I don’t have any data other than “looking X guessing”. I would bet the stock LS7 Camaro Z/28 Tri Y headers will make more power. The GM Powertrain team did a lot of work on those Z/28
Manifolds to get over 505 HP stock.
I have made over 900 HP with the Holley exhaust manifolds on a blower motors.
Both are good. The Holley’s fit the “look” of the engine bay better.
Mark
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On season 1 episode 15 of Engine Masters they tested the Holley manifold against a mid and full length on a LS.
But for those that don’t have the capability of watching.
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I don’t have any data other than “looking X guessing”. I would bet the stock LS7 Camaro Z/28 Tri Y headers will make more power. The GM Powertrain team did a lot of work on those Z/28
Manifolds to get over 505 HP stock.
I have made over 800 HP with the Holley exhaust manifolds on a blower motors.
Both are good. The Holley’s fit the “look” of the engine bay better.
Mark
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Thanks. I use those tri-y LS and LT manifolds on all the junk I build . I find them on eBay for a couple of hundred dollars. Great value but they are a little ugly.
Don
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What I learned on the Gen 5 Camaro Z/28 program is the LS7 works better if you keep the oil cool. This Earls oil cooler maybe a tad too big put I had it on the shelf. Im also using an Innovative Eng thermostat to regulate the temp. For a cruiser I chose the 210F thermostat.
You really want to get the oil temp up to 212F to help get the water out of the oil when you are just cruising around.
It required a little rework of of the header panel support.
I am so torn with painting my Radiator and AC Condenser as I feel the paint always flakes off. Do you have any suggestions as what to use.
Quote:
Originally Posted by Stielow
What I learned on the Gen 5 Camaro Z/28 program is the LS7 works better if you keep the oil cool. This Earls oil cooler maybe a tad too big put I had it on the shelf. Im also using an Innovative Eng thermostat to regulate the temp. For a cruiser I chose the 210F thermostat.
__________________ marty-mj
Is a car ever really done???? It's like a ball of yarn unwinding, that has no end... Author DKz Garage
Marty I’ve had great luck with this - can’t recall but i think matt has used Eastwood chassis black on marks previous builds - project looks great mark
It required a little rework of of the header panel support.
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Would be great to see step by step on some of these impressive pieces. Guessing from the TIG filler rod in one picture on this one and watching other mods his preferred technique for pretty much all their work.
Brian Hobaugh SCCA National Tour June 2014
First Hemi 'Cuda Convertible Ever Built
Short clips: Goodguys Pleasanton autocross and pit videos
. I find them on eBay for a couple of hundred dollars. Great value but they are a little ugly. 
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