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3.4 grape of wrath
07-31-2019, 05:15 AM
I wanted to upgrade from my 65mm throttle body to my 75mm, LS1 throttle body on my intake manifold but realized, I had a bottle neck in the intake. The intake has a goose neck after the throttle body and has a circumference of only 68mm. So I decided to remove both issues and install a 3 1/2'' pipe to free things up. Here are some pics of the stock manifold before surgery.

3.4 grape of wrath
07-31-2019, 05:17 AM
Some pics after surgery.

3.4 grape of wrath
07-31-2019, 05:19 AM
Removed parts from intake.

3.4 grape of wrath
07-31-2019, 05:32 AM
Test fit for the 3 1/2'' pipe.

3.4 grape of wrath
07-31-2019, 05:37 AM
Comparison pics of the 65mm and 75mm throttle bodies and the adapter plate for the 75mm throttle body.

3.4 grape of wrath
08-01-2019, 04:43 AM
Finished welding adapter plate to pipe and pipe to plenum. Ready to install.

3.4 grape of wrath
08-06-2019, 05:03 AM
Intake is installed and car is running. I had some idling issues at first but a little tuning and all is good. I have some more tuning to do now before going wot.

WildBillyT
08-06-2019, 09:19 AM
Wow, looks awesome!

sweetbmxrider
08-06-2019, 12:55 PM
Agreed, came out good

IROCZman15
08-06-2019, 05:58 PM
whew, nice job. looks very nice

3.4 grape of wrath
08-06-2019, 07:19 PM
Thanks for the compliments. I can't take credit for the welding though, a good friend of mine, who is a welder by trade, helped me out.

ar0ck
08-15-2019, 10:00 AM
That is the boldest and most beautiful thing i've seen done here! Awesome.

3.4 grape of wrath
08-16-2019, 04:24 AM
That is the boldest and most beautiful thing i've seen done here! Awesome.

Thanks, I'm still tuning the car but been busy lately with other things.