Whp gain with:TPIS 90MM intake/90mm TB fully ported?? - CorvetteForum - Chevrolet Corvette Forum Discussion

Register FAQ Search Today's Posts Mark Forums Read Vendor Directory

Performance Results
Dyno sheets, Timeslips, Track Records, Who has the Fastest C5 Corvette?

View Poll Results: Whp gain with:TPIS 90MM intake/90mm tb fully ported??
Less than 15whp 8 57.14%
Between 15whp to 20whp 1 7.14%
Between 20 to 25whp 5 35.71%
Between 25 to 30whp 0 0%
More than 30whp 0 0%
Voters: 14. You may not vote on this poll

Whp gain with:TPIS 90MM intake/90mm TB fully ported??

Reply
 
 
 
Thread Tools Search this Thread
Old 11-02-2013, 11:52 AM   #1
always faster
CF Senior Member
Thread Starter
 
always faster's Avatar
 
Member Since: Dec 2006
Location: Somewhere in Québec, Canada
Posts: 821
Thanks: 0
Thanked 4 Times in 4 Posts
Default Whp gain with:TPIS 90MM intake/90mm TB fully ported??

Lets make a small poll for this one
I got a 383 and im putting down 490whp/461wtq with a stock untouched ls6 intake and stock untouched 78mm tb.So i was looking to improve my intake.

Note:
1-I did not use a Fast 90 or 92 because i had one on my first setup and the lower sheel cracked twice because of the cheap plastic.
2-I did not use a Fast 102 because after some test fit,it was rubbing/hitting my cowl.There is no way i would cut my car for a intake and will not use shorter engine mount.

So the TPIS 90mm ls6 was the way to go.A solid ls6 gm base with a 90mm opening.But they are kinda rare in the used market.Ive found one a couple weeks ago for a faire price and bought it.I will use a 90mm ls2 tb.Both will be professionaly ported and the transition between the tb and the intake opening will be seem-less.

So simple question:

After some tune adjustment ,how much whp should i gain ???
Hoping for at least 20whp

Thanks
Eric

Last edited by always faster; 11-02-2013 at 11:56 AM.
always faster is offline   Reply With Quote
Old 11-02-2013, 03:03 PM   #2
dankhts
CF Senior Member
 
dankhts's Avatar
 
Member Since: Jun 2004
Location: Stoney Creek Ontario
Posts: 3,820
Thanked 17 Times in 15 Posts
Default

I only picked up 11 rwhp on my heads/cam C5, from about 3,500rpm and up, lost a bit below that though, ported Fast 92/90 and a well respected tuner.....I was hoping for more but I got about what he told me to expect....
dankhts is offline   Reply With Quote
Old 11-02-2013, 11:18 PM   #3
JoeyG
CF Senior Member
Cruise-In III Veteran
Cruise-In IV Veteran
 
JoeyG's Avatar
 
Member Since: Aug 2000
Location: St. Joseph MO
Posts: 4,285
Thanks: 0
Thanked 42 Times in 40 Posts
Default

Id say 10hp but more importantly 25lbft with additional tuning.
JoeyG is offline   Reply With Quote
Old 11-05-2013, 09:00 AM   #4
always faster
CF Senior Member
Thread Starter
 
always faster's Avatar
 
Member Since: Dec 2006
Location: Somewhere in Québec, Canada
Posts: 821
Thanks: 0
Thanked 4 Times in 4 Posts
Default

Well kinda depressing...10whp...
I guess that the 25 torque is something good.
always faster is offline   Reply With Quote
Old 11-07-2013, 09:05 AM   #5
always faster
CF Senior Member
Thread Starter
 
always faster's Avatar
 
Member Since: Dec 2006
Location: Somewhere in Québec, Canada
Posts: 821
Thanks: 0
Thanked 4 Times in 4 Posts
Default

Would it hurt me a lot by skipping the porting job on the intake ???I mean if spending 125$ + both shipping from canada for a port job is useless i would not do it.

I could just slap the ported ls2 tb on it and thats it.Maybe tring to make a seem-less transition myself but left the intake in stock form.
always faster is offline   Reply With Quote
Old 11-08-2013, 11:22 AM   #6
PRE-Z06
Supporting Vendor
 
PRE-Z06's Avatar
 
Member Since: Dec 2006
Location: Fort Worth, Texas
Posts: 6,491
Thanked 11 Times in 10 Posts
Default

Curious what heads you're running?
FWIW here's my results from an LS6 to a 92...
http://forums.corvetteforum.com/perf...-maf-10hp.html
__________________
http://www.youtube.com/watch?v=wNb3maKeytI
http://www.youtube.com/watch?v=vg1OX90xbWY
~422rwhp+Monster Level 2/4.10=60'-1.49 1320'-10.99/125.5
Best mph-127.1


