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| Pontiac - Boost Turbo, supercharged, Nitrous, EFI & other Power Adders discussed here. |
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#1
09-22-2016, 09:31 AM
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Efi Intake Help
I am building a 461 currently Estimated at 550 hp/tq
Ported Butler heads XR288HR Cam car is 1978 trans am Transmission tremec tko600 rear gears 2:41 27" tall tires I currently have the Holley terminator system Bolted onto an Hurricane intake. Had the performer but the TB system didn't like it. So my questions are- Is it worth upgrading the TB system to MPI? If I upgrade what intake is recomended -Hurricane -Crosswind -Torker 2 -Victor or other? If this motor doesn't make me smile big enough I might put a few LBS of boost to it too... In a few years from now. Thanks
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#2
09-22-2016, 06:14 PM
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On the EFI side the Torker II EFI is called a "Victor" and the Victor EFI I believe is a Super Victor.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
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#3
09-22-2016, 06:31 PM
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I would switch to the Super Victor with the Dominator EFI if you go boosted later. For now I would probably keep what you have. What heads do you have, and what do they flow? If they flow over 300 fm at your cam lift I would swith to a Victor maybe. One thing that I would change definitely would be your gears. Have you driven it with those gears and the TKO? You'd probably never use 5th. I'd probably go to a 3.23- 3.42. JMO
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#4
09-22-2016, 08:04 PM
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fwiw, I have setup in my signature. Don't use 5th till 75 mph(about 2000rpm) which is still slow in Michigan but i'm considering ditching my 3.42 for 3.73 or 4 something. Just need to watch my 1st to make sure I don't make it useless. Also considering cam change to pull power band down a bit.
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462 Yc Block, zero deck Probe forged pistons 6cc relief, Scatt Hbeam rods floating pins aprox. 10.21 CR Comp Hyd-roller cam,roller lifters,springs ect. 236 244@ .050 108 LSA .511 lift, duration 289,297 @.oo6 Edelbrock Aluminum 87cc round port heads Larger valves ,ported polished and cut Powerjection3,T2 manifold, Try-y’s Flowcooler water pump. 71 formula with TKO600,hydraulic clutch 3.42 posi and 26 inch tire. 17x9 YO Honeycombs with Nitto 555's |
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#5
09-22-2016, 09:18 PM
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I have 3.89 gears with a 26" tire and will put it into 5th at 35mph, but that is pretty low. The lowest gear I've ran with the TKO-600 was 3.08, and I definitely was at full highway speed before even thinking of going into overdrive.
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__________________________________________ "How I learned to stop worrying and love the OHC Pontiac L6"  The Silver Buick- '77 Skylark coupe w/455, SPX, MegaSquirt 3 & TKO-600 (Drag Week 2011, 2012 & 2015!) 1969 Firebird with a turbo'd Pontiac L6 controlled by a MegaSquirt 3 and backed with a microsquirt controlled 4L60e and 4.56 gears! (Drag Week 2018!) |
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#6
09-23-2016, 08:06 AM
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Quote:
my flow sheet from butler Edelbrock 87cc intake 285 @.5 exhaust 227 @ .5
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#7
09-23-2016, 08:10 AM
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So what benefit do I get if i go from the Terminator Throttle body to Multi port injection?
Does it tune better, Make more power, Drive better?
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#8
09-23-2016, 08:19 AM
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Depends how big your cam is and how even your fuel distribution is with the throttle body.
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__________________________________________ "How I learned to stop worrying and love the OHC Pontiac L6" The Silver Buick- '77 Skylark coupe w/455, SPX, MegaSquirt 3 & TKO-600 (Drag Week 2011, 2012 & 2015!) 1969 Firebird with a turbo'd Pontiac L6 controlled by a MegaSquirt 3 and backed with a microsquirt controlled 4L60e and 4.56 gears! (Drag Week 2018!) |
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#9
09-23-2016, 08:24 AM
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If the injectors all flow the same the cylinder to cylinder fuel flow should be more even with multi port.
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#10
09-26-2016, 10:59 AM
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So the info i take from the responses is.
Keep my Current intake (a standard Hurricane) and don't bother upgrading my Holley terminator system to MPI, until I decide I want to boost the motor? Am i reading this correct?
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#11
09-26-2016, 11:05 AM
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I wouldn't "upgrade" unless you either have identified an issue you are having that it could resolve or because you simply want to.
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__________________________________________ "How I learned to stop worrying and love the OHC Pontiac L6" The Silver Buick- '77 Skylark coupe w/455, SPX, MegaSquirt 3 & TKO-600 (Drag Week 2011, 2012 & 2015!) 1969 Firebird with a turbo'd Pontiac L6 controlled by a MegaSquirt 3 and backed with a microsquirt controlled 4L60e and 4.56 gears! (Drag Week 2018!) |
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#12
09-26-2016, 11:25 AM
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Thank you theSilverBuick.
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