N2O gurus. questions on stock LQ9 build.
12-08-2012, 11:26 PM
#1
N2O gurus. questions on stock LQ9 build. So I have a freshly rebuilt LQ9 shortblock that im looking to spray. This will be a budget build to keep me occupied while im saving up for a forged F/I motor.
Im curious what people have seen these shortblocks handle reliably. I know with heads, cam and intake I should be somewhere in the 450 range N/A hopefully a little more. What room does that leave me for a shot? 150, 200, 250??
Im looking at Texas Speeds PRC heads and cant decide between the stage 2.5 243s or 5.3s. Any thoughts on which would be better with stock LQ9 bottom end, custom grind cam and LS6 intake for an N2O motor?
Also one last question. What are basic improvements to make to the stock bottom end to handle a little more? I dont mean forged rotating assembally, but are ARP rod bolts a good idea with spray? I know they are a given with F/I builds. Anything else?
Im curious what people have seen these shortblocks handle reliably. I know with heads, cam and intake I should be somewhere in the 450 range N/A hopefully a little more. What room does that leave me for a shot? 150, 200, 250??
Im looking at Texas Speeds PRC heads and cant decide between the stage 2.5 243s or 5.3s. Any thoughts on which would be better with stock LQ9 bottom end, custom grind cam and LS6 intake for an N2O motor?
Also one last question. What are basic improvements to make to the stock bottom end to handle a little more? I dont mean forged rotating assembally, but are ARP rod bolts a good idea with spray? I know they are a given with F/I builds. Anything else?
Last edited by GarrettM; 12-08-2012 at 11:39 PM.
12-09-2012, 12:16 PM
#2
Im about to build an LQ9 with forged bottom end. Im looking to add spray to. Its a camaro M6. Bout the same power range as you 450-490 NA. I really cant answer your question, im just commenting so i can follow the thread. And not to thread jack, but id also like to know what is better plate v. fogger.
12-13-2012, 10:18 AM
#5
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OP
As long as you have the fueling to support the shot you can easily spray 200hp on the stock shortblock. If you wanted to walk further off the line you could probably do 250hp but tune, fueling, and plug need to spot on or it's cost you a motor. For the heads i'd say go with the 2.5 243's.
KingPin1094
Bigger shot are always going to be a little harder on the over the smaller shots. Anything under 250hp and i'd suggest our plate setup due to the fact we have proven performance up to and beyond that size shot and with anything over 250hp i'd suggest going to a direct port setup.
As long as you have the fueling to support the shot you can easily spray 200hp on the stock shortblock. If you wanted to walk further off the line you could probably do 250hp but tune, fueling, and plug need to spot on or it's cost you a motor. For the heads i'd say go with the 2.5 243's.
KingPin1094
Bigger shot are always going to be a little harder on the over the smaller shots. Anything under 250hp and i'd suggest our plate setup due to the fact we have proven performance up to and beyond that size shot and with anything over 250hp i'd suggest going to a direct port setup.
