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408 LQ9 build question

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Old Dec 10, 2012 | 10:37 PM
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Default 408 LQ9 build question

OK to make this simple I am taking this in on trade.
2005 LQ9 callies compstar crank and rods and a Bullet race cam 243/255 625/600
the block is untouched at this point.
My question is this whats it all worth??
If I were going to build this motor what cubic would be a good build with this cam 408 421 ????
I'll admit it I'm an idiot and I'm asking for some of the guru's help
thanks in advance for your help and thanks in advance for the flame too
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Old Dec 10, 2012 | 10:39 PM
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what are you using this motor for? any power adders??
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Old Dec 10, 2012 | 10:41 PM
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nitrous or n/a
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Old Dec 10, 2012 | 10:52 PM
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track car or DD with some track time??
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Old Dec 10, 2012 | 10:55 PM
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street strip more strip though
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Old Dec 10, 2012 | 11:12 PM
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my personal pick would be a 427.

has a 4in stroke which is what you want for any power added and to put miles on the motor , it will make more power then a big cam 408 bc of added CIs and be alot more streetable plus you have room to grow if you wish, whoever builds the motor tell them how much spray you want to use and they will build it to suit that with ring gaps and so forth, i have a 408 and if i had to do it again i would do 427 and if i need a new motor it will be a 427, there are ls1s and stock 6.0s reaching 408 power nowadays

this is just my take on it, others will differ
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Old Dec 10, 2012 | 11:16 PM
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well my current set upis dissapointing since my stock bottem end LS1 made 450 rwhp.
my 383 made just over that!!! I spent alot of money and did not get the bang for the buck
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Old Dec 10, 2012 | 11:20 PM
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Originally Posted by 2004yjgto
well my current set upis dissapointing since my stock bottem end LS1 made 450 rwhp.
my 383 made just over that!!! I spent alot of money and did not get the bang for the buck
then dont get a 408 lol there has been some people that where disppointed with there 408s, others havent

there are people making 500rwhp/500rwhp with a 427 shortblock, small cam. ls1 heads and intake with a auto, so you see how much room you have there
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Old Dec 10, 2012 | 11:28 PM
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well with the crank and rods being for a 408 build that would mean I have to buy a different rotating assy or can I go bigger pistons to get 427???
sorry I know I am askig stupid ??'s but I want to gain knowledge here
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Old Dec 10, 2012 | 11:35 PM
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Originally Posted by 2004yjgto
well with the crank and rods being for a 408 build that would mean I have to buy a different rotating assy or can I go bigger pistons to get 427???
sorry I know I am askig stupid ??'s but I want to gain knowledge here
oh ok, i see so you want to use the parts you get in on the trade?

have you had these parts checked to make sure there good??
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Old Dec 10, 2012 | 11:41 PM
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all new parts
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Old Dec 10, 2012 | 11:44 PM
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well if its a good trade and no money out the pocket and all parts are new then maybe its better that you build a 408 shortblock just based on all the money you are saving

the cam is questionable tho, i would get a cam speced more for your needs and the heads you are going to use
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Old Dec 12, 2012 | 04:25 PM
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if its going in a GTO, make sure the crank is a 24x reluctor wheel

other than that...if it's a 408 rotating assy then you would be at 4.030 bored iron block, with the 4" crank.
If the block is not machined yet....it's not worth much. Might need a lot of $$ to get it assembled. Bore/hone, align hone, deck, cam bearings, etc

Figure the rotating assy if Callies is worth $2500 new without knowing what pistons you have.
A stock iron LQ9 block is worth $200-300 tops
Bullet grind probably $400 to 450 new

I Think that cam will work nicely in a rowdy 408
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Old Dec 12, 2012 | 04:34 PM
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if you go over a 4 inch stroke you could be setting yourself up for failure. Get an iron block, have it sonic checked and bore it out as mucha s you can accordingly. Then buy the rotating assembly.
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Old Dec 12, 2012 | 11:54 PM
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Well I have a block a callies compstar 408 stroker crank and rods no pistons they were used elsewhere and the bullet cam. At this point I haven't seen any of it yet. Lets say its all used in great shape could I get 1200 out of all of it???
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Old Dec 12, 2012 | 11:57 PM
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so you have a used block, crack, rods, cam (and nothing has been checked) and you want to know if you could get $1200 for everything?
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Old Dec 13, 2012 | 12:38 AM
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he tells me all is new but the block. the guys never lied before (to me)
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Old Dec 13, 2012 | 12:41 AM
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Originally Posted by 2004yjgto
he tells me all is new but the block. the guys never lied before (to me)
well if everything is new and can be proved i dont see why you cant get $1200

new lq blocks sell from $500-700 alone last time i checked

cams go for $200-250

so even take the low end on the block and cam thats $700 right there without the rods and crank
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