mark 5 block with mark 4 head
#1
mark 5 block with mark 4 head
I have a mark 5 block and i want to use my mark 4 heads.
i have head gaskets part# FelPro 1037 but i want to use ICS Titan Head Gaskets.
I have 467ci 10.2:1cr 174 supercharger on e85 with nitrous.
help help...
i have head gaskets part# FelPro 1037 but i want to use ICS Titan Head Gaskets.
I have 467ci 10.2:1cr 174 supercharger on e85 with nitrous.
help help...
#2
Moderator
Joined: Jul 1999
Posts: 17,171
Likes: 138
From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: mark 5 block with mark 4 head
Contact SCE and ask them. A MLS gasket from Felpro or Cometic is more than enough.
#3
Re: mark 5 block with mark 4 head
You have a nice car. I have a 87 TA 467ci 174 supercharger th400 moser ford 9" 3.55 minispool. all in the floor.
I did run it 3 years ago with the wrong head gasket it vaporlocked really bad. it had the th400 and stock 9 bolt 2.73 gears and a old pair of nova headers cramed in there with a single 3" EX.
the car ran 7.7 in 1/8 with a soft launch didnot want to brake nuthin.
this is still a full street car.
#4
Moderator
Joined: Jul 1999
Posts: 17,171
Likes: 138
From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: mark 5 block with mark 4 head
Your 7.7 would be equal to a 12.0 1/4 mile run. Not bad for a "street" car. My car is 100% race and not street legal.
Last year I blew out a 1017-1 gasket and replaced it with another 1017 to finish the season. I bought some Felpro MLS when I changed the heads over the winter but haven't had any track time yet this year. Give the MLS gaskets a good coating of copper spray on both sides and install. They're reusable and unless you damage them somehow, they're the last head gaskets you'll have to buy.
Last year I blew out a 1017-1 gasket and replaced it with another 1017 to finish the season. I bought some Felpro MLS when I changed the heads over the winter but haven't had any track time yet this year. Give the MLS gaskets a good coating of copper spray on both sides and install. They're reusable and unless you damage them somehow, they're the last head gaskets you'll have to buy.
#5
Re: mark 5 block with mark 4 head
Your 7.7 would be equal to a 12.0 1/4 mile run. Not bad for a "street" car. My car is 100% race and not street legal.
Last year I blew out a 1017-1 gasket and replaced it with another 1017 to finish the season. I bought some Felpro MLS when I changed the heads over the winter but haven't had any track time yet this year. Give the MLS gaskets a good coating of copper spray on both sides and install. They're reusable and unless you damage them somehow, they're the last head gaskets you'll have to buy.
Last year I blew out a 1017-1 gasket and replaced it with another 1017 to finish the season. I bought some Felpro MLS when I changed the heads over the winter but haven't had any track time yet this year. Give the MLS gaskets a good coating of copper spray on both sides and install. They're reusable and unless you damage them somehow, they're the last head gaskets you'll have to buy.
Well with my TA i want to skip all that and get a good gasket.
But that gen 5 block is hard to work with thay changed the water ports with the deck. I got mark 4 rectangle port heads i want to use.
You got 14:1cr you blew that gasket that can only handle 12.5:1cr to 13:1 safely.
with my B&M 174 supercharger making 5 psi of boost that i had last time i ran it. befor i restriped it. With the stock cr of 7:1 + boost it made 13:1cr at full boost by the B&M paper work. but now i have 10.2:1cr + boost that is 16.2:1cr
scarry i now but whut the ell i will try eney thing to catch that charger that I bilt..
#6
Moderator
Joined: Jul 1999
Posts: 17,171
Likes: 138
From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: mark 5 block with mark 4 head
When you start getting that kind of compression ratio, a copper head gasket and o-rings in the deck and in the head is about the safest way to go. No head gasket is completely fail proof.
#7
Re: mark 5 block with mark 4 head
Someone had to of dun this i am sur i am not the first to do this..
even if i went to Oring i still need a copper gasket and if i can find that i can cross refernce that with titan.. thay need to put there custermer service back on line
Thank you for the help i not trying to b a know it all cuz i sur dont. just trying to talk it out.. thay make bbc heads that fit both 4 and 5 blocks why not a gasket....just want my car back on the road and this is stoping me big time.
This ishope i dont getfor saying that. just had to do that LOL.. Later DuDe:::: you need to juce your 540 just a little so you can use the parachute mount.
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#8
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iTrader: (14)
Joined: Mar 2000
Posts: 43,169
Likes: 36
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
You have to use a Gen V gasket to fit the block. The head is okay with a Gen V gasket.
Since the Gen V blocks aren't as beefy, most high HP BBC's are Mark IV or Gen IV.
Since the Gen V blocks aren't as beefy, most high HP BBC's are Mark IV or Gen IV.
#9
Re: mark 5 block with mark 4 head
later man i hope it dont leek. thanks
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