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| General Turbo Buick Tech Technical discussions |
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I think Ive heard of high 9's, but probably more realistically, low 10's. You should also bellmouth the dutt neck inlet instead of leaving it in the as cast shape, where the entry walls are sharp edges. You can gain another 1psi on top of the gains already there by switching to a dutt neck, by simply bellmouthing the inlet and sawing off the rolled lips on the inlet and outlet of the steel up-pipe. Those lips are terrible for flow. It throws the stream into a serious tumble and heats the air up. I gained 2.5psi from the dutt neck, 1 psi from those mods I mentioned, and another 1psi from a 3.5" buickGN.com intake tube.
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i went 11.60 on a ta-49. i know its not fast but it helped the 49 because its a heavy car with steel wheels and i know there is more in it
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1987 Buick Grand National. 30 over 109, Forged Pistons, KN Performance "KHAI" Race Ported Heads and Intake, 204/214 cam, Precision 6031E , 50# MSD Inj., Razors Alky kit, 24 Row Stretched, Ta Performance DP, Rjc Pulleys, Dynomax Ultraflows, Hotwired Reds XP Pump, Billit Regulator, Rjc valve and plate, Powerlogger, 200r4, Pats 3200 10" lock up, Alky-Tweak Chip, Powerlogger, PLX Wideband, Vacuum Brakes, Poly Body Mounts. Front/Rear Braces. New Front Suspension, Red UMI Tubular Rears. Street Stars. Mickey Drags 275 60's. Rear Air Bags. Postons trunk kit, . Weight 3580# Brian Roman
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Ran that in TSS at the 06 Nats. Used a TA66 turbo, ported iron heads, 224 hydraulic roller,.040 JE pistons. Put the big neck stock intercooler on after noticing my stretch intercooler was busted. I was suprised that it didn't hurt my performance. That was at 26 or 27 lbs and zero knock. I'm sure there was more left but I didn't push it.
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Quote:
Thanks for the info...You helped make my decision to go with the Dutt neck Instead of spending the extra money (Possibly needlessly) on another intercooler. I am only looking for low 11's...I had a buddy that saw absolutely no gain with his car going to a V4 from a Dutt neck...That was on a mid 11sec car. My combo, cpt-66BB Gn-1 aluminums 208-201 FT cam 75's...TT chip...Dual Nozzle Alky...Yadda...Yadda...Yadda. Thanks,Shawn
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Shawn...magna pot stirrer!
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LinkBack to this Thread: http://www.turbobuick.com/forums/general-turbo-buick-tech/229890-how-fast-dutt-neck-intercooler.html
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| Posted By | For | Type | Date | |
| Tuning with Alky? - TurboBuicks.com | This thread | Refback | October 8th, 2007 10:17 PM | |
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