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New project

  • Thread starter Thread starter QDRHRSE
  • Start date Start date Apr 22, 2004

QDRHRSE

New Member
Dec 31, 2002
1,590
0
0
Palmdale, CA
Apr 22, 2004
#1
  • Apr 22, 2004
  • #1
Howdy all!

I'm starting a new project. I bought a beautiful race only coupe that is easily ready to 10's (the chassis at least). It has full drag suspension, fuel system....everything. I want to make it a low 12 second motor car and a high 10 low 11 second car on nitrous. Currently I have an injected set up for it that includes a mild motor with an ecam, thumper heads,cobra intake, aeromotive fuel system, and an S trim with pulleys to make 15 or 18 lbs of boost. I want to ditch the injection and go carbed/N20. The biggest reason is money. I just bought a bigger house and BMW so I'm broke. Anyway, I figure I can sell the injection stuff and put together a quick consistent car cheap.

The car is race only, sheetmetal interior...gutted. 2800-2850 with me in it. I want to use the same motor combo only I want to throw on an intake,carb, plate unit on it. I know that I can get this combo to run the numbers that I want but I'm not sure what intake and carb to run. Victor Jr or Performer RPM? 650 or 750cfm- mechanical or vacuum secondaries? Back in the old days I would say "bigger is better" but now-a-days I'd rather match the combo. Also, back when I ran carbed cars they didn't have carbs like the Demons (I'm going to buy a Speed Demon by the way). The car has 4.10's and it has/is set up for 28x10.50 slicks. I figure it will make power t0 6500 rpm which is perfect for a Performer RPM and a little low for a small inch motor with a Victor Jr.

Does anybody have a combo like this that runs good? Thumper?? Tmoss?? I'm really going for the "less is more" kind of combination. Anybody? Ideas?
 

tmoss

Gettin Wired
Founding Member
Jun 28, 2001
7,153
32
128
Saint Louis, MO
Apr 23, 2004
#2
  • Apr 23, 2004
  • #2
All my carb experience is with Chebbies and Mopars, so I can't be a lot of help on anything but the carb setup. I see good comments about the RPM air gap. I could sure port an intake for ya though
 

Iowa91LX

Founding Member
May 6, 2001
2,616
0
0
Grundy Center, Iowa
Apr 24, 2004
#3
  • Apr 24, 2004
  • #3
I have talked to a couple dyno guys and they all said that the Performer RPM is a lazy intake and they have never seen much hp over 5000 RPM with it. I think that the Performer RPM is a street intake for a very mild motor. Whats the problem with the Victor Jr. intake? They work really well at lower RPMs and just keep going at 6000+
If it was me I would buy the Victor Jr for your combo. I dont know of anyone who runs low 12s on a performer RPM intake, but I know plenty of people who are going that and a lot faster with the Jr.
 

tmoss

Gettin Wired
Founding Member
Jun 28, 2001
7,153
32
128
Saint Louis, MO
Apr 24, 2004
#4
  • Apr 24, 2004
  • #4
Well yeah, your describing the difference between a street intake and a race intake. Nothing wrong with the Vibtor Jr, I ran it on my Lingenfelter 383 small block Comp Magnum 280 cammed 67 Camaro and it worked very well, but I had a 3,000 rpm B&M Super Hole Shot covnverted TH350 and 4:10 gears - the combo was well matched and it had great street manners. The gears and stall made up for the larger/shorter runners lack of low end torque compared to other smaller runner intakes. I ran a "smallish" 750 Holley 3310 vacuum secondary carb that I tuned with a 50cc front pump shot, fuel pump shot cam tuning set, spring tuning set for the vacuum secondaries and a selection of squirters. Ran very strong - 12.30 NA with 8.5:1 compression and 11.16 on 125 shot of nitrous. Never did put a blower on it cause it ran so good without it.
 
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