396 cid lq4/9?
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TECH Enthusiast
Joined: Sep 2010
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From: North Central Ohio
North Central Ohio huh?
just noticed that.
anyways, if your set on 396 cubes, by all means, go for it. it would be the same price roughly. with the 3.900 crank, a 6.125 rod and a custom 4.020 piston if for some reason one is not readily avaliable for a 3.900 crank you can make killer power and still have room to spray it. if you have to get a custom piston, it's usually 50 bucks over the cost of a set of 8 shelf pistons. I say go for it. a 396 LS would be really cool.
just noticed that.
anyways, if your set on 396 cubes, by all means, go for it. it would be the same price roughly. with the 3.900 crank, a 6.125 rod and a custom 4.020 piston if for some reason one is not readily avaliable for a 3.900 crank you can make killer power and still have room to spray it. if you have to get a custom piston, it's usually 50 bucks over the cost of a set of 8 shelf pistons. I say go for it. a 396 LS would be really cool.
A Fox bodied Mustang,1970's Datsun 240 Z or 510 Sedan,2 or 3rd Gen Camaro, or '70's-'80's El Camino would be awesome with LQ9 396 SS Power.
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396 BBC has a great history - SS396 Chevelles, Camaros, El Caminos etc. You do realize that starting in 1970 GM's 396's were bored a little more and actually displaced 402 cubes. Seems to me if GM can build a 402 and call it a 396 you could do the same.
Thread Starter
TECH Enthusiast
Joined: Sep 2010
Posts: 580
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From: North Central Ohio
I reckon that makes sense.
I was getting ready to say that about the original 396's.
Again, not saying one combo is better than another, but if you really want a 396 it can be done with the same ease as a 402, 408 etc...I was just trying to help you hit your goal, not direct you away from it.
Again, not saying one combo is better than another, but if you really want a 396 it can be done with the same ease as a 402, 408 etc...I was just trying to help you hit your goal, not direct you away from it.
.022 over bore? What are you talking about bro?
How is going from a 3.898 to a 3.920 bore .022? Learn what you are talking about before correcting someone!!
How is going from a 3.898 to a 3.920 bore .022? Learn what you are talking about before correcting someone!!
What's 3.920 - 3.898 = ?
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Verdad Gallardo I know what I wrote was incorrect (typo) but this sort of response is certainly on called for. My original response was not in any way shap or form aimed as an attack on you or anybody else! IT WAS A SIMPLE TYPO and mistake on my part!!
Please reframe from responding to tech members in this fashion as it solves nothing!
GROW UP!!
Please reframe from responding to tech members in this fashion as it solves nothing!
GROW UP!!
Typo's happen. No biggie.
But even on a 3.90x bore and a 4.1 stroke only gets you 392 ish cubes. Combined with the 4.1 stroke your pushing your reliability to the limits.
Most builders like to stick with 4.0 cranks or less in standard deck stock blocks as a longer stroke pulls the piston so far down in the bore, they rock and cause oil consumption issues.
Also a 4 inch or 3.9 inch crank would be safer on nitrots if he so chooses.
But even on a 3.90x bore and a 4.1 stroke only gets you 392 ish cubes. Combined with the 4.1 stroke your pushing your reliability to the limits.
Most builders like to stick with 4.0 cranks or less in standard deck stock blocks as a longer stroke pulls the piston so far down in the bore, they rock and cause oil consumption issues.
Also a 4 inch or 3.9 inch crank would be safer on nitrots if he so chooses.
Please reframe from responding to tech members in this fashion as it solves nothing!
GROW UP!!
GROW UP!!
Learn what you are talking about before correcting someone!!
Typo's happen. No biggie.
But even on a 3.90x bore and a 4.1 stroke only gets you 392 ish cubes. Combined with the 4.1 stroke your pushing your reliability to the limits.
Most builders like to stick with 4.0 cranks or less in standard deck stock blocks as a longer stroke pulls the piston so far down in the bore, they rock and cause oil consumption issues.
Also a 4 inch or 3.9 inch crank would be safer on nitrots if he so chooses.
But even on a 3.90x bore and a 4.1 stroke only gets you 392 ish cubes. Combined with the 4.1 stroke your pushing your reliability to the limits.
Most builders like to stick with 4.0 cranks or less in standard deck stock blocks as a longer stroke pulls the piston so far down in the bore, they rock and cause oil consumption issues.
Also a 4 inch or 3.9 inch crank would be safer on nitrots if he so chooses.
Not saying a stout combo can't be built with a stock deck and a 4.1 stroke, but it's not going to last near as long as an equaly built engine with a shorter stroke.
wow wow wow. I thought the max on LS1 was .010" over. I know the max on the LS2 is .010" over (im sure you can go more but i have been told that is the safe max, info per/ TSP). I have built an LS2 that is .005" over. I would think .022" over on stock LS1 sleeves would lead to some heat issues and possibly cracked sleeves
^^^^This is kinda of what I was trying to say.
You can make 398ci or 390ci out of LQ9/4
3.9" Crankshaft X 4.03" Bore = 398ci
3.8" Crankshaft X 4.03" Bore = 390ci
people are using them for heavy boost/n2o motors. Actually AES is selling alot of them
3.9" Crankshaft X 4.03" Bore = 398ci
3.8" Crankshaft X 4.03" Bore = 390ci
people are using them for heavy boost/n2o motors. Actually AES is selling alot of them
or build a 427 and call it a 346