LQ9/LS1 questions-
Thread Starter
Joined: Mar 2005
Posts: 1,038
Likes: 3
From: Fort Wayne, Indiana
LQ9/LS1 questions- Well, I'm thinking about getting an LQ9 (Escalade 345 HP) complete to replace my LS1 in my RX7. Now I know my accessories, cam, springs, intake, etc. transfers over, but how about my wiring harness/sensors? Do all of them bolt on/plug in on the LQ9? I know 95% will, but the cam/crank sensors were my question, as I thought I recalled seeing something about different sensors on the truck engines.
If so, is there any major issues aside from just one different sensor/plug and some wiring extensions?
It just seems that with nitrous and all, I can likely pull more power, more safely from the LQ9, and the price is quite.. excellent.
Then I'll have a 98 LS1 longblock to put in something else. Fiero maybe. 
If so, is there any major issues aside from just one different sensor/plug and some wiring extensions?
It just seems that with nitrous and all, I can likely pull more power, more safely from the LQ9, and the price is quite.. excellent.
Then I'll have a 98 LS1 longblock to put in something else. Fiero maybe. 
there is no reason to swap.
both motors pistons and rod bolts will fail under hard nitrous use.
you are better off spending money on forged pistons and rod bolts, IMO.
the aluminum block can be a weak link in the high horsepower range, but by then, most have upgraded to good internal hard parts.
i doubt it will make anymore power than what you have, and you will be carrying an extra 100 pounds to slow you down.
good luck.
both motors pistons and rod bolts will fail under hard nitrous use.
you are better off spending money on forged pistons and rod bolts, IMO.
the aluminum block can be a weak link in the high horsepower range, but by then, most have upgraded to good internal hard parts.
i doubt it will make anymore power than what you have, and you will be carrying an extra 100 pounds to slow you down.
good luck.
Thread Starter
Joined: Mar 2005
Posts: 1,038
Likes: 3
From: Fort Wayne, Indiana
Originally Posted by TJ
there is no reason to swap.
both motors pistons and rod bolts will fail under hard nitrous use.
you are better off spending money on forged pistons and rod bolts, IMO.
the aluminum block can be a weak link in the high horsepower range, but by then, most have upgraded to good internal hard parts.
i doubt it will make anymore power than what you have, and you will be carrying an extra 100 pounds to slow you down.
good luck.
both motors pistons and rod bolts will fail under hard nitrous use.
you are better off spending money on forged pistons and rod bolts, IMO.
the aluminum block can be a weak link in the high horsepower range, but by then, most have upgraded to good internal hard parts.
i doubt it will make anymore power than what you have, and you will be carrying an extra 100 pounds to slow you down.
good luck.
Originally Posted by digitalsolo
This is all true, but if I'm doing better pistons/rods/crank in the near future anyway, the iron block allows me to bore over (my 98 LS1 can barely be honed) and can hold more overall power, not to mention more CI. I'm not too worried about weight. 2700 lbs vs. 2600 lbs still ain't heavy.
Thread Starter
Joined: Mar 2005
Posts: 1,038
Likes: 3
From: Fort Wayne, Indiana
Originally Posted by red90cobra
why not buy a bare block build it then put it in so you don't have to do it again. I believe it's a waste of money. To swap to an iron block. You won't gain much at all just weight. How much power do you plan on making with the stock lq9? The aluminum should do just as good. I've made 550 rwhp with the aluminum. the iron i had didn't do more. and ran slower because of the weight. got the iron cause someone offerd me money for the alumium motor I couldn't refuse.
Originally Posted by digitalsolo
The Stock LQ9 I wouldn't expect much, if any, more power then my LS1. The next build will probably be a large single turbo, low compression 40x engine, shooting for 9 second passes in street trim. Only problem with the setup I see, is transmissions aren't free.
good head studs, and you can get away with a lot more power in the aluminum block.
you are a good 400 pounds lighter than most f bodys, and 1000 to those in street trim.
dont sound like to bad of a swap, but i wouldnt waste time putting it in stock.
build that bad boy then throw her in.
sounds like a fun project.
9's and toy-bo!
sweet.
