69 Nova Build - pumpgas twin turbo 408 LS - Page 5 - LS1TECH

Log In 


Conversions & Hybrids LSX Engines in Non-LSX Vehicles

69 Nova Build - pumpgas twin turbo 408 LS

Reply
 
Thread Tools Search this Thread
Old 03-12-2011, 02:50 PM   #81
TECH Addict
iTrader: (12)
 
Join Date: Nov 2002
Location: Minneapolis,MN
Posts: 2,218
Default

Thats going to turn out really nice with that frame and manifolds.
LS1NOVA is offline   Reply With Quote
Old 03-12-2011, 06:03 PM   #82
TECH Veteran
 
Join Date: Jul 2009
Posts: 4,357
Default

Glad to see him "back at it"
Jimbo1367 is offline   Reply With Quote
Old 03-14-2011, 11:52 AM   #83
9 Second Club
Thread Starter
iTrader: (12)
 
Chevy406's Avatar
 
Join Date: Feb 2007
Location: Huntsville, AL
Posts: 753
Default

spent a little time last night working on turbo placement and mocking up the hot side plumbing. I like the tight routing of the down pipe between the engine mount and oil pan, but that will require some creativity on a turbo drain connection to the oil pan, and it will eliminate doing a low alternator mount. But it sure leaves good access to work on the engine. Think the dryer duct will hold up to the exhaust temperature/pressure?

I'm also going to try moving the turbos back, even with the front of the engine & turned facing forward. There are a lot of cause/effects/interferences to consider when laying this stuff out...

Chevy406 is offline   Reply With Quote
Old 03-14-2011, 07:53 PM   #84
TECH Fanatic
iTrader: (14)
 
Irish350's Avatar
 
Join Date: Mar 2007
Location: Phoenix/Tempe, AZ
Posts: 1,977
Default

Quote:
Originally Posted by Chevy406 View Post
Think the dryer duct will hold up to the exhaust temperature/pressure?
i cant see why it wouldnt work

lookin good
Irish350 is offline   Reply With Quote
Old 03-14-2011, 08:56 PM   #85
Teching In
iTrader: (2)
 
Join Date: Aug 2008
Location: phoenix
Posts: 13
Default

looking good on clearance with the new sub-frame I wish I had that much space with the stock sub-frame.
72ls1nova is offline   Reply With Quote
Old 04-22-2011, 11:52 PM   #86
TECH Enthusiast
iTrader: (30)
 
slownova73's Avatar
 
Join Date: Jun 2008
Location: Asheboro NC
Posts: 582
Default

i wish i could find an amzing deal on one of those frames lol looking great man!
slownova73 is offline   Reply With Quote
Old 04-23-2011, 01:27 AM   #87
11 Second Club
iTrader: (86)
 
the_merv's Avatar
 
Join Date: Mar 2006
Location: Arkansucks
Posts: 19,063
Default

Bad ***..

Quote:
Originally Posted by Chevy406 View Post
Think the dryer duct will hold up to the exhaust temperature/pressure?
I dont think so man..I have it barely holding for Intake ducting..look into the 4" Diesel flex pipe.
the_merv is offline   Reply With Quote
Old 04-23-2011, 02:03 AM   #88
8 Second Truck Club
iTrader: (32)
 
Blown06's Avatar
 
Join Date: Apr 2006
Posts: 4,969
Default

Classy build.
Blown06 is offline   Reply With Quote
Old 07-22-2011, 07:02 AM   #89
9 Second Club
Thread Starter
iTrader: (12)
 
Chevy406's Avatar
 
Join Date: Feb 2007
Location: Huntsville, AL
Posts: 753
Default

The 408 lives

Amazing that the last post I made in this thread was from March...

