LT4 intake manifold
LT4 intake manifold
Ok i got a port and polished lt4 intake manifold from i guy i know and i was wondering if i will see any gains in this alone from a stock lt1 intake manifold? Now the port and polish is to the max and the lt4 intake mani. was orginally on a turbo lt1. Now will my hp numbers climb alittle or will i just see better gains in with a bigger cam then the lt4 hotcam. I have a cc306 in my garage and hopefully get some good numbers out of that. Any replys with be greatly appreciated.
Thanks, Zack
Thanks, Zack
Re: LT4 intake manifold
Originally Posted by black97z28LT1
Ok i got a port and polished lt4 intake manifold from i guy i know and i was wondering if i will see any gains in this alone from a stock lt1 intake manifold? Now the port and polish is to the max and the lt4 intake mani. was orginally on a turbo lt1. Now will my hp numbers climb alittle or will i just see better gains in with a bigger cam then the lt4 hotcam. I have a cc306 in my garage and hopefully get some good numbers out of that. Any replys with be greatly appreciated.
Thanks, Zack
Thanks, Zack

Re: LT4 intake manifold
hmm...thanks guys. I was going to order the 195cc LT4 competetion heads from AFR but there was a 16week backorder on them. So i guess im gonna have to wait to put the intake on. Funny thing is, is that the intake worked on his lt1 p&p heads. Maybe he made so minor adjustments to the heads in the process. thanks again
Re: LT4 intake manifold
Originally Posted by black97z28LT1
hmm...thanks guys. I was going to order the 195cc LT4 competetion heads from AFR but there was a 16week backorder on them. So i guess im gonna have to wait to put the intake on. Funny thing is, is that the intake worked on his lt1 p&p heads. Maybe he made so minor adjustments to the heads in the process. thanks again 

has 54 CC Combustion Chamber w/ 2.02 Int. 1.6 Exh... they arent on there anymore, but they were never used and went for $1400...just keep your eye out...
Re: LT4 intake manifold
Ill be sure to start keeping a good eye out. Winter is coming, lol. And btw...thanks for the FAST replys! Amazing, i post then not more then 3mins later i have the answers to my questions. I love forums
Re: LT4 intake manifold
I think LT4 intakes work on LT1 heads. I almost bought a camaro that had just an LT4 intake put on stock LT1 heads, with no mods done. So it should work, it's just that you won't see any power gains from JUST the intake. It might create a bottle neck effect and give you the same as a normal stock LT1 intake. Get the LT4 heads to match the LT4 intake, then you'll notice a difference.
Re: LT4 intake manifold
ok...well im gonna wait til im ready to put the cc306 in. So by then i should have my mind made up about some Lt4 heads. So i think no matter what im gonna wait on a good pair of p&p heads. Gotta get to that 400 mark ya know
Re: LT4 intake manifold
Originally Posted by Dave89IROC
won't work on LT1 heads, the ports are raised and won't line up correctly
It's kinda depressing, knowing some of one's posts are for naught.
Last edited by arnie; Jul 12, 2005 at 10:25 PM.
Re: LT4 intake manifold
Originally Posted by arnie
You'd think with 17 hundred posts, you would have read by now, some posts by 'Arnie' or 'Injuneer' on this subject matter. To put bluntly, you are obviously posting guesswork. Do some homework, via searches.
Re: LT4 intake manifold
Originally Posted by Dave89IROC
won't work on LT1 heads, the ports are raised and won't line up correctly
Re: LT4 intake manifold
Originally Posted by ZMAN Z28
No offense, but question was addressed to 'Dave89'.... and it still stands.
Last edited by arnie; Jul 16, 2005 at 08:04 AM.


