ls1 guys look in

Syn

Syn

Forum Member
theres so many opinions on ls1tech i just want to get some opinions from here.
i've got a lot of questions i hope i can get answered so i can put this together in a few weeks.

i'm build a iron 408 stroker for my 98 camaro. hopeing for 500rwhp

dont want it to be a straight up strip car but it won't be a d/d

i want to do things once and do them right.

--heads are the l92's looking for a shop who has delt with l92's to get them ported

not sure on a cam yet since not alot of people like to share their cam specs

my pistons are flat top diamonds withvalve reliefs, how much am i going to have to mill my heads to get a c/r that is safe with 94 octane, i'm thinking 12.5:1 would be a max maybe? not 100% sure.

also what thickness headgaskets should i run and where to get them for a 4.030 bore

valve srings?

what timing chain should i use and oil pump?

lifters?

since i have a iron block what valley cover do i use, are the front and rear covers the same as the ls1's?

i just have so many questions :(

thanks to anyone who can help
 
theres so many opinions on ls1tech i just want to get some opinions from here.
i've got a lot of questions i hope i can get answered so i can put this together in a few weeks.

i'm build a iron 408 stroker for my 98 camaro. hopeing for 500rwhp

dont want it to be a straight up strip car but it won't be a d/d

i want to do things once and do them right.

--heads are the l92's looking for a shop who has delt with l92's to get them ported Livernois Motorports has them already done up w/ manley valves (stock valves aren't the greatest) Dual spring good to .680 lift, and manley titanium retainers

not sure on a cam yet since not alot of people like to share their cam specs

Again, Livernois has done quite a few of the L92 Combos

my pistons are flat top diamonds withvalve reliefs, how much am i going to have to mill my heads to get a c/r that is safe with 94 octane, i'm thinking 12.5:1 would be a max maybe? not 100% sure.

Generally speaking 11~11.5 is the "limit" for pump gas on an aluminum head, yes you can do more, people ahve done it, but you cant get 94 everywhere, so I would say 11.5 would be my max

also what thickness headgaskets should i run and where to get them for a 4.030 bore

I would say .040 since you are concerned w/ compression (in terms of increasing it) then you would have to "mill" the heads less providing better durability

valve srings?

see my above statement about the livernois springs, they are 3 steps above the patriot "gold" and use name brand retainers, not mystery meat. they rate them to .680 lift, but have a few apps above .710 with no issues

what timing chain should i use and oil pump?

JPP chain, they run 89.99 @ Detroit Speed Shops, it is a billet double roller, I would run an LS2 oil pump

lifters?

ls2/ls7 are all you need

since i have a iron block what valley cover do i use, are the front and rear covers the same as the ls1's?

ls6 valley cover is preferred, but ls1 will work. ls1/2/6 front and rear covers work
 
Whats the port volume on these heads ? No offense here dude but I see limited sucess with any ported l92 casting. Best thing anybody could do is work the valvejob.

As of yet Livernois has yet to produce results and better or worse then anyone elses at the track. I am included in this group. Sounds like alot of very pricey parts ya don't need.

LS2 chain. Works great, Same chain in the ls7.

Use the patriot gold Extreme valve springs. Cheap and easy to get.

I would not run a compression ratio as high as 11.0 or higher. the l92 chamber is to slow. I would go 10.3:1 max. You need to be able to put spark advance in the motor to get the chamber to work. To much compression and it'll be a total dog.

The valley cover will depend on the block you are using.

As for the oil pump all of the oil pumps are essentially the same. the newer 5.3 FWD vehicles got the best oil pump but i can't remeber the part number.

If you want some frank honest experience hit me up at the shop. I don;t make money selling part for HiPo applications so I could give to craps what you run.


