LS1SS4ever

I am going to do swap for my blazer but, I am confusing which engine to choose?
The car will be daily driver, sand, mud, some street race for fun.
Which engine should I take?

ryans01z28

iTrader: (12)

depends on how much hp you want to see and how much money u want to spend its really endless

LS1SS4ever

Most who I talked with them they said I will need torque more that hp. About the budget is around $5k

ryans01z28

iTrader: (12)

5K will get you a decent ls1 setup maybe around 450ish hp with a stock bottom end and full bolt-ons. i want to do a 6.0 set up in my camaro but need arond 10k for a decent set up so if that help any. i just did a heads cam top end kit with full bolt ons and i have 150 shot of juice. havent sprayed yet and it needs to be tuned but im hoping for 500+ with the juice. HOPEFULLY

LS1SS4ever

Will the LS1 hold power like 6.0? And will LS1 carry the Blazer weight around 6000lb without any problems? Will be the LS1 torque good for Blazer compare to 6.0?

ryans01z28

iTrader: (12)

i think it should hadel it just fine but bigger cubes is more power. i just threw together a 383 stroker thats about the same HP as my ls1 for my 77 chevy truck & thats about the same weight as ur app. i would of put a ls1 in but its to much work & i have 2much in to it. $18k in toa $4k truck. money is going to be ur biggest thing u can buy a used ls1 for $1300 a put full boltons & a tune & ur going 2burn most of that $5k up. save some $ for gears (4:10s) & trans also

ryans01z28

iTrader: (12)

also are u building it or having some1 build it

V8Rumble

iTrader: (9)

There's not going to be a really big difference between the two, so it's not like you're going to make a "wrong" decision with either one. Considering the fact that it's going into a K5, I'd lean toward the 6.0. You should be able to buy one for considerably less than a comparable LS1, you shouldn't have to switch away from the truck accessories (which will leave you more money for the rest of the swap stuff needed), & mod for mod, the extra 18 cubes or so will give you just a little bit more torque.

Either way, you'll probably enjoy it when it's done...

ryans01z28

iTrader: (12)

u will add some weight to the blazer since 6.0 is cast & ls1 is aluminum (about 40 or 60lbs heaver i belive) but as far as power its not a big diff

Thealien

iTrader: (2)

What year K5? Keeping it 4WD? What transfer case do you plan on using?

LS1SS4ever

1988 TBI
Its 4WD
700r4 now and after swap will be used.
Does the iron block means it will hold load and last more than the aluminum and better in mud and some water cross?

ryans01z28

iTrader: (12)

well i dont think its going to be the decision maker its just going to be heavier on the front end.the alum is going to run cooler i would think but thats my opinion.whats your final gearing going to be?

ryans01z28

iTrader: (12)

heres a guy thats hard up for cash right now and its a hell of a deal
https://ls1tech.com/forums/parts-cla...low-miles.html

poconojoe

iTrader: (43)

If you truely want torque, do an 8.1, doing it in a K5 should give you plenty of room

LS1SS4ever

Too big for DD and wanna small block.

LS1SS4ever

friend did some mix, Lq9 block with LS1 241 heads and LS6 intake.
He said it will be great combination and great power

the_merv

iTrader: (88)

I've got maybe $5k in my complete Engine..and it's a stroker. What are you looking at for $10k?

It runs hotter and isn't as durable..it will cool down quicker, that's about the only upside.

ryans01z28

iTrader: (12)

new one are around 7k i think & u cant for get about a trans & gears. if u have an a4 might as well throw it away & buy something diff cuz if ur makeing any power @all ur going 2 tear it out.

the_merv

iTrader: (88)

Trust me I've already killed a few parts..including some in the T56..

IH8RICE

There's an interesting thread on coloradok5.com on whether to swap a 6.0L or 8.1L into a K5 and keep it California smog legal. Here is the link:

http://coloradok5.com/forums/showthread.php?t=266215

I put a link to this exact and a couple others from this site on the very last page of the thread as well so they are cross referenced.

Scott