~520rwhp 6.0+LT1S/3.42=60'-1.56, 660'-105.9mph, 1320'-132.5 with headwind and 0' DA



PRE-Z06 is offline   Reply With Quote
Old 11-09-2013, 01:39 PM   #7
always faster
CF Senior Member
Thread Starter
 
always faster's Avatar
 
Member Since: Dec 2006
Location: Somewhere in Québec, Canada
Posts: 821
Thanks: 0
Thanked 4 Times in 4 Posts
Default

Im running:
PRC LS6(243) stage 2.5 : http://www.texas-speed.com/p-4-prc-s...ted-heads.aspx
383 ci built by TSP(all callies) 11:1 CR
Cam: 240/244 ,.615"/.619" @ 113 lsa (EXR lobe)
All the support mod(ARH 1 7/8 ,Vararam,morel lifter,manton custom pushrods, etc etc)
Built tr6060/c6z diff complete setup,twin disc clutch,adj master,poly tube coupler etc etc)

No cheap parts but did wanted to say simple.

Last edited by always faster; 11-09-2013 at 01:50 PM.
always faster is offline   Reply With Quote
Old 11-09-2013, 03:40 PM   #8
PRE-Z06
Supporting Vendor
 
PRE-Z06's Avatar
 
Member Since: Dec 2006
Location: Fort Worth, Texas
Posts: 6,491
Thanked 11 Times in 10 Posts
Default

Quote:
Originally Posted by always faster View Post
Im running:
PRC LS6(243) stage 2.5 : http://www.texas-speed.com/p-4-prc-s...ted-heads.aspx
383 ci built by TSP(all callies) 11:1 CR
Cam: 240/244 ,.615"/.619" @ 113 lsa (EXR lobe)
All the support mod(ARH 1 7/8 ,Vararam,morel lifter,manton custom pushrods, etc etc)
Built tr6060/c6z diff complete setup,twin disc clutch,adj master,poly tube coupler etc etc)

No cheap parts but did wanted to say simple.
Sounds like a solid build and the intake is definitely the bottle neck, so you should see some better gains. Have you ever logged your kpa?
PRE-Z06 is offline   Reply With Quote
Old 11-11-2013, 04:57 AM   #9
always faster
CF Senior Member
Thread Starter
 
always faster's Avatar
 
Member Since: Dec 2006
Location: Somewhere in Québec, Canada
Posts: 821
Thanks: 0
Thanked 4 Times in 4 Posts
Default

Quote:
Originally Posted by PRE-Z06 View Post
Sounds like a solid build and the intake is definitely the bottle neck, so you should see some better gains. Have you ever logged your kpa?
Better gains, well finally something positive to hear
I dont know the KPA reading since im do not tune the car.

If i can have someting in the 505whp/480wtq minimum range, i ll be happy
always faster is offline   Reply With Quote
Old 11-13-2013, 11:28 AM   #10
mchicia1
CF Senior Member
 
Member Since: Apr 2009
Location: Morrisville PA
Posts: 1,890
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Did you use the button head bolts on the valley when you had your first fast 90? It's a common problem for people not to install them and they end up cracking the intake.

Anyway, on a 383, you will pick up 30 from 4k and up with a fast/ls2 tb, no doubt about that. I even gained 25 on my little 346.
mchicia1 is offline   Reply With Quote
Go Back   CorvetteForum - Chevrolet Corvette Forum Discussion >
Reload this Page
  • Whp gain with:TPIS 90MM intake/90mm TB fully ported??
  •  
     
    Reply

    Related Topics
    Thread Thread Starter Forum Replies Last Post
    For those interested...here are my testing results for the Holley High Ram w/102mm TB JMB C6 Z06 Discussion 6 12-08-2014 08:58 PM
    TPIS 90mm LS6/LS2 tb fully ported intake setup always faster C5 Parts for Sale/Wanted 1 03-26-2014 04:06 AM
    Bolton LS2's with Fast 102mm Intake Manifold & Ported TB, Dyno Numbers thread !! stanklr C6 Tech/Performance 15 12-19-2013 03:08 PM
    Do You Have a 102mm FAST Intake & A 90mm TB? New Item Available Inside Mike@NorrisMotorsports C6 Tech/Performance 18 01-18-2011 07:52 AM
    Planning on doing intake manifold Rusc6z06 C6 Z06 Discussion 6 04-14-2010 11:48 PM


    Thread Tools Search this Thread
    Search this Thread:

    Click for 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 Off
    Refbacks are Off

    Forum Jump


    All times are GMT -4. The time now is 06:28 AM.