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Heads/Cam Question

This is a discussion on Heads/Cam Question within the Internal Engine forums, part of the LSx Technical Help Section category; Originally Posted by M-Ten i know but i'm asking, isn't the lower cc better? 59 > 64? Usually for power ...

  1. #61
    Senior Member Bottesini's Avatar
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    Quote Originally Posted by M-Ten View Post
    i know but i'm asking, isn't the lower cc better? 59 > 64?
    Usually for power yes. Some might run into drivability issues with high compression since they might have to run higher octane gas. Others might plan on taking the boosted route as well, which is another reason to not have high compression, otherwise you can not run the higher boost.

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    I run my 408 stroker 3 times a week to work totaling 90 miles a day at 11.1 compression and have no problems....

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    Quote Originally Posted by M-Ten View Post
    i know but i'm asking, isn't the lower cc better? 59 > 64?
    the lower the cc the higher the compression, which means the more horse power but with higher compression you have to run higher octane gas...

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    I lika da Chevy's LETHALxLS1's Avatar
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    The only way something would be "better" is if it works better for whatever plans you have for the car. If you dont mind running higher octane like the man above said and you dont plan on a turbo in the future then go with the higher compression ratio which like previously mentioned would be the lower number cc. If you want to run a lower octane fuel and maybe one day plan on a turbo then go with the higher cc. I was told the best way to get the most out of you money and mods is to sit down and plan what realistic goals you have for your car, what mods will get you to your goal and what order would be the best to put the mods on. It makes sense.

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    Quote Originally Posted by M-Ten View Post
    Oh ok, so between the intake man/tb/afr heads you got 50 hp.. i was gonna say 50 hp from the heads seemed like a lot

    Anyway, I'm still unclear on what setup I want to run.. so many options out there.
    I picked up 50 rwhp when I was a cam only car (TV2) with 98 stock heads and I change to TSP PRC Stage 1s. Track times picked up over .50 second in the 1/4 mile. So yea you can pickup 50 rwhp from a head change. Y'all need to take a moment and fill out you signatures. Because a M6 is gonna dyno higher than an A4. Not to mention the effect different stall convertors have on dynos. Fast 90/90 setups can add 30+ hp. And any setup you choose from TSP if tuned correctly will drive great around town.

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    TSP 347 SB, TSP Stage 2.5 PRC LS6, TSP MS4, Performabuilt Stage 2 4L60E, Yank PT4000, 4.11s, Fast 90/90, FTRA Cold air intake+all the free mods, Dynatech Supermaxx Exaust System, DMH Cutouts, Hooker Catback/FTRA Tips. Tuned by RPM/Garner NC. 11.28@119

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    Quote Originally Posted by LETHALxLS1 View Post
    The only way something would be "better" is if it works better for whatever plans you have for the car. If you dont mind running higher octane like the man above said and you dont plan on a turbo in the future then go with the higher compression ratio which like previously mentioned would be the lower number cc. If you want to run a lower octane fuel and maybe one day plan on a turbo then go with the higher cc. I was told the best way to get the most out of you money and mods is to sit down and plan what realistic goals you have for your car, what mods will get you to your goal and what order would be the best to put the mods on. It makes sense.
    Very well spoken....

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    Quote Originally Posted by 99Ls1fever View Post
    the lower the cc the higher the compression, which means the more horse power but with higher compression you have to run higher octane gas...
    Very true...

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    Well you shouldn't have to run any higher than 93 octane, right? I run 93 anyway.

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    Quote Originally Posted by LETHALxLS1 View Post
    The only way something would be "better" is if it works better for whatever plans you have for the car. If you dont mind running higher octane like the man above said and you dont plan on a turbo in the future then go with the higher compression ratio which like previously mentioned would be the lower number cc. If you want to run a lower octane fuel and maybe one day plan on a turbo then go with the higher cc. I was told the best way to get the most out of you money and mods is to sit down and plan what realistic goals you have for your car, what mods will get you to your goal and what order would be the best to put the mods on. It makes sense.
    Lethal how have you been long time no talk...lol

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    Quote Originally Posted by M-Ten View Post
    Well you shouldn't have to run any higher than 93 octane, right? I run 93 anyway.
    93 octane is good to 11.5 to 1 compression ....

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    Quote Originally Posted by NeeD4SpeeD View Post
    Very true...
    I like the way we think....

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    Quote Originally Posted by M-Ten View Post
    Well you shouldn't have to run any higher than 93 octane, right? I run 93 anyway.

    That's what I was wondering too. I always run 93, and wondered if it's good enough for 59cc

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    Quote Originally Posted by shaggsm3ls1 View Post
    That's what I was wondering too. I always run 93, and wondered if it's good enough for 59cc
    o yea, i run 91 cause in colorado we don't have 93 octance and i know three guys including myself that have 11.1 compression and we run 91 octance pump gas...

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    Quote Originally Posted by 99Ls1fever View Post
    o yea, i run 91 cause in colorado we don't have 93 octance and i know three guys including myself that have 11.1 compression and we run 91 octance pump gas...
    Awesome, what I wanted to hear

    99ls1fever-could you check my thread and let me know what ya think?

    Good combo or 99-02 LS1??

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    Quote Originally Posted by shaggsm3ls1 View Post
    Awesome, what I wanted to hear

    99ls1fever-could you check my thread and let me know what ya think?

    Good combo or 99-02 LS1??
    hell yea is a good combo, but hot rod magazine did a write up on intakes, and for the money the LS6 is the best for your money and only costs half of the fast 90 and in the comperrison it was only a 6 hp differance.... but yea good combo, I would expect a gain of over 100 horses... that is a dirty set up....

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    Read my post to your post please

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    fever, I thought the FAST was a LOT better than the LS6

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    Quote Originally Posted by 99Ls1fever View Post
    Lethal how have you been long time no talk...lol
    Hey bud- pretty good! How is the BEAST of a car runnin for ya??

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    Quote Originally Posted by M-Ten View Post
    fever, I thought the FAST was a LOT better than the LS6
    yea in October issue of Hot Rod Magazine they compare the 75mm stock ls6 intake, the ls1 intake (shitty), the ls2 intake(shitty) both ls1 and ls2 lost hp...and the Fast 90/90 and there is only 6.6 horse power differance in the fast and the ls6 intakes. (not very much for hp to money ratio...you can pick up a ls6 intake through summit racing for $485 compared to $1,198 bucks for the fast 90/90 set up... the ls6 rocks, people never believe me till they look that article up...lol

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    Quote Originally Posted by LETHALxLS1 View Post
    Hey bud- pretty good! How is the BEAST of a car runnin for ya??
    Like a champ minus the snow forecast we have for later today, my car hates the snow, and is a b-tch in the snow to control even with all the suspension mods... when are you going in for your back?

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