Head Choice for modded C5 Z06
Thread Starter
Burning Brakes
Joined: Jan 2008
Posts: 1,235
Likes: 51
Head Choice for modded C5 Z06
Hey guys,
i screwed up a spark plug hole.and tried the back tap and didnt get very good results. Got the spark plug in deep enough to drive it till.the season is over.
Im trying to plan my next modifications to do over the winter.
I was originally planning to boost the car with a single turbo, but.now with the head issues im thinking it might be a good idea to get some aftermarket heads.
My car is currently :
Stock bottom end
MS4 cam with dual PAC springs/TI retainers
CHE trunion upgrade with Manton pushrods
ARH 1 7/8th headders to catless X-Pipe
Stock TI cat back
Halltech Killer Bee 2 intake
Romac 25% underdrive pulley
Car made 470/400 to the tire.
Best pass is 12.00 @119mph
Any heads that would complement my cam? Any heads that will complement a turbo setup if I choose to go that route down the line?
Im open for options.
Thanks!
i screwed up a spark plug hole.and tried the back tap and didnt get very good results. Got the spark plug in deep enough to drive it till.the season is over.
Im trying to plan my next modifications to do over the winter.
I was originally planning to boost the car with a single turbo, but.now with the head issues im thinking it might be a good idea to get some aftermarket heads.
My car is currently :
Stock bottom end
MS4 cam with dual PAC springs/TI retainers
CHE trunion upgrade with Manton pushrods
ARH 1 7/8th headders to catless X-Pipe
Stock TI cat back
Halltech Killer Bee 2 intake
Romac 25% underdrive pulley
Car made 470/400 to the tire.
Best pass is 12.00 @119mph
Any heads that would complement my cam? Any heads that will complement a turbo setup if I choose to go that route down the line?
Im open for options.
Thanks!
Last edited by Georgies; Oct 1, 2018 at 09:58 AM.
Pro
Joined: Jan 2017
Posts: 638
Likes: 70
Call TSP since they made your cam. Quite a few cars on LS1 tech running MS4 with PRC stage 2.5 with very good results. I've personally bought TF 220's from Tooley before which I was very happy with. But I'm going to try PRC 227's this time around.
Drifting
Joined: Dec 2000
Posts: 1,255
Likes: 50
From: Clayton, NC north carolina
you can time sert the head for the sparkplug issue I have one in mine and it has worked out great....
http://www.timesert.com/html/sparkplug.html
if you really want heads my vote is for Mast 225 …. they are on sale for the bare head.,,, they are a bit more pricy than most but the 11^ valve angle is very nice and im a bit bias... I went to highschool with Cary Chonarid (the guy that used to own ETP and then went to work for Mast until recently) so the heads are his design. plus they work....really well.
http://www.timesert.com/html/sparkplug.html
if you really want heads my vote is for Mast 225 …. they are on sale for the bare head.,,, they are a bit more pricy than most but the 11^ valve angle is very nice and im a bit bias... I went to highschool with Cary Chonarid (the guy that used to own ETP and then went to work for Mast until recently) so the heads are his design. plus they work....really well.
Thread Starter
Burning Brakes
Joined: Jan 2008
Posts: 1,235
Likes: 51
Thread Starter
Burning Brakes
Joined: Jan 2008
Posts: 1,235
Likes: 51
yes exactly. I guess you have a point, im all for saving money, but not at the expense of quality. Is the only difference the machining of ports?? They guy at TSP couldnt disclose that info loi. I would assume both are the same castings...
Melting Slicks
Joined: Nov 2013
Posts: 2,049
Likes: 316
From: USA
Yeah I think they sell both their custom casting as-is, or that same casting, then also put thru their CNC program. Might be able to mill down the head a little too, to bump compression ratio a bit, if you have the piston to valve clearance.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
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
Pro
Joined: Jun 2015
Posts: 551
Likes: 102
From: Madison WI
Thread Starter
Burning Brakes
Joined: Jan 2008
Posts: 1,235
Likes: 51
Id like to go FI down the line. Maybe leave the cc bigger?
Acct Suspended APR 2026 by request
Joined: Dec 2010
Posts: 10,367
Likes: 1,272
2020 Corvette of the Year Finalist (performance mods)
C5 of Year Winner (performance mods) 2019
if you want to boost it plan on swapping cams as well, the one you have is less than ideal for boost... as far as heads, you can easily make 800 or more on stock cast 243s/799s so those would work fine if you don't want to go too crazy
Last edited by StingrayRebel; Oct 2, 2018 at 11:25 PM.