Turbo City claims it will raise your vacuum if you have a modified cam, has anyone ever tried one? What improvements did you notice?

 

I would like to know this question too. I noticed it on their site but didn't know if it was worth it or not either. Anyone know of anyone that has tried this?

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Eric Natzke
91 Firebird 305 TBI (ZZ5 summer of "01")
ASCD Ram Air Hood-3" custom exaust-Flowmaster 80 Series-No Cat-Edelbrock TES Headers (coated)-March Pulleys-TBI Spacer-K&N Open ELement-TransGo Shift Kit-B&M Supercooler 28,000 GVW-Hypertech Thermomaster-160 Stat-3:42 GM Gears-Auburn Posi Unit-Edlebrock Strut Tower Brace-MSD Superconducters-MSD Cap & Rotor-MSD Blaster Coil-Rapidfire Plugs-265/50/R15 Tires-Emmison's all Gone
http://members.aol.com/j007golden/91firebird.html
For info on certain parts or mods go to the site below
http://members.aol.com/j007golden/modeval.html

 

i ran a 224/234 (equiv to 214/224 in a 305) 498/520 cam in my 350 with tbi and no map adjustment was necessary.

Unless you're getting really crazy with it you should be ok.

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Shane Buss 92 Firebird 355, Holley 750 Carb, Vortec 1.94/1.50 Heads (Ported,Polished,Milled .025), 10:1 Comp Ratio, Cam Specs 224/234 498/520, 1.6 Roller Rockers, Hooker Headers, Flowmaster, !Cat, 3.73 Posi, Msd 6A Ignition Cyb. Speedo box
http://users.ev1.net/~sdbuss/index.html

Note all girls on web page are x's, and will be removed when i get more time

OH i forgot. WEIAND SUPERCHARGER

 

Those times on your site are w/o the blower right????? Shouldn't you be WAY down in the 13's>>>>>>maybee 12's w those mods(no blower)?????

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Alex (AKA chevyboy) '91 RS 327 stroker, trans-go shift kit>> manual valve body, cat-delete, MSD (ignition, coil, 2-step, timing retard/ advance),Flowmaster, complete Edelbrock suspension including shocks, struts and lowering springs. CRAGAR drag wheels. Lowered 2.25" in front and 1.5" in rear....Best E/T 12.84 @109 mph...(got spray?)plus more!!

 

the map adjuster is crap

get a custom chip instead


and chevyboy, to answer for shane, he ran a 13.6 with the 214/224 cam , holley dual plane projection manifold, and pizza cutter tires

I think he only got to run the 224/234 single plane in the 1/8th mile