New Setup...Trans Question

Ok guys, the new setup is listed below:

351 Cleveland with 2 V heads
.030 over
2.055 Intake / 1.71 Exhaust Manley Swirled Stainless Valve
.519/.519 lift cam 270H Comp Cams with matching springs
3A valve job
Erson Roller Rockers riding on a Crane Cam Conversion kit
Hardened Pushrods
Speed Pro Hypereutectic 9.5:1 Compression Pistons
Canton 7qt oil pan w/ Crank scraper
1 3/4" Hooker Comp Headers
2.5'' dual exhaust, awaiting H-Pipe
Edelbrock Performer intake
Road Demon 625 carb
Pertronix Ignitor II Ignition

Going for 375 at the crank. Problem is my transmission, an FMX, was just rebuilt new, and a B&M shiftkit installed, stage II Street/Strip setting. A slightly higher than stock converter installed, no more than 2500 RPMs. I know the FMX is the heavy beast, and more parasitic than others, so what type of loss is typical from them. Going from 375 at the crank, what type of power should I expect to see at the wheels?

I appreciate the help guys.

302 coupe said:

I think the FMX sits right between the C4 and the C6 as far as parasitic loss is concerned. I wouldn't worry about it....

As far as power, I'd go with a bigger carb but for street driving you won't notice much difference. I'd say 330 at the fly, 270ish at the wheels. 375hp is asking a lot for the 2V heads and 9.5:1 compression.....

Click to expand...

I'm going with a 750 Holley once I get it rebuilt. Just sitting here waiting for me to rebuild it.

My machinist says 375 is conservative with the way the heads sit right now...not sure why, but he's pretty confident on 375+. I guess we'll find out soon enough.

It's just a set of stock 2v heads which are given some better valves. They're topped off with the valves mentioned above (2.055/1.71). The ports are still abnormally large for a motor of it's size. I'm running a .519/.519 cam. I would have preferred to run some 10.5:1 Forged pistons, but budget was tight, and decided against it. Running what is supposed to be the 9.5:1 hyper's required milling down the head to achieve the proper CR with my open chambers.