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What are your thoughts on the Blue Thunder aluminum intake manifold.  I have a 1971 351-4V that needs rebuilding and I bought a Blue Thunder hearing it was great.  Need some input from the collective.

Thank you, Tim

 

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It depends on the rest of the build. If it is an otherwise stock 4V you might be better off with a regular performer. If you have upgraded the cam, installed headers and exhaust, rear gear etc...the blue thunder may be a good choice.

73 conv. 460, D0VE large valve heads, Performer RPM manifold, Voodoo 227/233 cam, Holley 950 HP carb, C6 trans, 3.25 trak-loc.

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I have one on my 72 Q code and love it! My engine has been rebuilt and is not stock. It works very well with my combo. I have a Crower cam and hydraulic lifters, 71 closed chamber heads with stainless steel valves, Crane Gold aluminum roller rockers, flat top 10.3:1 forged pistons, stock rods and crank and a Quick Fuel HR 735 vacuum secondary carb. I have Hooker headers with h pipe and turbo mufflers. It’s all connected to a c6 trans with a Trans Go shift kit and a Truetrac posi with 3.50 gears. It runs very good, spins the tires very easily and I am very happy with it. I actually could use some wider rear tires, I only have P235’s on it now. Here’s a couple pics of it. If there’s anything else you need to know, feel free to ask.

F5DC5D8A-807F-4014-B78F-3BB0D903DEBA.jpeg

098BBDD9-FC58-4030-96D5-2BB18A3B54F8.jpeg

John - 72 Q Code

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It is a good intake for performance application as Tommy said. I have one on my 408C. They can benefit by putting a gentle radius at the carb mounting pad to runner transition for the upper runners. Chuck

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I have one running with a FiTech EFI. Very happy with it. I added a 1/4" semi-open gasket in between the manifold and the TBI. It runs great. No idea if the 1/4" gasket does anything but at least it works as an insulator. That has me maxed out in filter height since I am running a RAM air setup. Note: I modified my air plenum to lower the air filter gasket about 1/2".

Edited by tony-muscle

20160929_171923_edit2_small.jpg

 

1971 M-Code Mach 1 w/Ram Air, 408 stroker, 285/291 0.558" roller cam, Blue Thunder intake, TKO600, Hooker headers with electric cut-offs, FiTech EFI w/ RobBMC PowerSurge pump

Strange center section with Truetrac, 3.5 gear and 31 spline axles, 4-wheel disc brakes

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