After spending all my car funds on the new front subframe, the project pace really slowed down. I had to save up again to buy a manual steering rack, new 4" diameter driveshaft, and the misc things that always pop up. I found myself mired down in this large conversion/build project, so I set a short term goal of getting the car running naturally aspirated for this summer, and then start the turbo install this fall. I specifically wanted to have it running by July 23 so I could drive it to my daughter's Cheerleading car show. Of course putting together an advertisers program for the show took a bunch of my time over the past week, but last night I finally hit the key - and it started right up. I haven't driven it yet and it still has open exhaust manifolds, the hood isn't on yet, the front end isn't aligned... but I just may wash it off and drive it 5 miles to the school tomorrow. Idle tuning with the Accufab throttle body may be a little challenging. But I'll figure it out. For now - it runs, has good oil pressure, & I haven't found any leaks yet.
It felt good to reach a goal with it. I took a 3 mile run afterwards, and I don't even like to run.

So, no video or new pictures just yet. But I'll work on that this weekend.
Chevy406 is offline   Reply With Quote
Old 07-22-2011, 09:21 AM   #90
TECH Veteran
 
Join Date: Jul 2009
Posts: 4,357
Default

Thanks for the update. I've been checking for updates periodically. I think refocusing your immediate plans on NA for the summer is a good idea. Both financially and the project workload. Walk before you learn to run. LOL.
Jimbo1367 is offline   Reply With Quote
Old 07-22-2011, 09:32 AM   #91
TECH Addict
iTrader: (3)
 
tsnow678's Avatar
 
Join Date: Jul 2010
Location: Germanton, N.C.
Posts: 2,461
Default

Thats great news! I didnt go out for a jog when mine fired up but I did feel like it. Congratulations!!!
tsnow678 is offline   Reply With Quote
Old 07-22-2011, 05:18 PM   #92
TECH Fanatic
iTrader: (1)
 
-TheBandit-'s Avatar
 
Join Date: Apr 2010
Location: Camarillo CA
Posts: 1,981
Default

That's great news! Hope to see more progress and pictures soon.
-TheBandit- is offline   Reply With Quote
Old 07-24-2011, 08:51 PM   #93
9 Second Club
Thread Starter
iTrader: (12)
 
Chevy406's Avatar
 
Join Date: Feb 2007
Location: Huntsville, AL
Posts: 753
Default

Well, I ended up not driving it to the show. My start-up tune had it way lean and it wouldn't keep running in gear. Today after some adjustments on the VE table, I have it running well enough for a drive around the block. I still don't have the exhaust connected so I can't connect my wideband O2 sensor. I'll have to take it by an exhaust shop this week to get some pipe work.
I'm really liking the throttle response from the Accufab 4150 throttle body. Can't wait to give it some gas in gear after I get it tuned better.

Here are a couple recent pictures with it outside for the first time in months...


Chevy406 is offline   Reply With Quote
Old 07-24-2011, 09:26 PM   #94
12 Second Club
iTrader: (12)
 
hookemdevils22's Avatar
 
Join Date: Jul 2008
Location: Tempe, AZ
Posts: 1,109
Default

nice! that thing's gorgeous! and i really like that shade of yellow.
hookemdevils22 is offline   Reply With Quote
Old 07-24-2011, 10:00 PM   #95
Teching In
 
SB2NOVA's Avatar
 
Join Date: Mar 2010
Posts: 37
Default

Very nice build! Making at go at a turbo LS myself for my Nova and I'm very thankful for threads like this one to give me inspiration as well as insight. I plan on taking my Racecar off the track ditching the SB2 headed gen 1 and heading back to the streets where its cheaper and much more fun! Thanks again for the updates.
SB2NOVA is offline   Reply With Quote
Old 07-25-2011, 07:37 AM   #96
TECH Fanatic
iTrader: (23)
 
Steve68's Avatar
 
Join Date: Jul 2005
Location: Orl Fl
Posts: 1,359
Default

Congrats, I like the look of the gray intake,

What shocks are you using on the sub? I need to buy some for mine, not sure what to get!
Steve68 is offline   Reply With Quote
Old 07-25-2011, 08:06 AM   #97
TECH Enthusiast
iTrader: (10)
 
Join Date: Jun 2010
Location: Boston
Posts: 727
Default

Nice build man! I was reading it last week and never finished, glad i didn't since i would have never seen the post that you got it running. I had more or less the same goal of getting it running for this past weekend. I wanted to make it to the only local[within 1 mile] car show. Lets just say it still doesn't run yet.

