Porting the LT1 intake
Thread Starter
Melting Slicks
Joined: Sep 2000
Posts: 2,710
Likes: 1
From: Green Bay WI
Porting the LT1 intake
Anyone have any experience doing this themselves? I'm either going to go with an LPE ported intake or do it myself. Any suggestions to take the guess-work out of it? TIA! :)
Melting Slicks
Joined: Jan 2000
Posts: 3,418
Likes: 1
From: NW Chicago Suburbs
Re: Porting the LT1 intake
I've got a 94-97 LT1 intake in my workshop along with a set of aluminum LT1 heads. While the head's intake ports are really bad and in need of gasket matching, the intake manifold's intake ports are pretty good. Hogging out the manifold's intake ports won't help the mismatch, it'll just exagerate it.
I'd leave the intake manifold alone and start saving for the heads, that's where the bottleneck is (on the intake side).
Eric
I'd leave the intake manifold alone and start saving for the heads, that's where the bottleneck is (on the intake side).
Eric
Race Director
Joined: Jan 2002
Posts: 12,261
Likes: 85
From: O'Fallon Missouri
Re: Porting the LT1 intake (silver & red CE)
I'd leave the intake manifold alone and start saving for the heads, that's where the bottleneck is (on the intake side).
Racer
Joined: Aug 2002
Posts: 363
Likes: 0
From: Toronto Ont
Re: Porting the LT1 intake (silver & red CE)
I've got a 94-97 LT1 intake in my workshop along with a set of aluminum LT1 heads. While the head's intake ports are really bad and in need of gasket matching, the intake manifold's intake ports are pretty good. Hogging out the manifold's intake ports won't help the mismatch, it'll just exagerate it.
I'd leave the intake manifold alone and start saving for the heads, that's where the bottleneck is (on the intake side).
Eric
I'd leave the intake manifold alone and start saving for the heads, that's where the bottleneck is (on the intake side).
Eric
Good info, thanks....i thought about that. now that changes my mind.....
ya the heads go along a ported intake....
Le Mans Master
Joined: Oct 2000
Posts: 6,362
Likes: 30
From: Oak Harbor WA
Re: Porting the LT1 intake (blk95)
Yeah, unless you are looking for every single piece of horsepower possible it is a waste of time. The heads need the work. The intake really isn't much more than a box with holes in it.
Thread Starter
Melting Slicks
Joined: Sep 2000
Posts: 2,710
Likes: 1
From: Green Bay WI
Re: Porting the LT1 intake (cprgmr)
Thanks for the replies guys - great info! Interesting though that on Lingenfelter's site they say that their port of the intake is good for 15 horses. Think it's just a sales job or not?
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Race Director
Joined: Jan 2002
Posts: 12,261
Likes: 85
From: O'Fallon Missouri
Re: Porting the LT1 intake (cprgmr)
Lingenfelter's site they say that their port of the intake is good for 15 horses. Think it's just a sales job or not?
Burning Brakes
Joined: Jun 2001
Posts: 838
Likes: 2
From: Out by the bridge again, TampaBay
Re: Porting the LT1 intake (cprgmr)
There is no reason to port an LT1 intake except to increase the throttle body bore. Stock is good up to 52mm and you really don't need more than that without a lot more cubes flowing a lot more air.
Spend the money for the best heads and valve train you can. That is where the biggest gains are. CNC's heads are very good. :chevy
Spend the money for the best heads and valve train you can. That is where the biggest gains are. CNC's heads are very good. :chevy
Thread Starter
Melting Slicks
Joined: Sep 2000
Posts: 2,710
Likes: 1
From: Green Bay WI
Re: Porting the LT1 intake (Half Fast)
There is no reason to port an LT1 intake except to increase the throttle body bore. Stock is good up to 52mm and you really don't need more than that without a lot more cubes flowing a lot more air.
Spend the money for the best heads and valve train you can. That is where the biggest gains are. CNC's heads are very good. :chevy
Spend the money for the best heads and valve train you can. That is where the biggest gains are. CNC's heads are very good. :chevy
