Dreaded #7
Thread Starter
Tech Contributor
Joined: Jan 2007
Posts: 19,245
Likes: 1,092
From: Dyer, IN
Well, this isn't about me, it's about those who have lost #7 cylinder, specifically with an LS1, and not running an LS6 or aftermarket intake. I am particularly interested because the LS6/aftermarket intake requires you to block of the air bleed pipe to the rear of the heads.
Le Mans Master
Joined: Dec 2000
Posts: 9,891
Likes: 1,829
From: Hot Springs AR
Ah, Now I understand. Personally, no, I don't know of anyone that's lost the #7 (or #8, which I bet would be similar) due to aftermarket intakes.
That being said, I've read at least one vendor that's had problems with the rear cylinders overheating due to steam pockets. Can't remember which one it was, and I don't want to drag the wrong person into the conversation.
Have a good one,
Mike
That being said, I've read at least one vendor that's had problems with the rear cylinders overheating due to steam pockets. Can't remember which one it was, and I don't want to drag the wrong person into the conversation.
Have a good one,
Mike
Le Mans Master
Joined: Jul 2002
Posts: 7,370
Likes: 8
From: Slave to the evil empire
Cruise-In V Veteran
St. Jude Donor '04
Don't get me wrong, I'm not trying to start anything but this thread is kind of vague and I'm trying to understand.
Does this have something to do specifically with the coolant crossover tube that is only on the LS-1 engine with the LS-1 intake manifold? because plenty of LS-1 engines came from GM with LS6 manifolds and I know I have seen threads about people losing the #7 cylinder with stock engines.
Does this have something to do specifically with the coolant crossover tube that is only on the LS-1 engine with the LS-1 intake manifold? because plenty of LS-1 engines came from GM with LS6 manifolds and I know I have seen threads about people losing the #7 cylinder with stock engines.
Thread Starter
Tech Contributor
Joined: Jan 2007
Posts: 19,245
Likes: 1,092
From: Dyer, IN
Don't get me wrong, I'm not trying to start anything but this thread is kind of vague and I'm trying to understand.
Does this have something to do specifically with the coolant crossover tube that is only on the LS-1 engine with the LS-1 intake manifold? because plenty of LS-1 engines came from GM with LS6 manifolds and I know I have seen threads about people losing the #7 cylinder with stock engines.
Does this have something to do specifically with the coolant crossover tube that is only on the LS-1 engine with the LS-1 intake manifold? because plenty of LS-1 engines came from GM with LS6 manifolds and I know I have seen threads about people losing the #7 cylinder with stock engines.
Melting Slicks
Joined: Aug 2006
Posts: 2,167
Likes: 11
From: Powell TN
Cruise-In VIII Veteran
Changing to an LS6 intake does not require you to change the air bleed pipe. You can leave them as they are and grind down the plastic "grid" on the bottom of the intake where the coolant lines run. I've had mine this way for ~5000 miles.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
2027 Corvette vs The World: Every Model vs Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!
Michael S. Palmer
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!
Joe Kucinski
Le Mans Master
Joined: Mar 2002
Posts: 5,955
Likes: 161
From: PNW
