Vortec TPI Build
10-20-2013, 01:04 PM
#1
Supreme Member
Thread Starter
iTrader: (2)
Join Date: Mar 2002
Location: San Antonio TX
Posts: 2,516
Likes: 0
Received 3 Likes
on
3 Posts
Car: 1990 G92 IROC Z Miniram
Engine: 388cu 6.4 Liters
Transmission: G-Force T5
Axle/Gears: 3.73 Gears
Vortec TPI Build
I'm building a 355cu with a ported TPI Vortec Manifold, ZZ9 Cam, Edelbrock Runners fully siamesed with an inch of divider left, Vortec Heads with screw in studs and guide plates-2.02/1.60 valves fully ported, .028 head gasket, 2 valve pistions, 700r4/3.23 gears, Dyno Don Headers with dual cats and 3in Magnaflow Cat-back exhaust. What do y'all think the horsepower and quarter mile times will be? I do have all these parts. The car is a 1991 Z28
10-21-2013, 10:22 AM
#4
Supreme Member
iTrader: (7)
Join Date: Mar 2000
Location: Orange, CA
Posts: 5,674
Likes: 0
Received 106 Likes
on
65 Posts
Car: '90 Trans Am-12.45@110.71
Engine: 355 w/AFR 195's Elem. 400/430 HP/TQ
Transmission: Tremec T-56
Axle/Gears: 12 Bolt 3.73
Re: Vortec TPI Build
And now back to reality .....
289/RWHP
13.20 in the quarter mile.
289/RWHP
13.20 in the quarter mile.
10-21-2013, 03:57 PM
#5
Re: Vortec TPI Build
Cant go 2.02/1.600 valves in Vortec heads. 2.00" and 1.56" is the largest that will fit. And that's not really worth it. I can suggest some Manley 1.94/1.50 Race-Flo valves though. 
Should be around 290 to the wheels and run high 13's at Fontana.
Should be around 290 to the wheels and run high 13's at Fontana.
10-21-2013, 08:05 PM
#7
Supreme Member
Thread Starter
iTrader: (2)
Join Date: Mar 2002
Location: San Antonio TX
Posts: 2,516
Likes: 0
Received 3 Likes
on
3 Posts
Car: 1990 G92 IROC Z Miniram
Engine: 388cu 6.4 Liters
Transmission: G-Force T5
Axle/Gears: 3.73 Gears
Re: Vortec TPI Build
Sorry Kevin but it has been done before. I asked around to a couple of machine shops if it can be done and the said yes.
Trending Topics
10-22-2013, 04:09 PM
#10
Supreme Member
iTrader: (7)
Join Date: Mar 2000
Location: Orange, CA
Posts: 5,674
Likes: 0
Received 106 Likes
on
65 Posts
Car: '90 Trans Am-12.45@110.71
Engine: 355 w/AFR 195's Elem. 400/430 HP/TQ
Transmission: Tremec T-56
Axle/Gears: 12 Bolt 3.73
Re: Vortec TPI Build
That will take major work and $$$$$
You have to move the guides offset.
You have to move the guides offset.
10-23-2013, 08:14 PM
#11
Member
Join Date: Jan 2013
Location: O.C
Posts: 352
Likes: 0
Received 1 Like
on
1 Post
Car: Iroc-Z
Engine: 383ci
Transmission: 700hp 700r4
Axle/Gears: 3:45
Re: Vortec TPI Build
There is someone here with 113's... Sounds better to me.. There not for sell yet but most likely soon.
Thread
Thread Starter
Forum
Replies
Last Post
84z96L31vortec
Tech / General Engine
7
08-20-2017 12:16 AM
Fast355
DFI and ECM
14
12-02-2016 06:33 PM
Sanjay
Engine/Drivetrain/Suspension Parts for Sale
1
08-12-2015 03:41 PM