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L31MaxExpress's latest activity
L31MaxExpress
replied to the thread
New Y-pipe and cat for the old girl
.
The ones I have seen personally had Vortec heads, a 2" bore TBI unit and matching manifold setup for the large footprint IAC casting of...
May 1, 2024
L31MaxExpress
reacted to
someotherguy's post
in the thread
New Y-pipe and cat for the old girl
with
Like
.
Good info. Regardless that 1995 3500HD was 1 wire o2 from factory. Also the weird setup where the original pancake pellet style cat...
May 1, 2024
L31MaxExpress
replied to the thread
Thermostatic valves for the TBI Intake
.
I think he is talking about the wax pellet control for the air cleaner thermac system but terminology is key for someone to understand...
May 1, 2024
L31MaxExpress
replied to the thread
New Y-pipe and cat for the old girl
.
Yes and they also offered the 250 inline six too in both TBI and multi point injection. The 99-07 trucks still had the old Vortec 350 in...
May 1, 2024
L31MaxExpress
reacted to
BMiller85's post
in the thread
Best Plugs to Run with Shorty Headers?
with
Like
.
Wanted to update for anyone that may run into this in the future. Purchased a set of NGK plugs, ref# 3951 and it fixed my issue. I went...
May 1, 2024
L31MaxExpress
replied to the thread
Best Plugs to Run with Shorty Headers?
.
Just put TR5's which are 2238's in the 87 G20 with the L31 build as well. Did not miss a beat on my road trip.
May 1, 2024
L31MaxExpress
replied to the thread
PSA: 1988-1995 stumble after EGR valve replacement
.
There are multiple designs of EGR solenoids used. One is a simple EGR solenoid and the other is an EVRV.
May 1, 2024
L31MaxExpress
replied to the thread
New Y-pipe and cat for the old girl
.
1995 454 would have had the newer model P4 PCM regardless if it were an automatic or manual. GM needed it to run the linear EGR valve...
May 1, 2024
L31MaxExpress
replied to the thread
New Y-pipe and cat for the old girl
.
TBI was around until 1999 on these trucks too. Yours a Mexican model by chance?
May 1, 2024
L31MaxExpress
replied to the thread
L31 Extreme Budget Build
.
A guy in a NNBS did make me laugh today though. He was lagging along inconsistently 5-10 mph under the speed limit. Hit my dyno hill...
May 1, 2024
L31MaxExpress
replied to the thread
Dual Plane MPFI Manifold
.
That is the one, I found one as a bare manifold and used all the Proflow 4 parts on it. Building an air gap version will be an...
Apr 30, 2024
L31MaxExpress
reacted to
Suburbarn's post
in the thread
Dual Plane MPFI Manifold
with
Like
.
Like this here...
Apr 30, 2024
L31MaxExpress
replied to the thread
New here. Header and exahust 97 5.7 c1500
.
Do not know if they are still made, but I put Hooker long tubes on both the 99 Tahoe when it had a 305 in it and my brothers 99 Suburban.
Apr 30, 2024
L31MaxExpress
replied to the thread
L31 Extreme Budget Build
.
TH400, stock torque converter from the 305 and a 3.08 gear with a ~29" tall rear tire. Probably going to just drive it as is until the...
Apr 30, 2024
L31MaxExpress
replied to the thread
L31 Extreme Budget Build
.
I put some more miles on it today. Then topped it off. Wish I could report some stellar fuel mileage, but running with 1,000-1,500 lbs...
Apr 30, 2024
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