Sean


88ls1blazer said:
Livernois Motorports has them already done up w/ manley valves (stock valves aren't the greatest) Dual spring good to .680 lift, and manley titanium retainers


Again, Livernois has done quite a few of the L92 Combos


Generally speaking 11~11.5 is the "limit" for pump gas on an aluminum head, yes you can do more, people ahve done it, but you cant get 94 everywhere, so I would say 11.5 would be my max


I would say .040 since you are concerned w/ compression (in terms of increasing it) then you would have to "mill" the heads less providing better durability


see my above statement about the livernois springs, they are 3 steps above the patriot "gold" and use name brand retainers, not mystery meat. they rate them to .680 lift, but have a few apps above .710 with no issues


JPP chain, they run 89.99 @ Detroit Speed Shops, it is a billet double roller, I would run an LS2 oil pump


ls2/ls7 are all you need


ls6 valley cover is preferred, but ls1 will work. ls1/2/6 front and rear covers work
Click to expand...
 
ls2 front cover is differant
use an ls2 chain.
mls gaskets are .054
what size relief? probably 2 cc
with 2cc and the 69.8cc heads the compression will be about 11.3
stock flow numbers are like 328 and 214 @ .600 which seem good except for the fact they have about a 260cc intake runner
 
Last edited:
Whats the port volume on these heads ? No offense here dude but I see limited sucess with any ported l92 casting. Best thing anybody could do is work the valvejob.

280cc runner

As of yet Livernois has yet to produce results and better or worse then anyone elses at the track. I am included in this group. Sounds like alot of very pricey parts ya don't need.

So you are saying no one has issues w/ the stock valves?

Also, JDP has had some very good NA numbers with Livernois heads considering the rest of his combo is setup for spray, and he has bone stock everything (other then tires and a clutch that you can tell was slipping hard at the track)

I would also state that they cant exactly control the driving skill level of their customers, although everyone has been quite happy with their results that I have talked to.

http://www.ls1tech.com/forums/showthread.php?t=804746

LS2 chain. Works great, Same chain in the ls7.

LS2 chain is a good part, I prefer the double roller because it gives the (easy) ability to degree in the cam

Use the patriot gold Extreme valve springs. Cheap and easy to get.

The patroit extreme spring is better then the gold, but even per the manufacturer of the Livernois, P*, and M* springs the order of quality/ability goes like this starting at the bottom P.G., P.E., M.N.T, Livernois spring, and they do make one step higher but it is a solid roller only spring. I am not saying anything negative about these other products, they all work, and many people run all of them w/ good results. I am just stating what I know about the springs.

I would not run a compression ratio as high as 11.0 or higher. the l92 chamber is to slow. I would go 10.3:1 max. You need to be able to put spark advance in the motor to get the chamber to work. To much compression and it'll be a total dog.

I once again bring up JDP's car, IIRC it's 11.5:1 it's no slouch, also the factory L92 comression is 10.5 and LS3 is 10.7 same head on both, just a valve difference :dunno:

The valley cover will depend on the block you are using.

Assuming it is an iron block like he stated, the listing that I gave would be accurate

As for the oil pump all of the oil pumps are essentially the same. the newer 5.3 FWD vehicles got the best oil pump but i can't remeber the part number.

agreed, any of the VCT engines got the best pump, but an LS2 is usually the preffered piece to most engine builders

If you want some frank honest experience hit me up at the shop. I don;t make money selling part for HiPo applications so I could give to craps what you run.

I'm not sure IF you're implying something, but just to clarify I don't make money selling parts either. I do work for a parts retail shop, but anyone that knows me knows I am brutally honest when it comes to recommendations

Andy
 
Sean said:
As of yet Livernois has yet to produce results and better or worse then anyone elses at the track. I am included in this group. Sounds like alot of very pricey parts ya don't need.
Click to expand...

Nice bashing another sponser Sean.:rolleyes:

Sean said:
If you want some frank honest experience hit me up at the shop. I don;t make money selling part for HiPo applications so I could give to craps what you run.
Click to expand...
So you have a dyno but you don't give a shit what your customers run at the track??
You have talked all kinds of technical shit for years now, but I have yet to hear of a fast car coming out of your shop!! Again, nice bashing another sponser!!:rolleyes:
 
Syn said:
theres so many opinions on ls1tech i just want to get some opinions from here.
i've got a lot of questions i hope i can get answered so i can put this together in a few weeks.

i'm build a iron 408 stroker for my 98 camaro. hopeing for 500rwhp
Click to expand...

