Need some help with my build
Thread Starter
Former Vendor
Joined: Oct 2003
Posts: 8,479
Likes: 416
From: Devil's Island CA
Need some help with my build
Hey guys, looking for some input on which route to go. My car currently has the A&A Si kit with meth and Corsa exhaust. Getting ready to get the bottom end forged along with a BTR cam. Here’s my dilemma...I’m trying to decide what would be the better option. Built bottom end, adding headers and a xpipe, low side fuel system in anticipation of going to a Ti later, or just stick with my stock manifolds, do an xpipe with the forged bottom end of course and just get the Ti instead of headers? I’ve already spoken to A&A and doing headers or the Ti upgrade will essentially cost the same but I’d make a lot more power with the Ti obviously. I’m just thinking with headers, xpipe and corsa Xtreme with a cam is going to be really loud. I don’t necessarily mind loud, but being in California I’m trying to stay under the radar as much as possible with my Yellow Stingray 
Anyway, just curious what you guys think, should I upgrade the blower now and add headers later or do headers now and blower later?
Anyway, just curious what you guys think, should I upgrade the blower now and add headers later or do headers now and blower later?
Racer
Joined: Jun 2016
Posts: 273
Likes: 11
U need headers to help the car breath better especially FI so that would be the first thing u should do. I would say do headers cam and upgrade to ti headunit and u should be good till around 750whp. I ran my car like that for couple of years with no problem. After you get tired of that power level which u probably will in few weeks then do built bottom end with lt4 injectors and pump along with dsx low side and that ti head unit will be good up until high 800s. At this point make sure u have twin or triple disc clutch. After you get tired of that then upgrade to ysi and port injection and the list goes on and on...get ready to spend some money because nothing is cheap about c7s. GL
Thread Starter
Former Vendor
Joined: Oct 2003
Posts: 8,479
Likes: 416
From: Devil's Island CA
U need headers to help the car breath better especially FI so that would be the first thing u should do. I would say do headers cam and upgrade to ti headunit and u should be good till around 750whp. I ran my car like that for couple of years with no problem. After you get tired of that power level which u probably will in few weeks then do built bottom end with lt4 injectors and pump along with dsx low side and that ti head unit will be good up until high 800s. At this point make sure u have twin or triple disc clutch. After you get tired of that then upgrade to ysi and port injection and the list goes on and on...get ready to spend some money because nothing is cheap about c7s. GL
Also, once we do the build I’m throwing in a mantic twin so I’m good there.
Racer
Joined: Jun 2016
Posts: 273
Likes: 11
Thanks! But yea I’m doing the built bottom end right away as I’m pretty sure I have a bad piston ring. So it’ll be built with cam, but for the same anoint of money I was thinking Ti over headers but I’m listening...
Also, once we do the build I’m throwing in a mantic twin so I’m good there.
Also, once we do the build I’m throwing in a mantic twin so I’m good there.
Team Owner
Joined: Jan 2007
Posts: 29,063
Likes: 1,839
From: cookeville tennessee
ttt
Man just now getting my car back from doing the same set up on her. I went LT headers, TI head unit with meth, 3 inch mid pipe, All forged bottom end, BTR stage II cam with a 38% fuel increase, MSD ported intake from mamo, with the ported 95 T.B. on it I also did a set of ported heads from Cajun edgevette in here a vendor...LT4 inj & LT4 pump also.... Robert
Thread Starter
Former Vendor
Joined: Oct 2003
Posts: 8,479
Likes: 416
From: Devil's Island CA
Man just now getting my car back from doing the same set up on her. I went LT headers, TI head unit with meth, 3 inch mid pipe, All forged bottom end, BTR stage II cam with a 38% fuel increase, MSD ported intake from mamo, with the ported 95 T.B. on it I also did a set of ported heads from Cajun edgevette in here a vendor...LT4 inj & LT4 pump also.... Robert
Last edited by Quik Z06; Jul 4, 2019 at 04:47 AM.
