View unanswered posts | View active topics It is currently Fri Mar 22, 2019 2:41 pm



Reply to topic  [ 21 posts ]  Go to page 1, 2  Next
 EGR and Corvette heads 
Author Message
Forum User

Joined: Thu Sep 03, 2009 12:21 pm
Posts: 134
Location: London
Reply with quote
Post EGR and Corvette heads
So when I put the corvette aluminum heads '113 I never did anything about the EGR. I am wondering if I should of, and if that could possibly causing my lower than expected power. My understanding that it can mess with the knock semsor and cause the computer to pull timing?
Any insight?

_________________
Image
1988 GTA
1989 20th Anniversary TTA


Sat Feb 04, 2012 11:14 pm
Profile
CCFBG Club Member

Joined: Sat Mar 19, 2005 8:15 am
Posts: 3233
Location: Mississauga
Reply with quote
Post Re: EGR and Corvette heads
CHeck to see if the EGR is stuck first


Sat Feb 04, 2012 11:46 pm
Profile
Forum User

Joined: Thu Sep 03, 2009 12:21 pm
Posts: 134
Location: London
Reply with quote
Post Re: EGR and Corvette heads
Anyone running corvette heads?? Seems like I need some type of crossover tube? any info where I could get this?

_________________
Image
1988 GTA
1989 20th Anniversary TTA


Mon Feb 06, 2012 10:18 pm
Profile
Forum Moderator
User avatar

Joined: Thu Mar 17, 2005 10:28 pm
Posts: 5899
Location: Center of the Universe
Reply with quote
Post Re: EGR and Corvette heads
Runs an external EGR, I have to do the same on my Plow Truck because the RPM heads (like the vette heads) have no heat risers, runs off a pipe from your headers.

SDPC has the kits, they sell them for use with there TPI Vortec imtake, or used to anyways


Mon Feb 06, 2012 11:43 pm
Profile
Forum User

Joined: Thu Sep 03, 2009 12:21 pm
Posts: 134
Location: London
Reply with quote
Post Re: EGR and Corvette heads
Would you happen to know the part# or any other place that sells it. I checked out SDPC but can't find it.

Do you think it could be part of the reason why the car doesn't perform as it should? computer pulling timing?


Hawk wrote:
Runs an external EGR, I have to do the same on my Plow Truck because the RPM heads (like the vette heads) have no heat risers, runs off a pipe from your headers.

SDPC has the kits, they sell them for use with there TPI Vortec imtake, or used to anyways

_________________
Image
1988 GTA
1989 20th Anniversary TTA


Tue Feb 07, 2012 7:08 pm
Profile
CCFBG Club Member
User avatar

Joined: Fri Mar 03, 2006 8:52 pm
Posts: 1164
Location: Drayton
Reply with quote
Post Re: EGR and Corvette heads
88GTA wrote:
Do you think it could be part of the reason why the car doesn't perform as it should? computer pulling timing?


If you are talking about WOT power no. There is little to no vacuum in an engine during WOT so the valve would not operate. Most aftermarket camshafts have enough egr created through valve timing as well. Put your money towards tuning what you have.

_________________
Image


Tue Feb 07, 2012 10:44 pm
Profile
Forum User

Joined: Thu Sep 03, 2009 12:21 pm
Posts: 134
Location: London
Reply with quote
Post Re: EGR and Corvette heads
flame wrote:
88GTA wrote:
Do you think it could be part of the reason why the car doesn't perform as it should? computer pulling timing?


If you are talking about WOT power no. There is little to no vacuum in an engine during WOT so the valve would not operate. Most aftermarket camshafts have enough egr created through valve timing as well. Put your money towards tuning what you have.



You may have a point. I wonder if I can get the guy who tuned it last time to give it a go again.

