LS7 lifters with a GM 847
Registered User
Joined: Sep 2001
Posts: 4,152
From: Woodstown, NJ
Finally somone that doesent think just because it's written on a forum it's true! Thanks for the insite into a normal rebuild that's not going to break the bank.
I'm really going to stir things up by using the stock crank, a set of scat rods and forged Speed Pro pistons, ballance it, and reve the sh*t out of it, to get peak power out of the 847. I'm also going to use my stock Opti a Lt4 extreme duty timing set, LS7 lifters, SA CC Pro Mags, Pac 918 springs shimmed properly and measured push rods. All the stuff in my sig. And give it 150 shot when ever i feel someone's getting to close. I've done ALOT worse to a regular SBC and they never flew apart..... In fact this will be my first set of after market rods to beat on.
I'm really going to stir things up by using the stock crank, a set of scat rods and forged Speed Pro pistons, ballance it, and reve the sh*t out of it, to get peak power out of the 847. I'm also going to use my stock Opti a Lt4 extreme duty timing set, LS7 lifters, SA CC Pro Mags, Pac 918 springs shimmed properly and measured push rods. All the stuff in my sig. And give it 150 shot when ever i feel someone's getting to close. I've done ALOT worse to a regular SBC and they never flew apart..... In fact this will be my first set of after market rods to beat on.
Oh wait - I posted it on a forum so it can't be true. And after all that you're still going to use self-aligning rockers?
Sounds like you already made up your mind before I even posted. Oh well.
Thread Starter
Registered User
Joined: Jun 2006
Posts: 919
From: New Brunswick,Canada
So, I will have to change the RR, but the reason for this post was not about the cam I'm using, but about what I should use for lifters. Comp R's , LS7's or something else that will work well and wont blow my budget.
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Registered User
Joined: Jun 2006
Posts: 919
From: New Brunswick,Canada
[QUOTE=WS6T3RROR;6505601]No it will bind if you run plates with sa rockers. Having said that there is nothing really wrong with sa rockers as long as valve control is up to par. In fact to a point its actually more stable. There is however some trade off for durability.
Great, how do i get good valve control, and what are the trade off's?
Great, how do i get good valve control, and what are the trade off's?
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Joined: May 2002
Posts: 315
From: Mt Sterling KY USA
The LS7s are capable of that, but then again so are the originals.
The LS7s are a cheap replacement so everyone seems to say you "have to have them" but in reality they have not been shown to be any better than what came stock in your car.
It amazes me how people "save" money buying mediocre parts and then waste it on unnecessary parts all in the same build.
If your signature is accurate I would reuse the 503 over the 847 and put the savings towards a bigger TB, suspension work.
The LS7s are a cheap replacement so everyone seems to say you "have to have them" but in reality they have not been shown to be any better than what came stock in your car.
It amazes me how people "save" money buying mediocre parts and then waste it on unnecessary parts all in the same build.
If your signature is accurate I would reuse the 503 over the 847 and put the savings towards a bigger TB, suspension work.
Last edited by hvyss; Oct 16, 2010 at 08:11 AM.
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Joined: Feb 2004
Posts: 4,800
The LS7s are a quality inexpensive replacement.
If you have the cash to do the rest of the job right AND still buy them so you can use "new" parts GREAT.
The problem I see is guys buying a LOT of other parts because they are "cheap" and then buying the LS7 lifters in addition when that $100 could have been better spent elsewhere and just reused the stock lifters which will also work fine to 7000rpm.
If you have the cash to do the rest of the job right AND still buy them so you can use "new" parts GREAT.
The problem I see is guys buying a LOT of other parts because they are "cheap" and then buying the LS7 lifters in addition when that $100 could have been better spent elsewhere and just reused the stock lifters which will also work fine to 7000rpm.
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