Novi ratio's vs boost

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10-19-2005, 08:12 AM
mrtbolt64

Novi ratio's vs boost

Hey guys this is my 1st post so hi to all and maybe I can get lucky here with a little help!

I built a 393 based 351, I am just a couple of weeks out now from getting this thing dynoed and I would like to try to have all my pulleys available at one time.

My goal for the car is to make around 700+ flywheel horse or to be able to run 9.80s or so in a 2900lb car.

The Novi is rated for a max impeller at 55000 I think. I am using a 7" crank 10 rib, I have a 3.5", 3.25", and a 3" blower pulley

by my math it equals these impeller speeds
3.5" = 46020 @6500
3.25" = 49560 @6500
3.0" = 53690 @6500

I know boost is relative to restriction and abilty of engine but I would just like to be close, rest of combo is below

393w comp 8.9 to 1
canfield heads 300 cfm @.6 INT .205 cfm @.55 EX
Super Vic efi, 90 mm throttle body
83lb inj
Hyd roller 230 @.05 .603 max lift int
250 @.05 .578 max lift ex
116 lobe center
Areomotive Eliminator kit
msd dig 6
Big Stuff 3 efi with 2 bar map
2" inch kooks headers

Think I have the correct pulleys to pull this off or I am going to need to search for an 8" crank pulley?

Thanks in advance

Chad
10-19-2005, 10:56 AM
BLOWNBY

You'll probably be around the 700 fwhp with the pullies 7" & 3" and you should be close to the 9's with a 2900# car.

You may inevitably want to get an 8" crank. The 8" and the 3.25 would be awesome combo, plus little to no issues on belt slip and a little more boost.

I plan to run a 3.13 and an 8.6" next year on a 2000 and 351. I currently have a T trim I'm looking to swap out. I shift at 6400.

You definitly can spin the blower at or above 55,000 rpms' especially on a serpentine setup.
10-19-2005, 12:20 PM
RSNovi

I ran a 6.80 and a 3.70 setup on my car with a 306. It made at least 650 rwhp on a 306 with unported TFS TW heads and a TFS Street Heat intake. I have no doubt that my car was capable of going 9.90s at 3250.
10-19-2005, 12:27 PM
BLOWNBY

Quote:

Originally Posted by RSNovi

I ran a 6.80 and a 3.70 setup on my car with a 306. It made at least 650 rwhp on a 306 with unported TFS TW heads and a TFS Street Heat intake. I have no doubt that my car was capable of going 9.90s at 3250.

What RPM and boost were you at?
Trying to do a little figuring for myself! :teeth:
10-19-2005, 12:33 PM
RSNovi

Quote:

Originally Posted by BLOWNBY

What RPM and boost were you at?
Trying to do a little figuring for myself! :teeth:

It made 16psi at 7300 RPMs, 23psi at 8000, and I never got a chance to look at 8500 rpms.
10-19-2005, 12:35 PM
BLOWNBY

At 8,000 you still barley spinning the Novi.
10-19-2005, 12:38 PM
RSNovi

I know. That is why I switched to the 1200. The NMRA has the blower too handicapped to be competitive in Real Street. Last year was the first year that I was able to figure out how to spin the motor high and make a little boost. If my cam could make power up to 8500, then the 2000 would still be on my car.
10-19-2005, 02:50 PM
mrtbolt64

Hey thanks for the reply's I still have a lot of work to do and this site has been helpful from what I have been searching on.
Here is a pic of my unfinisher turd

http://www2.propichosting.com/Images/450003240/3.jpg
10-19-2005, 03:10 PM
RSNovi

That is a small blower pulley.
10-19-2005, 04:02 PM
Chuck

Quote:

Originally Posted by RSNovi

That is a small blower pulley.

LOL!
10-19-2005, 07:33 PM
mrtbolt64

Its a new double keyway cog/serp design, so far it is very unsussesful.

I actually made my own pulleys, pic below

http://www2.propichosting.com/Images/450002242/3.jpg
10-19-2005, 10:27 PM
BLOWNBY

Those are some real nice pulley's!
10-22-2005, 05:02 AM
Mike93LX

"That is a small blower pulley."

Lmao.

Nice pulleys....What's up with the dual tensioner? All my supplied prints with my N2K came with those drawings cept mine only has 1 tensioner.

Blowby, where'd you get the 8.6" pulley anyway?
10-22-2005, 05:37 PM
RSNovi

My Novi 2k had a dual tensioner. It was a nice setup. That is why I went with a Novi 1200 over the S-trim this time around.
10-23-2005, 01:04 PM
BLOWNBY

Quote:

Originally Posted by Mike93LX

Blowby, where'd you get the 8.6" pulley anyway?

ASP made it for me...$$$$
But they can make virtually anything you need.

I wanted to be able to run as large a lower so as to be able to run a big SC pulley.

ie 3.13 or 3.33
10-24-2005, 10:44 AM
mrtbolt64

Quote:

Originally Posted by BLOWNBY

ASP made it for me...$$$$
But they can make virtually anything you need.

I wanted to be able to run as large a lower so as to be able to run a big SC pulley.

ie 3.13 or 3.33

How much did that run ya and what did you do for water pump clearence? Mines still got some room and I may go that route still.

Thanks
10-24-2005, 10:51 AM
BLOWNBY

You'll need an electric WP and it was like ~$350 and about 6 weeks lead time.

Do you run any other accesories other than an alt? If so you may need to stay with an 8"

I run PS as well but had some modifications done to the WP (has idler) and had a custom made PS braket and a NASCAR style pump (tiny)
10-24-2005, 11:31 PM
BillyBadAss

Here is a pic of my 12 rib setup with a 7-5/8" by 2.9" pulley setup. I shift at 5600 and make 18psi non IC or 15psi at the throttle body through a powerstroke deisel intercooler. BTW, ASP is great, they will build you a special pulley, whatever you like, they will make. Takes about a week. I will be putting a 3.5" pulley on for the street duty with a real 12 rib belt.

http://www.nloc.net/gallery/images/f...-321-25445.jpg