knowledge needed
Safety Car
Joined: Sep 2004
Posts: 3,953
Likes: 550
From: Mission Viejo CA
If you're looking to upgrade, but still want iron (economical) heads, here's some info. Any heads you choose will need to have the exhaust port crossover passages for your EGR to work. Most aluminum heads don't have that crossover port. As you probably know, the stock heads on our '84's are the "624" casting number.
Le Mans Master
Joined: Sep 2013
Posts: 6,192
Likes: 750
From: near the thumb in the mitten
Of the commonly available stock heads, GMPP Vortec with standard intake bolt location is among the best choices. It's the most up-to-date techology wise. Aftermarket is more about budget. The stock crossfire intake base will need reworked to take advantage of better flowing heads. Renegade intake is another option.
Thread Starter
Advanced
Joined: Jan 2019
Posts: 76
Likes: 4
From: Asheville, NC
I want to keep this car in this engine (for now). I plan to open the intake...change the heads....add a cam ( I dont know what cam yet....open for ideas). I just want to open the motor up so it can move the air it's capable of which will maximize it's potential.
I already added headers.....opened the exhaust with straight pipe out the back'
working on forced air into the intake by opening it up at the hood.
upgraded the ignition
replaced dana 38 with dana 44
need to replace plugs and wires....any suggestions?
the car already runs great
I already added headers.....opened the exhaust with straight pipe out the back'
working on forced air into the intake by opening it up at the hood.
upgraded the ignition
replaced dana 38 with dana 44
need to replace plugs and wires....any suggestions?
the car already runs great
Last edited by 84lover; Aug 15, 2019 at 11:15 PM.
Safety Car
Joined: Sep 2004
Posts: 3,953
Likes: 550
From: Mission Viejo CA
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Drifting
Joined: Jun 2018
Posts: 1,402
Likes: 287
From: Brisbane Australia
C4 of Year Finalist (performance mods) 2019
If you don’t have to pass emissions testing then you can choose after market alloy heads.
you can check out what I did with my L83 here
https://www.corvetteforum.com/forums...e-journey.html
I thing the cold air induction mod you are talking about is cutting an oval in the plastic panel forward of the radiator support. This allows cold air to flow through the 84 bonnet ducts and into the air cleaner intake. I have this mod and it works very well. It was already done when I bought the car and I thought it was factory until I looked more closely.
you can check out what I did with my L83 here
https://www.corvetteforum.com/forums...e-journey.html
I thing the cold air induction mod you are talking about is cutting an oval in the plastic panel forward of the radiator support. This allows cold air to flow through the 84 bonnet ducts and into the air cleaner intake. I have this mod and it works very well. It was already done when I bought the car and I thought it was factory until I looked more closely.
Thread Starter
Advanced
Joined: Jan 2019
Posts: 76
Likes: 4
From: Asheville, NC
i am considering venting the front plate and tunneling air from there but am concerned i am amplifying the water issue
I read somewhere there was a freezing issue at the TB also
I read somewhere there was a freezing issue at the TB also
Last edited by 84lover; Aug 16, 2019 at 01:43 PM.
Drifting
Joined: Jun 2018
Posts: 1,402
Likes: 287
From: Brisbane Australia
C4 of Year Finalist (performance mods) 2019
I don’t think there will be an issue with ingesting water. My car has been driven in the rain plenty of times. And what about all those forced air induction muscle cars of the past with ram jets and cobra jets etc. Having said that I have found leaves, polystyrene and other crap in my air box. I might look at putting a bit of mesh over the hole.
Last edited by GregMartin; Aug 17, 2019 at 02:29 AM.