The Pontiacolypse - Page 21 - LS1TECH - Camaro and Firebird Forum Discussion

Notices
Generation IV Internal Engine 2005-2014 LS2 | LS3 | LS7 | L92 | LS9

The Pontiacolypse

Old 12-04-2018, 02:27 PM
  #401  
TECH Fanatic
 
Join Date: Aug 2009
Location: Coast of San Mateo County Between Pacifica & HMB
Posts: 1,450
Default

Congratulations Joe!
Great timing for the Holidays.
NAVYBLUE210 is offline  
Old 12-04-2018, 02:43 PM
  #402  
TECH Senior Member
 
Join Date: Jun 2016
Location: Central Cal.
Posts: 8,662
Default

Originally Posted by NAVYBLUE210 View Post
Great timing for the Holidays.
Icing on the cake!
G Atsma is online now  
Old 12-05-2018, 12:36 AM
  #403  
TECH Apprentice
 
NSFW's Avatar
 
Join Date: Jan 2018
Posts: 335
Default

Congratulations! That's really cool.
NSFW is online now  
Old 12-26-2018, 01:09 PM
  #404  
Launching!
iTrader: (4)
 
Join Date: Oct 2008
Posts: 244
Default

Any plans of dynoing this thing with the Holley Sniper? Would be very interested to see where torque and power peak fall, as well as how high it carries past peak.
spanks13 is offline  
Old 12-26-2018, 01:29 PM
  #405  
10 Second Club
Thread Starter
iTrader: (4)
 
Darth_V8r's Avatar
 
Join Date: Jul 2014
Location: My own internal universe
Posts: 6,520
Default

I keep thinking I will, but between travel and home improvement the car has hit the back burner. I had to redo my foundation, remove some trees, redo the gas main, etc, and still have more stuff to get done.

The dyno run I did was on the sniper. Had really bad wheel slip on the dyno. Peak power was at 7000. Carried out to 7600 when let up. And it was lean the whole time. 13.5 AFR and injectors went static. I got the bigger injectors in, but I still am betting I need more fuel pump capacity. I have it but no time to get it in the car.
Darth_V8r is offline  
Old 12-26-2018, 01:49 PM
  #406  
Launching!
iTrader: (4)
 
Join Date: Oct 2008
Posts: 244
Default

Dang, that's a lot of work on the house!

I'm trying to cam my ls7 build to minimize midrange, peak ~7200 and shift 7800-8000. It needs to pull essentially from 5500 - 8000. I've gotten some decent feedback on my first SWAG at cam specs, but am a little worried it might be big.

Low pro sniper, 285cc heads, ~12:1 on 91 octane (mix of E85 for racing). Thoughts are tight lash solid, .010-.015" hot lash 258/276 on 116+2 which is ~28-30* overlap hot.

Hard to find much comparable data since most people would not want to be giving up 50+ ft lb through the midrange. I'd like to keep it limited ~475-500 rwtq if possible, but for as flat and as long as possible. 600rwtq would do nothing for me.
spanks13 is offline  
Old 12-26-2018, 11:46 PM
  #407  
TECH Fanatic
 
Join Date: Aug 2009
Location: Coast of San Mateo County Between Pacifica & HMB
Posts: 1,450
Default

Originally Posted by spanks13 View Post
Dang, that's a lot of work on the house!

I'm trying to cam my ls7 build to minimize midrange, peak ~7200 and shift 7800-8000. It needs to pull essentially from 5500 - 8000. I've gotten some decent feedback on my first SWAG at cam specs, but am a little worried it might be big.

Low pro sniper, 285cc heads, ~12:1 on 91 octane (mix of E85 for racing). Thoughts are tight lash solid, .010-.015" hot lash 258/276 on 116+2 which is ~28-30* overlap hot.

Hard to find much comparable data since most people would not want to be giving up 50+ ft lb through the midrange. I'd like to keep it limited ~475-500 rwtq if possible, but for as flat and as long as possible. 600rwtq would do nothing for me.
Dan
I think that cam is a little bigger than you need. If it were mine I would look at 254/268 115+3 and consult
with Darth and Kip @ Cam Motion. What Heads & Exhaust? For you're RX7?
Just my .02
Dan
NAVYBLUE210 is offline  
Old 12-27-2018, 02:07 AM
  #408  
Launching!
iTrader: (4)
 
Join Date: Oct 2008
Posts: 244
Default

BES CNC ls7 stock heads, 1 7/8 long tubes and dual 3Ē. Exhaust is a little compromised but there arenít many options out there. Theyíre a true merge collector at least.

It is indeed for the rx7. Long ways out from having it in the car, but close to having all the hard parts for the engine. Itís been an expensive year lol.

Iím really looking to maximize top end and bleed off some midrange, hence the long duration and wide LSA. Iím trying to err on the big side but my worry is it might actually want to keep pulling past 8k, and wouldnít have enough ***** at 5500 to pull away from gear changes. It just feels a bit like no mans land I canít find much to compare against.

I donít want to set a power goal and be disappointed, but 775 on an engine dyno would be amazing. I have a couple specific performance goals I want to hit with the car and I know confidently that would do it.
spanks13 is offline  


Thread Tools
Search this Thread
Quick Reply: The Pontiacolypse


About Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: