Originally Posted by tomcat

Hey, why not tunnel ram, EFI and blowers all at once? :evilb:

Seriously though, tunnel rams rule on any V-8. Height and cost are the only reasons not to use them. Take a peek at the latest sheet metal intakes for carbs if your local drag racing engine builder will let you. Some crazy stuff going on in those plenums.

Hi Dean!

Originally Posted by dennis r

Kelly o that is a nice engine what tunnel ram are you using and is it a m3 or m4 pro-charger om looking to do that combo this winter on my htm it has a 598 in it right now

Originally Posted by tripps

Yeah,all the pro-stock guys run TUNNEL RAM guess who used to run pro stock???? tripps

Originally Posted by nocigarette

ant time you can get the fuel a liitle higher up it helps with the adomazation, i dont know if i spelled that right.............anyway,,,,,,,,,tunnel rams are great it is just that blowers have come so far in tech it is just easier to supercharge something than tune a wicked tunnel ram set up.........a blower motor is a lot easier to tune than a na motor in my opinion...............

Originally Posted by wannabe

Let me splain it for you:

It's "atomization" where the fuel droplets are made small enough by flow turbulence so they burn properly.

Tunnel rams really work well from 4000 rpm's and above (like 7000). Since most of the Marine engines top out at around 5800 or so they are not always the best choice.

Wannabe

Originally Posted by tomcat

Hey Rob, many boat guys are using the Dart cast tunnel ram, but check out the long runners on that sheet metal intake. Do you know any more about that engine?

Originally Posted by mrhorsepower1

With new cylinder head technology with higher velocity intake ports it's easy to make 700-800 HP with a single 4 barrel set up. But, with a tunnel ram coupled with these new high speed airflow cylinder heads 800 horsepower + is very achievable. I done quite a few of these setups and yes...a set of well set up carbs and the engines are dockable and very dependable as well.

Originally Posted by wannabe

What would you say if I could give you NA engines that put out 800 hp on pump gas, idle at 600 rpm, have an "economy" mode for cruising that saved you 7-10% on fuel, cost no more than a good 800 hp engine does (say 18-20k) would this interest you Mrhorsepower? Or anyone else?

Wannabe

Originally Posted by Catmando

There's a drag boat(Loose Cannon I believe) that has an 813ci Ford "Mountain Motor" built by someone in Georgia. Hot boat mag ran an article on drag boats with this boat and motor mentioned. Do you know the engine builder?

Originally Posted by wannabe

What would you say if I could give you NA engines that put out 800 hp on pump gas, idle at 600 rpm, have an "economy" mode for cruising that saved you 7-10% on fuel, cost no more than a good 800 hp engine does (say 18-20k) would this interest you Mrhorsepower? Or anyone else?

Wannabe

Originally Posted by 2112

I already have these;

8.9 to 1 compression
one carb
875 horses at 6250 rpm

Fords:D

Originally Posted by wannabe

Carb=Old technology

These engines will have the latest EFI.

Wiggler- engines are in development, going out to SEMA to do some market intelligence next week.

Mrhorsepower- I know you build your own engines, was just testing the waters.

Wannabe

Originally Posted by wannabe

Carb=Old technology

These engines will have the latest EFI.

Wiggler- engines are in development, going out to SEMA to do some market intelligence next week.

Mrhorsepower- I know you build your own engines, was just testing the waters.

Wannabe

Originally Posted by mrhorsepower1

Carbs may be "old" technology but if they where such CaveMan technology Prostock wouldn't making the type of power they do. I wouldn't knock carbs. I can make the same power with a carb than EFI for alot less money. We also currently hold the IHRA World's fastest single 4 barrel record out of my shop @ 6.70 @ 207 with a powerglide trans. NO power adder( NOS , blower ect.) all engine. I do agree EFI is nice and I am doing more and more of it but carbs can still make some AWESOME Horsepower. PM Wannabe with some details on your EFI system.

Originally Posted by vtec

With EFI you have to amortize the expense of development over many units of the same design, i.e. cubic inch, heads, cam, rpm, compression ration, etc. for it to make economic sense.

Then, there is the per unit expense of computer, sensors, throttle body, etc.

Although you may save fuel (in the future), with EFI you have to pay upfront (now)- so the savings are diminished by the time value of money (TVM).

Then there are difficulties diagnosing problems with an EFI engine (for the guy without the laptop and associated hardware/software). And, more sensors and electronics to fail. When the crank sensor fails........you have to be towed. Although the carb runs slightly sub-optimized it may be more reliable.

Pistons are old technology, V8's are old technology, heads with only 2 valves are old technology. Yes fuel injection is ultimately better from a horsepower, fuel efficiency, idle perspective- but- often carbs serve the purpose just fine.....at a reasonable price.

Now back to tunnel rams with carbs/efi.

Originally Posted by jdnca1

Here's Wette Vette's 598....picked up 4 mph by going from Single plane 1250 Dominator to Tunnel ram and 2X1050 Dominators over the winter with no other changes in single engine cat.... :drink: How's that for a real world comparison... :D oh yeah, and the boat accelerates harder just about everywhere (except maybe planing off) :D :D

Originally Posted by Strip Poker 388

sounds like it needed more air :drink:


Wouldnt if the motor had a lot of blowby the evac going to the aircleaner cause detination with the oil getting in the intake charge?

Originally Posted by mrhorsepower1

Wannabe,
What is the name of your company/shop? Or do you work for Sterling? Seen your from Milford,Mi.