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Old Jan 15, 2012 | 11:31 PM
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Default 370 or 408

I have 6000 to dump into a motor, it will be going in a 99 m6 Camaro. The car already has full suspension. Will have a 9" under it also with a built tranny. Help me out guys.
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Old Jan 15, 2012 | 11:42 PM
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What do you plan on doing with the car? DD? Weekend Warrior? King of the Strip?
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Old Jan 16, 2012 | 12:03 AM
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6k can get you a badass 408 with an l92 topend...nasty
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Old Jan 16, 2012 | 12:10 AM
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Weekend warrior, I already have an lq4 also
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Old Jan 16, 2012 | 02:14 AM
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I'd stick with the 370. Can be built cheaper and with ls3 top end, 500 rwhp is very attainable.
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Old Jan 16, 2012 | 03:11 AM
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I vote for 408 then you won't be wondering latter if you did the right thing or not. I've been looking at crate Ls2 stroker short blocks that are already done and you have a warranty.
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Old Jan 16, 2012 | 04:34 AM
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408 all the way..
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Old Jan 16, 2012 | 05:07 AM
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408 and dont look back
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Old Jan 16, 2012 | 06:00 AM
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408!!!
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Old Jan 16, 2012 | 10:48 AM
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here is an example, you can get the following parts for just about 4K shipped and built:

LQ9 Iron Block bored .030 over
Wiseco 4.030 -3cc flat top pistons
Wiseco Steel top/Napier 2nd piston ring
Callies Compstar 6.125 H-Beams with ARP rod bolts
Callies Compstar 4" stroke crank
ARP Main Stud Kit
Shipping included with price

and here is the link to customize it all for just about $4,000!!

http://www.texas-speed.com/p-588-tsp...ort-block.aspx

then you have another 2k to pick up some L92 heads, L76 intake and some ARP head bolts for just about another 2k. also with this combo it uses an LS1 style block Gen III so you can use all your old sensors and covers (ie valley cover, knock sensors, oil pan, valve covers, etc)

i have been thinking 408 for a while now, and this is the way i will be going with the block, but for heads i will be going with small port LS3 heads from TSP. they have a 250cc intake port vs the stock 265cc (i believe) port on the LS3 head, but with LS3 designed intake runners, and exhaust ports. they also dominate the LS3 heads right out of the box.

here is the link for the heads i am gonna get:

http://www.texas-speed.com/p-3200-pr...der-heads.aspx

call Jason@Texas Speed and he can tell you all about them.
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Old Jan 16, 2012 | 10:55 AM
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408 if N/A.

370 if Boosted/Sprayed
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Old Jan 16, 2012 | 11:29 AM
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here are words to live by:

"There is no replacement for displacement"

enough said
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Old Jan 16, 2012 | 11:30 AM
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Originally Posted by NVUSZ28
408 if N/A.

370 if Boosted/Sprayed
why do you say this? i have seen plenty of boosted 408 motors making over 1000rwhp
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Old Jan 16, 2012 | 04:17 PM
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What kind of internal parts should I use with the 408 build? What oil pump, timing chain and whatever else I need. I was also thinking about spending the extra money on studding the whole motor.
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Old Jan 17, 2012 | 10:56 AM
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Any help?
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Old Jan 17, 2012 | 11:00 AM
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what are your plans with the car? Boost? N/a? Nitrous?
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Old Jan 17, 2012 | 11:02 AM
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Originally Posted by trans_am7935
why do you say this? i have seen plenty of boosted 408 motors making over 1000rwhp


I'm one of those that's doing it and if i could find someone to trade me their 370 motor, I'd swap right now.


For MY setup, it's wrong. The bore/stroke combo is wrong for what i'm trying to do. That being said, with a 88mm where sheer volume of air makes up for a slightly "wrong" motor package, making power was EASY. We saw 1000rwhp all day with no problems on a old school Garrett 88mm turbo. But, in a restricted power adder class, the 370 would be a better bet for me.


Want to trade me a 370?!
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Old Jan 17, 2012 | 11:03 AM
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Originally Posted by 1999Hugger
What kind of internal parts should I use with the 408 build? What oil pump, timing chain and whatever else I need. I was also thinking about spending the extra money on studding the whole motor.


Hard to say without knowing what direction you are going with the motor.
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Old Jan 17, 2012 | 12:03 PM
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There prolly won't be any power adders. It will stay NA
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Old Jan 17, 2012 | 12:11 PM
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Originally Posted by 1999Hugger
There prolly won't be any power adders. It will stay NA


Then 408
LS2 chain
Ported stock pump or melling
keep compression around 11.0:1
L92 heads ported by AI
Fast 102
CP Pistons
Your call on rods and Crank(being N/a, dont spend a fortune there)
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