Instructor
Joined: Oct 2018
Posts: 158
Likes: 43
From: Petersham, MA
Some good advice in this thread! I’ll just add if you still have the stock cats, they will begin to choke you down if you decide to upgrade the head unit to a Ti, so some Kooks headers with Green Cats (or no cats) is definitely suggested before pushing your build forward.
Last edited by Joshinator99; Jul 4, 2019 at 09:34 AM.
Team Owner
Joined: Jan 2007
Posts: 29,063
Likes: 1,839
From: cookeville tennessee
Nice our setups will be similar. My shop offered me a good price on Kooks with the xpipe so I’m definitely not passing them up. I’ll send in the Si in exchange for the Ti. I’m also doing a BTR cam, but not sure what they’ll spec out for me. Car should make really good power, I’ll definitely need some tires for it, maybe some Toyo triple 8’s?
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Racer
Joined: Nov 2008
Posts: 495
Likes: 50
Just for reference I made 715 whp on stock manifolds and no headers with a TI at 13 psi, 10.5 forged pistons and a cam with no meth. The stock exhaust manifolds flow pretty good. It depends on your goal. My low side and high side fuel system were both tapped out at this point on a stock lt1 fuel system with the cam lobe. I added a single nozzle meth and 2" headers with a msd low side fuel pump voltage booster. At 15 psi was able to jump to 800 rwhp. Just wanted to give you real world results. If I were to guess the headers, extra boost and meth all contributed equally to the extra 85 hp. Probably the meth more than the rest due to the extra fuel, octane and cooling effect. I will say I love the sound of the headers though. On your setup the addition of headers would probably net you 20hp maybe 30 hp on the high side.
Last edited by Silverboost; Jul 4, 2019 at 04:52 PM.
Thread Starter
Former Vendor
Joined: Oct 2003
Posts: 8,479
Likes: 416
From: Devil's Island CA
Thanks guys! I’ve decided I’m going with Kooks LT’s and off road Xpipe. I’m going to go ahead and do the Ti as well, since why not...lol! Will have to get my fuel system figured out, will I need the LT4 Injectors? I’ll be running a cam with a fuel lobe obviously and dual nozzle meth. It was mentioned above going with a mantic twin, this is more power than I’ll ever need. This car is driven a lot, it’s not a garage queen. 800 wheel is the goal, anything over is gravy.
Btw Robert it is an M7.
Btw Robert it is an M7.
Team Owner
Joined: Jan 2007
Posts: 29,063
Likes: 1,839
From: cookeville tennessee
Thanks guys! I’ve decided I’m going with Kooks LT’s and off road Xpipe. I’m going to go ahead and do the Ti as well, since why not...lol! Will have to get my fuel system figured out, will I need the LT4 Injectors? I’ll be running a cam with a fuel lobe obviously and dual nozzle meth. It was mentioned above going with a mantic twin, this is more power than I’ll ever need. This car is driven a lot, it’s not a garage queen. 800 wheel is the goal, anything over is gravy.
Btw Robert it is an M7.
Btw Robert it is an M7.
Le Mans Master
Joined: Mar 2010
Posts: 7,050
Likes: 945
From: DFW TX
Thanks guys! I’ve decided I’m going with Kooks LT’s and off road Xpipe. I’m going to go ahead and do the Ti as well, since why not...lol! Will have to get my fuel system figured out, will I need the LT4 Injectors? I’ll be running a cam with a fuel lobe obviously and dual nozzle meth. It was mentioned above going with a mantic twin, this is more power than I’ll ever need. This car is driven a lot, it’s not a garage queen. 800 wheel is the goal, anything over is gravy.
Btw Robert it is an M7.
Btw Robert it is an M7.
If you ever plan to do the YSI that's when you're need a low side.
Le Mans Master
Joined: Mar 2010
Posts: 7,050
Likes: 945
From: DFW TX
I would just jump to the triple.