I have the same setup you are looking at. Sean's Mustang dyno is pretty stingy, but the gains are there. It went from 300 to 440 on the HP and 280 to 400 on the Torque. The compression on it is barely 10:1, so the winter project is to get closer to 11:1 (more milling and thinner head gaskets).

The car is still on the road if you want to check it out sometime. I work in Warren and live in Pontiac and can meet you anywhere in between.

-Geoff
 

Attachments

  • B347vs402l92.JPG
    B347vs402l92.JPG
    90.6 KB · Views: 170
where are you getting your shortblock? or what are your plans for the bottom end? any idea on $$
I was thinking about going to a stroker for my 6.oL but I am still looking at the budget and a good combo...a sponsor with a good deal:)
 
Right sponsor bashing when I am saying that nobody has any real good l92 results from the track.Including us. Hmm. I do care about what my customer run at the track. Thats why i go out to the track with my customers to dial their cars in when they request it and I offer it.

As for turning out fast shit. Yeah we do that. But some stuff I can;t talk about becuase its sublet from other shops. We have tunned cars in the 7's and 8's here and done very well in doing so.

I don't think this particular combo he is building will benfit from ported heads.An exspensive timing chain etc etc etc, Especially with the intake being the limiting factor in the whole combo.

Knowing what I know now though I would totally rethink Whitehawks camshaft becuase while it was a good first effort I know I can get alot more out of it. But I am not really in the parts sales bussiness, so as I siad I don't care who's crap he runs.

Sean

QWKSLVR said:
Nice bashing another sponser Sean.:rolleyes:


So you have a dyno but you don't give a shit what your customers run at the track??
You have talked all kinds of technical shit for years now, but I have yet to hear of a fast car coming out of your shop!! Again, nice bashing another sponser!!:rolleyes:
Click to expand...
 
Last edited:
QWKSLVR said:
Nice bashing another sponser Sean.:rolleyes:


So you have a dyno but you don't give a shit what your customers run at the track??
You have talked all kinds of technical shit for years now, but I have yet to hear of a fast car coming out of your shop!! Again, nice bashing another sponser!!:rolleyes:
Click to expand...

If you think someone violated the posting rules please use the report post button. If you want to start arguments, try the political debate forum. Otherwise, please stay out of this thread unless you have something CONSTRUCTIVE to add.

-Geoff
 
OnyxSSS said:
where are you getting your shortblock? or what are your plans for the bottom end? any idea on $$
I was thinking about going to a stroker for my 6.oL but I am still looking at the budget and a good combo...a sponsor with a good deal:)
Click to expand...

i just sourced out my parts

found the iron block for 100 bucks

got a eagle crank and rods and diamond pistons. sitting at about 1700 total for all that.

got the stock l92 heads for 300 shipped and the valves for 150

but i mean when i sell the ls1 thats in the car it'll bring the total cost down which will be nice.



see when i read that internet article where livernois took a ls2 added a cam and l92 heads with a carb intake the engine dyno'd at over 500 hp.

i was thinking with more cubes i'd at least make close to 500whp but from what everyones saying on here it sems like that might not be a reality

reason why i asked on here instead of ls1tech where they act like 500 is easy
 
I know every L92 combo that Livernois has done has laid down over 500 RWHP, they have all been 402+ cubes, but all have done over 500
 
Syn said:
reason why i asked on here instead of ls1tech where they act like 500 is easy
Click to expand...


You can make 500 to the wheels cam only. In Houston.

Good luck on the build, sounds interesting. I'd love to do something like that for that monster torque on the road course. Keep us up to date.

Hey Geoff, are your heads stock castings or ported?
 
You must log in or register to reply here.
Back
Top