Just wondering if the banshee bumper ( or any firebird bumper ) is too restrictive to put TTs with a FMIC airflow wise to cool it off via FMIC. In short, should I go ahead with my plans for a 355 TT in my formula or wait till I find a decent camaro ( which I am not a fan of ) for it, since the front bumper seems to promote better air flow through a FMIC ?

Thanks

 

i have a turbo sbc trans am with a fmic and plan to either add duct work or cut some holes in the front bumper. If you do a search there is a pic of a twin turbo bbc firebird with a cut out in the front bumper for the fmic.

 

As long as the air dam is in place, firebirds get plenty of airflow.

 

The air dam ? You mean the black piece of plastic under the rad ?

 

Yes

 

Most excellent, I won't have to wait till I find another strong body to go 355 TT.

Thank you.

 

Yep, these cars are typical bottom breathers so mount the intercooler above the air dam. It should get air flow through there. If you have good strong radiator fans that can pull air through, that will help draw up air under the nose and around the intercooler.

 

Excellent, so I would put the intercooler between the engine and the fans ? ( radiator, fan, intercooler ) It's been a while since I looked at the engine compartment so I can't quite remember where everything is at. I'll have my formula in about 2 weeks but I'm already developping the build plan. Get the 305 tpi running, locate a 350 sbc, eagle forged internals ( 8.5:1 expected CR w/ their Mahle pistons - in the build a setup area on their website ), afr 195 the big package, ?? intake / ?? electronics, turbos like yours ( kinda copying your setup, inspired me to go twin sbc, huge fan of your build, kinda honored you'd answer my thread haha ) ?? intercooler, custom piping, 2 fuel pumps ??, TH400 probably, etc.

I should focus on getting it to run first, but I want to plan ahead so I can make a budget ( and spend about 5 times as much haha ) and also a work sheet.

 

I'd put the intercooler out front of the rad. There's lots of space there. There will be some air flowing in that region, but not quite the same as say a 40mph drive wind going thru the grille of a camaro but still some air in there.

Could rig up a small electric fan behind the intercooler to also draw in some air. Depend on all your goals with the car. Higher boost/higher hp will need better intercooling.

 

An electric fan would def be in the plans as I'm aiming for 600+ on 91 octane and it will have to be comfortable doing it all day long. Idk about boost goals though, I'd assume around 1 bar maybe, idk. I'll have to check my build list to provide more info about it but now that I know the banshee bumper won't ruin it I can go ahead with the project.

Big thanks

 

You'll have that pretty easily with a good cammed heads 355 on 1 bar boost. Shoot for 6000 rpm peak hp or slightly more and with 14-15psi it should run pretty hard

 

What should I be looking for in a good cam for my setup ? I realise this thread was about firebirds airflow haha but I might as well ask.

 

Good manifold design for your turbos, I'd run a single pattern cam. Seen alot of reverse split stuff too. Probably something around a 226/226 to a 230/230 on a 112-113 lsa would do well. I'm only running a 233/233 on my 400" motor and it probably peaks in the 5500-5600 rpm range, but may be because of a restriction somewhere in my setup. It should go to 5800 peak.

Couple of T57's or so or T3/t4 60-1's would rock. Master power has a few of these, similar to my MP T60's but a touch smaller would work well on a 355 and give you enough turbo to support 800hp easily.

 

Banshees get plenty of airflow. My FMIC cools the charge to 15-25 over ambient after the hot eaton gets done with it. Either mount it in place of the AC condensor, just in front, or lay it down horozontal over the opening. Your IC will get great airflow any way you cut it. A single fan is sufficient as long as your cooling system is 100%

https://www.thirdgen.org/forums/ltx-...ot-left-4.html

 

Well the A/C is def not staying so that's gonna be a good area to put it. I appreciate your help guys

I'm glad the banshee bumper isn't gonna be an issue. That leaves my budget and desires the only thing in my way haha.