TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

my TBI upgrade path

Thread Tools
 
Search this Thread
 
Old Oct 30, 2005 | 08:57 PM
  #1  
xpndbl3's Avatar
Thread Starter
Supreme Member
iTrader: (5)
 
Joined: Jan 2002
Posts: 13,622
Likes: 5
From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
my TBI upgrade path

i'm putting together a 350 TBI setup for a fullsize chevy. figured ask your suggestions on my buildup:

let me know if i should choose a different cam or not, motor won't see the high side of 5,000 RPMs ever while towing or 4x4ing.

Summit K1102 Cam/lifters 204/214@.050 or use crane 2030 or similar?
Edelbrock 3704 intake---although could i use a performer RPM and an adapter plate to save $$?
Crane 99848 springs
Long tube headers, y-pipe 3" single exhaust with high flow cat and 40 series flowmaster
Vortec heads or ported 083 TPI 350 heads
Wait4Me tune or from TBIchips.com for the computer

I will also be removing the ridge off the TBI and adding an injector spacer as well.
Reply
Old Oct 30, 2005 | 09:05 PM
  #2  
dwillis's Avatar
Senior Member
iTrader: (6)
 
Joined: May 2005
Posts: 751
Likes: 0
From: Beech Bluff,TN
Car: 1991 Trans Am Convertible
Engine: 305 TPI
Transmission: T5
Axle/Gears: 3:08
two suggestions
rpm intake and adapter...cheeper and better
howells engineering for computer work
Reply
Old Oct 30, 2005 | 10:06 PM
  #3  
xpndbl3's Avatar
Thread Starter
Supreme Member
iTrader: (5)
 
Joined: Jan 2002
Posts: 13,622
Likes: 5
From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
any other suggestions on cam/etc?
Reply
Old Oct 30, 2005 | 10:31 PM
  #4  
BronYrAur's Avatar
Supreme Member
iTrader: (1)
 
Joined: Jun 2002
Posts: 1,843
Likes: 2
From: Chicago, IL
Car: 91 Camaro RS Convertible
Engine: 305 TBI
Transmission: 5-Speed
Axle/Gears: 3.42
That 204/214 cam should be a good choice, you can make some solid power with that. I would definitely say to go with an RPM intake with an adapter, especially since clearance wouldn't be a problem I'm sure in a fullsize. What injectors are you running, are they stock 350 truck injectors? Make sure you have a good fuel pump that will hold at least 15psi under load without dropping at all.

I would also say for the manifold, get a Performer RPM over the RPM Air Gap. You're going to want more plenum heat there, my opinion. I've heard of throttle blades icing with air gap intakes. You might even consider a single plane intake, they seem to make the most power in TBI apps.

You'll never see full power potential unless you burn the PROM yourself, the mail order will get it going but not to its full potential. There are some local guys that know their stuff, I'm about 15 minutes from you and obviously Jeremy knows his stuff in prom tuning.
Reply
Old Oct 30, 2005 | 10:42 PM
  #5  
xpndbl3's Avatar
Thread Starter
Supreme Member
iTrader: (5)
 
Joined: Jan 2002
Posts: 13,622
Likes: 5
From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Originally posted by BronYrAur

You'll never see full power potential unless you burn the PROM yourself, the mail order will get it going but not to its full potential. There are some local guys that know their stuff, I'm about 15 minutes from you and obviously Jeremy knows his stuff in prom tuning.
stock injectors from a 350 motor. who knows on the fuel pump, right now it's the factory TBI pump, but i can swap it out for a aftermarket as needed. I'll probably be locating a RPM intake from a swap meet and go with that. Also, I might hit up you or jeremy come spring when i put this motor into the truck since i'm putting it together while building 4 others this winter, so i'll be pretty busy. Then there's the issue of my camaro's motor swap while it's in the garage as well. But I'll keep you and jeremy in mind when chip time comes I suppose.
Reply
Old Oct 31, 2005 | 12:51 AM
  #6  
NEEDforSPEED's Avatar
Supreme Member
 
Joined: May 2002
Posts: 3,036
Likes: 1
looks like you'll have some really good TQ from idea to 4,000rpms
and HP till 5,000 rpms.... id do the RPM intake and make an adpater, looks so far to be a really good set up for what your going for.... like was said mail order wont cut it....
Reply
Old Nov 9, 2005 | 02:52 PM
  #7  
xpndbl3's Avatar
Thread Starter
Supreme Member
iTrader: (5)
 
Joined: Jan 2002
Posts: 13,622
Likes: 5
From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
should be ordering all these parts this week. any last minute tips or suggestions?
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Bubbajones_ya
Cooling
24
Jul 6, 2024 08:32 PM
92firebirdguy
TBI
59
Sep 1, 2016 07:53 AM
Glowsock
Tech / General Engine
2
Sep 11, 2015 11:09 PM
Wylecoyote08
Engine Swap
3
Sep 8, 2015 08:26 AM
Billy Decker
Engine/Drivetrain/Suspension Wanted
0
Sep 4, 2015 03:46 PM




All times are GMT -5. The time now is 02:03 AM.