joseph 2000 ws6

iTrader: (1)

Well i was going to build my ls1 and stroke it out to a 383 but i found a lq4 block for only $300. What do you all think would be the better build keep my ls1 and continue with the 383 or go with the lq4 and make it a 408?

bww3588

iTrader: (49)

Depends...can you live with the added 100+ lbs up front? The power potential of the 6.0 is far superior to the ls1.

What are your power goals? Will the 383 satisfy those goals and save you 300 bucks in the process?

Things to think about but my vote is with the 6.0

joseph 2000 ws6

iTrader: (1)

i was trying to get as close to five as i can on a n/a build

joseph 2000 ws6

iTrader: (1)

and another question what all will i have to change to make the lq4 fit into my trans am or will it just go right in?

bww3588

iTrader: (49)

Drill or omit one hole for the alternator. Insert engine.

joseph 2000 ws6

iTrader: (1)

oh that is not to bad. do you think it will work well with some p&p 243 heads or should i go with some diff heads? and intake?

Redbull87

iTrader: (3)

243's are nice with an ls6 or fast intake...or go with an ls3 topend and pick up good power that way too.depends on your budget.

joseph 2000 ws6

iTrader: (1)

well i already have a set of 243s that have been milled to 62cc and was planing on getting them p&p. So if i could keep them and still make some pretty good power i would be happy lol. What do you think the power potential would be with the 243 less than with a ls3 set up?

LT1TransAm

iTrader: (11)

also will need an oil pan off an ls1 to clear steering rack

joseph 2000 ws6

iTrader: (1)

yeah im going to try and use as much of my ls1 as can if i decide to do this and than just sell my ls1

LT1TransAm

iTrader: (11)

Yeah Im planning this same build this summer so I'm trying to start gathering **** as well lol

joseph 2000 ws6

iTrader: (1)

hahaha yeah im trying to get all the stuff i need before i get back from this deployment but it just seems like i keep changing my mind lol

pferris

iTrader: (2)

if i was you i would stick with the ls1 just because of the weight, but you will be able to get more power out of the lq4.

garygnu

go with the lq4 block ,you can a Texas Speed stroker rotating kit .with the bigger you can get a new set of ls3 heads for $650 and sell your 243s for $400.

SVTconfused

the lq4/lq9 is 90-96 lbs heavier... now it all depends on your internals...

If you move the battery to the trunk, and go tubular k-member and control arms then you got rid of that extra weight and got 30lbs to the back for more hook...


personaly... i think you can make 500 n/a on a ls1... just look around at what some boys are making...

pferris

iTrader: (2)

in my opinion 500 hp is more than enough for most, and these f-bodys are heavy enough. if you plan on auto cross or anything other than drag racing i would say ls1, if you car is going to be a drag car lq4 all the way.

Redbull87

iTrader: (3)

It will be easier to make power with bigger cubes..especially the tq in the midrange will really carry through the band.Even without using an ls3 topend.Reuse all your ls1 parts from the front accessories,oil pan..pickup tube..tray,use the ls1 steamlines from the 241 heads.get an ls6 intake,pnp the 243 heads..cheap extra hp there,do small upgrades to the bottom end..arp bolts..bump the compression a lil more.With a good spec'd cam and exhaust..you will sneeze over 460whp/tq.

The extra weight you pickup on the front was barely noticeable and there are many ways to easily take weight off elsewhere.I wouldnt be too concerned about it for a mostly street car.

Building a n/a ls1 to near 500whp without spray gets sketchy.many get them there..and few of the masters here build them to last on the abuse it will see.But read whats involved in those builds..not the most budget friendly ls1's

Redbull87

iTrader: (3)

Here are great examples of 6L's from mild to wild:
https://ls1tech.com/forums/dynamomet...s-part-ii.html

pferris

iTrader: (2)

if you want max power go lq4. if you want a lighter car go ls1.

joseph 2000 ws6

iTrader: (1)

Thanks for that. That was some great info i think im going to buy the lq4 now and swap them out thanks guys