Brennen's01SS

iTrader: (1)

Well I recently did h/c/I to my 01 m6 ss, the setup was prc ls6 2.5, eps 226/234 and fast 102. It put down 446/399 on a dynojet. Now I'm looking to step up to a larger cube motor using everything except the cam. I know the 243's won't be ideal for the 408 but this is what my budget allows. The cam will be a much larger eps cam. All done through the stock 10 bolt. Opinions welcomed
Tsp 408 or swanke 415
11 to 1
Tsp ls6 2.5 heads
Large eps cam
Fast 102/102
13/4 long tubes
3" duels with xpipe no restrictions
And all supporting mods execpt for rear end (I know it's next)
How much power is there to be gained. I know alot depends on the cam. This is not a daily driver so I want to go big( of course custom speced by Geoff ). I'd hope to clear more than 500rwhp and close to 490rwtrq. How does this setup sound. Thanks

1Bad97WS-6

iTrader: (3)

Sounds pretty nasty to me. I'm thinking it gonna be a high 9s car if the 10 bolt don't brake..

djfury05

iTrader: (30)

you must be joking

1Bad97WS-6

iTrader: (3)

What I'm I joking about. I know of a buddy with a 408ci N/A running high 9s..

djfury05

iTrader: (30)

Your right every run of the mill 408 with a 10 bolt is gonna run high 9's.. my mistake..

Cosmos

iTrader: (15)

Lol@ high 9s.

Brennen's01SS

iTrader: (1)

Well this thread went south! I could careless about times at the moment. I was just curious about the 243s on a 408. Would I see a significant gain for the money? Yes I've seached and seems to be from 430 to 530.

jims z

I used the swanke 415. The short block was my only change. My stock short block made 480/435. With the same top end and my TEA 243's I made 515/500. So not a bunch of hp but a lot of tq.

Brennen's01SS

iTrader: (1)

Thanks jimz that's just what I was wanting to see. What size cam is that. Also are you satisfied with the swanke block?

RoidedSS

I was going to say, you will see a nice bump in torque, but may not completely "satisfy" what you want for horsepower. However, if you're doing a new cam, that will completely change a lot...what cam are you thinking about running?

Brennen's01SS

iTrader: (1)

I'm gonna get a custom cam.(eps) Id like to go pretty large. I'm not familiar with durations for a 408. What would considered large. For instance
346-trex,polluter,texasgiant=large.
408-xxx=?

jims z

The cam is a comp 236/242-601/610 on a 113 lsa. Thinking about a custom cam but do not want to sacrifice tq. I think the short block was a great bang for the buck value.

DopeFedZ

iTrader: (34)

Im using TEA 243s on my 408. I just made 512hp and 480ish tq I think it was last Weds through a 4L80 and 12 bolt. Sure some better heads would only net better results.

Brennen's01SS

iTrader: (1)

Im wanting to use a spdc l92 416 with the ported 243 head. I know I'm pushing it, but I don't want to regret less cubes later on. I seached and found that it would work just could not find any #. How ridiculous is this? Also bought 1 7/8 headers. Still waiting on cam specs. What cubic inch would you go with:
Ls2 402
Lq9 408
Ls3 416
Thanks

Brennen's01SS

iTrader: (1)

The build has changed a bit.
Ls3 416
11.5.1
Tsp ls6 2.5 62cc
Eps 243 251 .627 .632 113+2
Fast 102,102
Tsp 1 7/8 LTs
3" duels
I'm hoping to break 500rwhp 480rwtrq. Heads are just temporary. AFR 245s will come next. Do you think I'll hit my goal?

djfury05

iTrader: (30)

You will hit 500 to the rear with that setup no problem.

Brennen's01SS

iTrader: (1)

Gonna go ahead and get tea trickflow 245s and sell the prc's. So much for a budget! Whats needed to use stock rockers? Shims? What size( not lenght) pushrod? Going for a goal of 550hp 500trq