LSX 427 Build - Page 4 - TBSSOWNERS.com Forums - The #1 TrailblazerSS Dedicated Owners Forum

PRAY · Apr-29-12, 05:54 PM

Quote:

Originally Posted by lt1z

Pretty much sums up my thoughts when I spec'd it according to his build and needs. If nitrous was out of the picture would have changed it slightly

I am with you on the cam specs. Just didn't know the desired end state at first. My 416 cam was a 247/255 .622/.622 112+2 I think. All the power was in by 6,000. But I am partial to smaller cams now for heavier stuff. I was only pushing a 3,400lb Z06. Just surprised me how much low end I had even with what I would consider a large cam for the cubes. This thing is going to rock.

thobart · Apr-29-12, 06:22 PM

as well. Just wanted to get some input as to what if any difference it might make. Since I have not done any research on it wanted to find out what it might do for my setup. Was not going to go out of my way to change anything as I am pretty comfortable with what I have. More worried about the things I want to do on my list of next steps. I know I need those so that is what the focus will be. It has been hard to be disciplined with this build and really have not been as disciplined as I wanted to be. Did not need to build the heads anywhere near the spec they are at. Prob could have just gone with one oil problem solution instead of 2. Could have gone with 4 bolt heads instead of 6 bolts as well as just ls7 lifters or the comps I already own. All of this has been an experience I will tell you. Really really want to just drive my truck. It is getting old making payments for the last year and not driving it. Keep wanting to do this and that and have to remind myself that I need to stay focused on my goals. I am very lucky to have a lot of really great people involved in this like Romito Racing Engines and Bolt on Speed. With people who treat your stuff like their stuff it should really turn out nice.

lt1z · Apr-29-12, 06:55 PM

Quote:

Originally Posted by thobart

as well. Just wanted to get some input as to what if any difference it might make. Since I have not done any research on it wanted to find out what it might do for my setup. Was not going to go out of my way to change anything as I am pretty comfortable with what I have. More worried about the things I want to do on my list of next steps. I know I need those so that is what the focus will be. It has been hard to be disciplined with this build and really have not been as disciplined as I wanted to be. Did not need to build the heads anywhere near the spec they are at. Prob could have just gone with one oil problem solution instead of 2. Could have gone with 4 bolt heads instead of 6 bolts as well as just ls7 lifters or the comps I already own. All of this has been an experience I will tell you. Really really want to just drive my truck. It is getting old making payments for the last year and not driving it. Keep wanting to do this and that and have to remind myself that I need to stay focused on my goals. I am very lucky to have a lot of really great people involved in this like Romito Racing Engines and Bolt on Speed. With people who treat your stuff like their stuff it should really turn out nice.

I believe you will be happy with the build for how it performs in a tbss. Won't top end hp like a vette build but tq will come in early and carry.

TmanSC07TBSS · May-03-12, 07:34 PM

That's going to be a Bad Dude!

thobart · May-03-12, 07:56 PM

Got the block cleaned up cam in and started on the timing set. Not as much as I wanted done but now that it is started should go quick.

**Rat Raceway** · May-14-12, 07:12 AM

Just wanted to give you a small heads up.

The Kooks headers only have interference on the passenger side six bolt head boss. With a small amount of milling on two of the six bolt bosses the headers don't need to be changed and the heads are unharmed. ARH have a huge problem and hit in about six places.

Just some reference for you.

fearnloather · May-27-12, 08:02 PM

any update on this? I'm doing something pretty similar so I'm super stoked that theres others gonna be runnen a 427 in the TBSS.

thobart · May-27-12, 08:13 PM

this week but we shall see.

WongBob · May-27-12, 08:22 PM

fearnloather · May-27-12, 08:24 PM

sweet, looking forward to see how it turns out for ya!

Rick'SS 08 · May-28-12, 08:03 AM

Subscribed.

lt1z · May-28-12, 08:05 AM

thobart · May-28-12, 04:19 PM

of updates but pretty much have been waiting on the motor. Right now if I get it this week it looks tight for nats. We have a lot of work to do before this thing is ready. Still have the following going on:

send out the trans for upgrade
Figure out AC bracket
Figure out headers
Get motor into the truck
Get gauges figured out
Finish getting the remiander of the motor out
Coil brackets
Accusump at some point
Brackets for accusump
Debating on throttle body
CAI fabrication

I am sure there is more I am missing. As you can see it is a lot of work remaining which makes me think unless we can pull a rabbit out the hat I may not make it to nats. Just have to see what happens.

lt1z · Jun-12-12, 10:15 AM

How's it coming?

fearnloather · Jun-12-12, 02:42 PM

good question.....

thobart · Jun-12-12, 04:47 PM

block tomorrow and the long block put together next week or so. Will not make the nats however.

lt1z · Jun-13-12, 09:05 AM

Was hoping to see it next week but glad it is getting there.

**Rat Raceway** · Jun-13-12, 09:20 AM

will fit no problem on the drivers side and two bosses from the heads hit on the pass side. Mine are in after some work... Just one primary tube needs to be moved or adjusted...

ARH are not so lucky! The need work on both sides to fit!

GET THAT THING DONE!

fearnloather · Jun-26-12, 12:58 AM

hows the build coming along?

ssprince · Jun-26-12, 09:56 AM

Big "T"...Gimme a call if you need a wrench!!