 08-11-2017, 03:15 PM   #3
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Re: Boosted 350 or N/A 383

500hp is my end goal i have no problem with buying new heads and cam for that 383, and i had another thread about should i upgrade to the 350 ho but after that i saw some great videos and forums about people switching to a 383 and how much they love it.

I had some friends of mine say oh just buy a pulled 350 from somewhere and work on that, the only problem is that i wouldn't know where to begin or how much it would cost for my goal thats why i want to start as close as possible and work my way there.

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Old 08-11-2017, 03:25 PM   #4
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Re: Boosted 350 or N/A 383

You are better off building what you want through a reputable builder instead of buying that crate and then tearing it apart to install new heads and cam
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Old 08-11-2017, 03:37 PM   #5
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Re: Boosted 350 or N/A 383

Yeah i really want to do that 350 supercharger up there but i don't think i'll make it to my goal, i'm also trying to figure our compression ratios and safe levels for boost i'm kinda having a hard time figuring all this out.

Last edited by SketchyZed; 08-11-2017 at 05:30 PM. Reason: Needed to add something
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Old 08-11-2017, 05:55 PM   #6
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Re: Boosted 350 or N/A 383

500 is easy with just a few psi. You dont need a whole lot for that

A strong all motor 350 can do 500 at crank
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Old 08-11-2017, 06:10 PM   #7
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Re: Boosted 350 or N/A 383

Oh okay thank you for that but the compression ratio is not clicking with me, i'm trying to figure out how much boost i can run safely with that Blueprint 350. Should i lower the compression with a higher combustion chamber head?
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Old 08-11-2017, 06:24 PM   #8
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Re: Boosted 350 or N/A 383

I'd leave it alone. Just run colder thermostat to keep coolant down. Be sensitive with the tuning and timing especially. Throw in a proper cam and it will be fine.

No reason you cant make 12 psi on that deal intercooled and exceed the hp goal. Probably will do it on 7-8 with a cam
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Old 08-11-2017, 06:50 PM   #9
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Re: Boosted 350 or N/A 383

Okay the kit from Procharger says the High Output Intercooled System with P-1SC runs 9, 12 psi. Something i will most likely do is get the motor swapped then sell the old l98 get a new cam for that new 350 then start saving for that supercharger.
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Old 08-11-2017, 06:54 PM   #10
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Re: Boosted 350 or N/A 383

Can you find a local machine shop to rebuild the L98? That might be more cost effective as you can setup the motor exactly how you want with proper clearances and ring gaps for boost. Put a good piston in it and scat 7/16 bolt rods and reuse stock crank
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Old 08-11-2017, 07:05 PM   #11
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Re: Boosted 350 or N/A 383

Yes i do and a transmission shop a block or two down the road, only problem is that there is not a tuning shop near me so i have to tune it myself

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Old 08-11-2017, 07:38 PM   #12
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Re: Boosted 350 or N/A 383

Do you think this would be a good street build? I do love torque, and i will be sticking with stock tpi.
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Old 08-11-2017, 07:52 PM   #13
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Re: Boosted 350 or N/A 383

Yeah. Tpi and blowers make great torque combos.
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Old 08-11-2017, 07:58 PM   #14
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Re: Boosted 350 or N/A 383

Okay well thank you for the help, right now i'm problem gonna work on trans or suspension next to get everything ready for that kind of power.
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