'91 L98 Head Porting
Nov 12, 2018 | 12:24 PM
Thread Starter
Intermediate
Joined: Nov 2018
Posts: 31
Likes: 7
So here is my plans for the engine:
*-Port heads
*-2.00/1.570 LS 8mm
*-KMotion LS drop in kit
*-1.60 stainless steel rockers
*-Erson 226/234 cam w/.545 lift
*-Port upper and lower manifold, weld OEM lower
+-TPiS big runners
*-52mm throttle body
*-Headers
*-2xxx stall converter
Nov 12, 2018 | 08:26 PM
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
Drop in kit is springs/retainers?
Like the small stem conversion, who can the guides be purchased through (2.02/1.6 for Dart)
Those heads and seats are horrible from the factory!
Nov 12, 2018 | 08:47 PM
Thread Starter
Intermediate
Joined: Nov 2018
Posts: 31
Likes: 7
Quote:
Originally Posted by
cuisinartvette
Drop in kit is springs/retainers?
Like the small stem conversion, who can the guides be purchased through (2.02/1.6 for Dart)
Those heads and seats are horrible from the factory!
PEP has any guide you need, but these I'm going to use a 8mm guide liner
Picture of the KMotion kit.
Nov 13, 2018 | 11:30 AM
Melting Slicks
Joined: Nov 2013
Posts: 3,451
Likes: 336
From: Greater Cincinnati Area.
Related:
Lot of good information and some dyno match ups for various TPI components here:
Just a lot of good, general background links and information too. It's a good read.
http://garage.grumpysperformance.com...ith-tpi.10494/
Last edited by confab; Nov 13, 2018 at 11:31 AM .
Nov 13, 2018 | 06:34 PM
Thread Starter
Intermediate
Joined: Nov 2018
Posts: 31
Likes: 7
I decided for what I want to do, the OEM manifold even with big tube runners, was going to be too much work.
Decided on a TPiS manifold.
Nov 14, 2018 | 11:08 AM
Thread Starter
Intermediate
Joined: Nov 2018
Posts: 31
Likes: 7
Polished stainless rocker I'm using. Very nice quality vs price.
Nov 15, 2018 | 04:04 PM
Thread Starter
Intermediate
Joined: Nov 2018
Posts: 31
Likes: 7
Factory steel guides cut down to .500 OD and .315 guide liners installed.
Nov 15, 2018 | 04:05 PM
Thread Starter
Intermediate
Joined: Nov 2018
Posts: 31
Likes: 7
Multi-angle intake valve job and radius exhaust.
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Nov 16, 2018 | 08:21 PM
Thread Starter
Intermediate
Joined: Nov 2018
Posts: 31
Likes: 7
Nov 16, 2018 | 08:56 PM
Melting Slicks
Joined: Nov 2013
Posts: 3,451
Likes: 336
From: Greater Cincinnati Area.
Absolutely beautiful.. What tools are you using?
Nov 19, 2018 | 06:23 PM
Thread Starter
Intermediate
Joined: Nov 2018
Posts: 31
Likes: 7
Heads fitted with LS hardware.
Nov 20, 2018 | 05:03 PM
Thread Starter
Intermediate
Joined: Nov 2018
Posts: 31
Likes: 7
Nov 20, 2018 | 05:55 PM
Melting Slicks
Joined: Nov 2013
Posts: 3,451
Likes: 336
From: Greater Cincinnati Area.
Very nice.. What tools are you using to finish that? Carbide cutters and sanding rolls?
I've got a plenum and some runner that I'm going to port match and smooth out, and I want it to look exactly like yours when it is done.
Nov 20, 2018 | 05:59 PM
Thread Starter
Intermediate
Joined: Nov 2018
Posts: 31
Likes: 7
I use a SE5 aluma burr on everything.
Nov 20, 2018 | 07:08 PM
Le Mans Master
Joined: Aug 2017
Posts: 6,942
Likes: 1,490
From: New Jersey
Some damn good numbers. How is the velocity on those ports if you mind my asking?
Nov 20, 2018 | 09:49 PM
Melting Slicks
Joined: Nov 2013
Posts: 3,451
Likes: 336
From: Greater Cincinnati Area.
It's almost a shame to cover up something that pretty..
Nov 21, 2018 | 04:27 PM
Thread Starter
Intermediate
Joined: Nov 2018
Posts: 31
Likes: 7
Nov 21, 2018 | 11:30 PM
Melting Slicks
Joined: Nov 2013
Posts: 3,451
Likes: 336
From: Greater Cincinnati Area.
Awesome.. It's beautiful.
You ever consider becoming a forum sponsor?
Lot of guys would pay for work like that..
Nov 23, 2018 | 07:37 AM
Safety Car
Joined: Sep 2001
Posts: 4,157
Likes: 554
From: Glenbeulah Wi
Very nice job, they look and flow great.
Nov 23, 2018 | 08:20 PM
Intermediate
Joined: Jul 2014
Posts: 41
Likes: 19
From: plumb missouri
I see a man sharing his passion. Mr. Speiers has all the work he can handle. Thank you.
Last edited by hogandtow; Nov 23, 2018 at 08:22 PM .
Reason: Spelling