Vortec heads, TPI manifold, high flow runners, and 1.6 rockers......good combo?
#1
Member
Thread Starter
Join Date: Jul 1999
Location: Atlanta, GA/ Clemson, SC
Posts: 437
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Camaro Z28
Transmission: T56
Vortec heads, TPI manifold, high flow runners, and 1.6 rockers......good combo?
I'm looking at getting a set of Vortec heads for my car along with the SDPC Vortec TPI base. While I'm at it, I'll go ahead and get some high flow runners (probably AS&M). I'll still be using the stock shortblock and cam for now. Do you think that going ahead and putting some 1.6 rockers on at the same time will be beneficial? What kind of power do you think this combo would put out? All my existing mods are in my sig. Thanks in advance for any input.
Stephen
------------------
1991 Z28 - 350 TPI, T56, McLeod street clutch, LT4 pressure plate, Pro 5.0 shifter, ported plenum & runners, AFPR, Hooker shorty headers w/o AIR, Flowmaster muffler, homeade ram-air, SSM subframe connectors, Kenny Brown STB, Global West steering box brace, Steve Spohn adjustable torque arm and T56 crossmember
Stephen
------------------
1991 Z28 - 350 TPI, T56, McLeod street clutch, LT4 pressure plate, Pro 5.0 shifter, ported plenum & runners, AFPR, Hooker shorty headers w/o AIR, Flowmaster muffler, homeade ram-air, SSM subframe connectors, Kenny Brown STB, Global West steering box brace, Steve Spohn adjustable torque arm and T56 crossmember
#2
Member
Thread Starter
Join Date: Jul 1999
Location: Atlanta, GA/ Clemson, SC
Posts: 437
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Camaro Z28
Transmission: T56
Also, what do you think the power band would be on this motor? Would the cam be the limiting factor in this setup, even with the 1.6 rockers? Thanks
Stephen
Stephen
#3
Supreme Member
iTrader: (1)
Join Date: Feb 2000
Location: Savannah, GA
Posts: 2,361
Likes: 0
Received 1 Like
on
1 Post
Car: 1997 Jeep Wrangler
Engine: 4.0L
Transmission: 5 speed
Axle/Gears: 8.8 rear, 4.56 gears, 4:1 transfer
You can't put a good cam in there without modifing the heads. The stock valve springs can't handle the additional lift so I'd say the limiting factor in your combo are the HEADS.
------------------
86 Camaro Sport
LT1 Induction
383 Speed-O-Motive Crate Engine, Raptor 700R4 Tranmission, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Hooker Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project
Moderator at SE ThirdGen
------------------
86 Camaro Sport
LT1 Induction
383 Speed-O-Motive Crate Engine, Raptor 700R4 Tranmission, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Hooker Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project
Moderator at SE ThirdGen
#4
Supreme Member
iTrader: (1)
Join Date: Dec 1999
Location: Mays Landing NJ
Posts: 4,335
Likes: 0
Received 4 Likes
on
4 Posts
Car: 2018 Camaro SS
Engine: LT1 w/Paxton 1500SL
<font face="Verdana, Arial" size="2">Originally posted by John Millican:
You can't put a good cam in there without modifing the heads. The stock valve springs can't handle the additional lift so I'd say the limiting factor in your combo are the HEADS.
</font>
You can't put a good cam in there without modifing the heads. The stock valve springs can't handle the additional lift so I'd say the limiting factor in your combo are the HEADS.
</font>
[This message has been edited by fly89gta (edited November 10, 2001).]
#5
I hope it is a good combo because I have the heads, intake, and 1.6 rockers on the kitchen table waiting to be installed. I am going to be getting runners soon too. I bought the upgraded heads, machined for screw in studs, guide plates, and .550 max lift springs. I plan on going with an LT4 hot cam down the road.
------------------
-='89 Iroc-Z - 350 TPI =-
------------------
-='89 Iroc-Z - 350 TPI =-
#6
Member
Thread Starter
Join Date: Jul 1999
Location: Atlanta, GA/ Clemson, SC
Posts: 437
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Camaro Z28
Transmission: T56
Well like I said, I'll be putting Vortec heads on so they won't be the limiting factor. I'm just wondering if the stock cam with 1.6 rockers will be able to do the job. What type of power do you think it would make and at what rpm? Down the road when I get a new shortblock, I plan on going with the LT4 Hot Cam also.
Thanks
Thanks
#7
Moderator
iTrader: (1)
The stock Vortec heads are good to about .460-.470" lift, so with a stock TPI cam and 1.6 rockers you'll be fine. If you're gonna get the AS&M runners, get the semi-siamesed runners. After that the cam will be the limiting factor, but you should still make some good power.
------------------
1991 Camaro Z28
5.7L 5-Speed (originally 305)
317 RWHP, 418 RWTQ
13.23 @ 107.62 MPH (2.10 60')
Southern California
Member: SoCal 3rd Gen F-Bodies
Member: SoCal F-Bodies
-=ICON Motorsports=-
------------------
1991 Camaro Z28
5.7L 5-Speed (originally 305)
317 RWHP, 418 RWTQ
13.23 @ 107.62 MPH (2.10 60')
Southern California
Member: SoCal 3rd Gen F-Bodies
Member: SoCal F-Bodies
-=ICON Motorsports=-
Trending Topics
#8
Hehe Steve91Z28 sounds like we think a lot alike. I should have 1/4 times for my set up by the end of November. Email me if you got any questions about how well it goes together. Ehelmsin@hotmail.com
------------------
-='89 Iroc-Z - 350 TPI =-
[This message has been edited by BitchinCamaro (edited November 11, 2001).]
------------------
-='89 Iroc-Z - 350 TPI =-
[This message has been edited by BitchinCamaro (edited November 11, 2001).]
Thread
Thread Starter
Forum
Replies
Last Post
84z96L31vortec
Tech / General Engine
7
08-20-2017 12:16 AM
L98GTA87
Engine/Drivetrain/Suspension Wanted
1
08-11-2015 06:55 PM
84z96L31vortec
North East Region
1
08-10-2015 08:27 PM