_________________
Image
1988 GTA
1989 20th Anniversary TTA


Tue Feb 07, 2012 11:04 pm
Profile
Forum Moderator
User avatar

Joined: Thu Mar 17, 2005 10:28 pm
Posts: 5899
Location: Center of the Universe
Reply with quote
Post Re: EGR and Corvette heads
Quick Google found it for you 8) You ask and you shall receive :welcome

SDPC's EGR installation kit, part No. SD3816

http://www.gmhightechperformance.com/te ... to_13.html


Wed Feb 08, 2012 10:02 am
Profile
Forum User

Joined: Thu Sep 03, 2009 12:21 pm
Posts: 134
Location: London
Reply with quote
Post Re: EGR and Corvette heads
Hawk wrote:
Quick Google found it for you 8) You ask and you shall receive :welcome

SDPC's EGR installation kit, part No. SD3816

http://www.gmhightechperformance.com/te ... to_13.html


Thanks, I had done a google search, that part # is the vortec base on the SDPC. I emailed SDPC , I will let you know if I hear back.
:welcome

_________________
Image
1988 GTA
1989 20th Anniversary TTA


Wed Feb 08, 2012 7:09 pm
Profile
Forum Moderator
User avatar

Joined: Thu Mar 17, 2005 10:28 pm
Posts: 5899
Location: Center of the Universe
Reply with quote
Post Re: EGR and Corvette heads
Thats because like the RPM heads and the Vette heads, the Vortec heads have no heat risers ;)
Image

Look at the top right by the distibutor hole, thats the external EGR mount place, but you will have to custom weld the pipe to your headers since only LT1 headers already have the EGR passage, thats why I used the 96-98 Vortec headers on my 91 truck


Wed Feb 08, 2012 8:21 pm
Profile
Forum User

Joined: Thu Sep 03, 2009 12:21 pm
Posts: 134
Location: London
Reply with quote
Post Re: EGR and Corvette heads
Do you think the EGR missing causes any issue with performance?

_________________
Image
1988 GTA
1989 20th Anniversary TTA


Wed Feb 08, 2012 8:46 pm
Profile
Forum Moderator
User avatar

Joined: Thu Mar 17, 2005 10:28 pm
Posts: 5899
Location: Center of the Universe
Reply with quote
Post Re: EGR and Corvette heads
88GTA wrote:
Do you think the EGR missing causes any issue with performance?


Others would know that better then me, Dan knows alot and he doesnt seem to think so

flame wrote:
If you are talking about WOT power no. There is little to no vacuum in an engine during WOT so the valve would not operate. Most aftermarket camshafts have enough egr created through valve timing as well. Put your money towards tuning what you have.


I just run my EGR on the truck to keep it legal, and helps with my e-tests


Thu Feb 09, 2012 2:47 pm
Profile
Forum Moderator

Joined: Fri Mar 18, 2005 6:54 am
Posts: 1840
Location: ingersoll
Reply with quote
Post Re: EGR and Corvette heads
well mine didnt work last year, and i didnt notice any loss of power, but than again i swapped a t56 in as well, lol

_________________
355, trickflow heads, comp cams roller cam, compcams rollertip rockers. First fuel injection, t56, hooker headers, dynomax exhaust.


Thu Feb 09, 2012 6:28 pm
Profile
Forum User

Joined: Thu Sep 03, 2009 12:21 pm
Posts: 134
Location: London
Reply with quote
Post Re: EGR and Corvette heads
Thanks for the input guys! Might just leave it the way it is for now.

I will change out the knock sensor for a 350 unit just incase that was causing any issues. Also going to look into the ESC (electronic spark control module) apperently when you swap 305 to 350 this should be changed??

I almost have everything for my T56 swap now too! can't wait to get it all swapped in. :D

_________________
Image
1988 GTA
1989 20th Anniversary TTA


Thu Feb 09, 2012 7:59 pm
Profile
Forum Moderator

Joined: Fri Mar 18, 2005 6:54 am
Posts: 1840
Location: ingersoll
Reply with quote
Post Re: EGR and Corvette heads
yes the 305 knock sensor is different than the 350 sensor, start there, also recheck the timing. When you did the camshaft did you put a new timing chain on(did you put any advance into the cam as well). I have never heard that the spark control module is different than between the 305 and 350

_________________
355, trickflow heads, comp cams roller cam, compcams rollertip rockers. First fuel injection, t56, hooker headers, dynomax exhaust.


Fri Feb 10, 2012 6:56 am
Profile
Display posts from previous:  Sort by  
Reply to topic   [ 21 posts ]  Go to page 1, 2  Next

Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group.
Designed by STSoftware for PTF.