I feel much better about my intake setup since you comments that the throttle response is good. Mine should be a little more doggy down low with a super vic and 4500tb, but the car is much lighter.

Good luck with the rest of it!
Marcello7x is offline   Reply With Quote
Old 07-25-2011, 12:03 PM   #98
9 Second Club
Thread Starter
iTrader: (12)
 
Chevy406's Avatar
 
Join Date: Feb 2007
Location: Huntsville, AL
Posts: 753
Default

Quote:
Originally Posted by Steve68 View Post
What shocks are you using on the sub? I need to buy some for mine, not sure what to get!
My Martz frame came with QA1 single adjustable coilovers. The springs are 450 lb/in (I think). I haven't driven it enough to comment on the ride quality. All I have done so far is to crank the height adjustment up about 4-5 turns. One thing I noticed from my short trip down the street yesterday is that the 12" Wildwood front discs lock up pretty easily now. I'll have to make some adjustments to my proportional valve. Seems they have more bite than the OEM disc brakes had.

SB2Nova - it's funny how our vision and goals change over the years. A few years ago I was hot & heavy to pick up a pair of SB2 heads and build the ultimate SBC for street/strip. But the kind of performance people are getting out of turbos, and the relatively economical route of fuel injection with the LSx platform was just too much for me. I hope this build gives me a very streetable yet wicked hp track car, all in one package.
Chevy406 is offline   Reply With Quote
Old 07-25-2011, 09:39 PM   #99
TECH Addict
iTrader: (3)
 
tsnow678's Avatar
 
Join Date: Jul 2010
Location: Germanton, N.C.
Posts: 2,461
Default

The Nova looks great! You have done one hell of a job!!!

I see I am not the only one using a CPP master no power assist. Since I have not been able to drive mine yet, do you like the master? I see you said it was easy to lock up the brakes so I am assuming it works fine. I just wonder how it will work out with factory 4 wheel disc brakes?
tsnow678 is offline   Reply With Quote
Old 07-26-2011, 12:15 PM   #100
9 Second Club
Thread Starter
iTrader: (12)
 
Chevy406's Avatar
 
Join Date: Feb 2007
Location: Huntsville, AL
Posts: 753
Default

The CPP MCPV1 master cylinder is a really nice piece. The self contained proportional valve and stop light switch make it a compact installation, and the bright polish adds some bling. It worked just fine "out of the box" with my OEM front discs and rear drum brakes without a power booster. Now with the larger Wilwood front discs I'll have to adjust a little more bias to the rear brakes. I think you will be fine with all 4 wheel discs. Pedal effort is higher than cars with a power booster, but I prefer the room under the hood. I think you will be happy with your setup too.
Chevy406 is offline   Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
LS1 block thread repair - with Time Sert kit Chevy406 Generation III Internal Engine 26 03-21-2015 10:57 AM
FS: LS6 intake with Direct Port Nitrous plus Edelbrock progressive controller Chevy406 Parts Classifieds 2 12-10-2014 11:04 AM
FS: Turbo manifolds - truck, v-band, smoothed, coated Chevy406 Parts Classifieds 6 10-15-2012 10:04 AM
Measuring chamber volume at home Chevy406 Tools & Fabrication 3 01-10-2010 05:06 PM
69 Nova LQ4 turbo questions Chevy406 Conversions & Hybrids 16 08-21-2009 08:10 AM


Tags
1969, 317, 408, 69, builds, engine, heads, ls, nova, ported, put, size, trashed, turbo, twin

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off



All times are GMT -5. The time now is 11:05 PM.