Fast 95 Z28

I have been a lot of research on this topic. Since my car is a 98 model i have read that you need to grind the ribs off of the LS6 manifold. In doing so it will clear the stock LS1 coolant lines. I came up with an idea of instead buying a LS6 coolant crossover pipe I want to cut the stock lines and solder them. I would think this would mock up the same thing as the LS6 coolant crossover. and where the rear plugs would go I would just cut a small section of the LS1 lines and solder them in the back. I'm just curious if this would work to get the LS6 intake on my engine. I really don't want to spend $50 on the crossover line and i don't want to screw up the structural integrity of the LS6 intake by grinding off the ribs. They are there are a reason I would think. Does anyone think this would work?

Thanks

blue68

iTrader: (2)

i did it to the fronts, just cut, and plugged it with quick steel i bought from kragen, worked like a champ! not even a drip!

crossroads

iTrader: (5)

kept my LS1 lines due to all the stories of #7 piston and decided to spend the money else where, good luck

thunderstruck507

iTrader: (18)

I blocked off the rears by cutting the tubes off and flipping the things over so they work as block off plates once tightened

On the front I flattened it down then soldered it. No issues with it.

01ssreda4

iTrader: (96)

i dont think the ribs do ****. i grinded them all down then wapped the coolant lines softly with a hammer so they tuck a little closer to the valley cover and BAM the intake drops right on.

5.slow99

same here it works fine

thunderstruck507

iTrader: (18)

I had to do something since the fast sits so low

qwk93ta

iTrader: (13)

What are the stories about the #7 piston?

Joshiedoom

iTrader: (4)

They run lean, cooling them down helps

bczee

iTrader: (12)

Many have just grinded the ribs down and hammered the line lower without any problems. So you can do it either way. I just grinded down the ribs...no problem to date.

Fast 95 Z28

bump anyone else have any experience with this? I'm going to do the swap next week.

thebulgd

iTrader: (6)

I also ground the ribs and rapped n the existing lines with a rubber mallet, no fitment or any issues after 2 years

Slvr00Bird

iTrader: (2)

Just cut the coolant line and blocked of the back like others.. If I could go back and re-do it, I'd grind it down. Just like the idea of having coolant to the back. Those ribs aren't going to screw up the "structural integ."..

99Bluz28

iTrader: (35)

No problem either with grinding the ribs down, over 1 yr now.

01ssreda4

iTrader: (96)

there's your answer....

Fast 95 Z28

I'm just saying if those ribs aren't there for extra support then why are they there? Wouldn't GM just have kept using the LS1 lines for better cooling for cylinders 7 and 8. Cause then the intake would fit fine without those ribs there. Maybe they are there for the extra strength if you were going the forced induction route or nitrous?

Damian

iTrader: (89)

I've been blocking off the rear coolant passages since 2001, when the LS6 first came out. Never had a problem.

#7 does run lean, especially with a FAST intake but that can be taken care of with tuning of the fuel on that cylinder.

Fast 95 Z28

so do you think I shouldn't worry about it cylinders 7 and 8 on a 98 LS1 w/o egr? All I will be doing with the car is driving it around town and to the strip a few times. I'll probly never road race the car. I don't have the money right now to get it tuned so will that be a problem?

Joshiedoom

iTrader: (4)

I talked to some "senior" members of the Ls1 sites and this is the way to go...

Mat

They are simply there from the moulds used to case the intake. GM doesn't have any interest in making sure your LS6 intake works with nitrous of forced induction. The engineers don't think about that when they put it together. They think about reliability in a stock vehicle.

Removing them is the easiest way to get that intake on. If you don't feel comfortable then spend the money and get the crossover pipe. I wouldn't personally start soldering things and trying to make your own. Not that it's all that hard but because it's a heck of a lot more work than it's worth and in th end probably has a far greater chance of issues down the road.