rattlesnake_dm

I currently have a 327 Miniram in my 92 RS. It winds up real nice and is a blast to drive but I'm thinkin about going to a larger engine. I have a 350(5.7 L ZZ4) in peices waiting to be put together. What size engine do the Miniram people recommend...350, 377, 383, 396, 400, 406, 427..... larger !!!!

TTOP350

iTrader: (8)

the bigger the better im well well well over 400

formula350sd

iTrader: (2)

Yeah the miniram is suppossed to support huge displacement and horsepower i say go as big as you want and see what happens

anesthes

iTrader: (12)

On a 1206 port, perhaps. Still has some pretty major un-even cylinder issues.

Not noticeable i'm sure in most 12 and 11 second cars, but I think if your boosting, pushing 600+ hp you'll notice some plugs running leaner than others.

With a 1206 port the miniram supports upwards of 300cfm right?

-- Joe

rattlesnake_dm

I'm leaning towards a Bill Mitchell Hardcore Racing 454 SBC.

87TPI350KID

A 406 would be kickass

89gta383

iTrader: (5)

I doubt the miniram would support the 454 or 427 sbc's without extensive porting and welding. You would be better off with a single plan conversion.

rattlesnake_dm

I don't know if this means anything, but I talked with TPIS and they said that the Miniram should have no problem feeding a 454 sbc. I'll just port the intake runners to match the AFR 227 heads.

brutalform

The problem with a large engine is, getting it properly fed with air. M/Rs, and S/Rs have alot of turns, and corners the air must travel to get to the ports. The M/R would work, but IMO a single plane conversion is the way to go. Spend your money right the first time. A M/R is too expensive to, have it be less than optimal.

89gta383

iTrader: (5)

Tpis will tell you anything. Tpis will also tell you that a miniram will bolt on with everything they sell you in the kit. Don't believe it. I wouldn't buy another miniram.

Get a single plane conversion if you want to make some power. There are guys on corvetteforum who had to have their minirams cut open and shaped inside to be able to flow over 320 cfm.

89gta383

iTrader: (5)

Also, do a search on camaroz28.com in the advanced tech section about porting LT1 intakes. The flow/hp limit on these types of intakes is around 550 hp. People have switched to single planes to get more power and rpm.

kaptinkafeen

iTrader: (2)

In your opion, what are good choices of a single plane FI's? I've looked through a bunch of vendors selections, and besides CFM ratings, the actual arrangement of similar parts, and the price, I am stuck as to which way to go. I've been told to stay away from the Edelbrock setup, (like the Performer RPM Pro-Flo) and have noticed that some on this board do not recommend it either. I've also noticed that Summit carries a better selection than other parts suppliers - I just got my Jeg's catalog and they only sell Holley and Edelbrock systems - no Accel... Is this a "sign"
Any feedback would be appreciated.
TIA
Andrew

brutalform

Why not check out the "alternate intake" board. There is alot of good stuff there.

ws6transam

For what its worth, I developed a prototype eight-channel EGT module for use with aftermarket fuel injection systems. I've plumbed my engine with eight EGT sensors and simultaneously measured EGT on all eight cylinders while under full load with the Miniram. The car made 396 RWHP on the chassis dyno. Temperatures on all eight cylinders were within 90 degrees of one another: Cylinder five was the coldest and cylinder seven was the hottest. IIRC, temps were in the 1350 degree range.

So, when it comes to airflow distribution problems, it seems the Miniram isnt as bad as you are making it out to be, at least in the 400 to 500 HP region, anyway.

This is on a 10.6:1 Minirammed 385 stroker with ported AFR195 heads and a hydraulic roller cam.

http://www.ws6transam.org/miniram385f.jpg