Can you modify L31 Vortec heads to work on a second-gen LT1?
#21
Le Mans Master
#22
If you are done "helping" then you don't need to keep commenting feces then. Am I right? You don't approve of me being on this forum asking questions and explaining what I want out of my engine? Too bad. I came on this forum seeking out the ideas of those who drive the cars that were built for performance. This is all a learning curve but some of your ideas I have considered and researched so I thank those for their suggestions that I was against early on. I can be respectful even if I don't agree with you or I am naive to your suggestions but show me the same respect even if you know damn well I am a novice.
#23
Drifting
In a lot of ways I feel like this is my fault I mean I did make the post ultimately asking for this... and I guess I'm sorry for that.
But sometimes I get the impression that mr TPIhoenix here is actually a long time member who really gets off on trolling.. his teaming of knowledge and ignorance is very unique and doesn't really jive to me. Someone who seeks information so fervently isn't normally this dense and certainly doesn't come up with this type of nonsense as a result of their reaserch. It's actually entertaining when you take a step back and realize how good he is at this.
But sometimes I get the impression that mr TPIhoenix here is actually a long time member who really gets off on trolling.. his teaming of knowledge and ignorance is very unique and doesn't really jive to me. Someone who seeks information so fervently isn't normally this dense and certainly doesn't come up with this type of nonsense as a result of their reaserch. It's actually entertaining when you take a step back and realize how good he is at this.
#24
In a lot of ways I feel like this is my fault I mean I did make the post ultimately asking for this... and I guess I'm sorry for that.
But sometimes I get the impression that mr TPIhoenix here is actually a long time member who really gets off on trolling.. his teaming of knowledge and ignorance is very unique and doesn't really jive to me. Someone who seeks information so fervently isn't normally this dense and certainly doesn't come up with this type of nonsense as a result of their reaserch. It's actually entertaining when you take a step back and realize how good he is at this.
But sometimes I get the impression that mr TPIhoenix here is actually a long time member who really gets off on trolling.. his teaming of knowledge and ignorance is very unique and doesn't really jive to me. Someone who seeks information so fervently isn't normally this dense and certainly doesn't come up with this type of nonsense as a result of their reaserch. It's actually entertaining when you take a step back and realize how good he is at this.
#25
Drifting
Pheonix.. tell me this? Ur trans am still stock?
Can you in any way disprove that you are a troll, or at least engage in troll ops? Have you actually done anything you have posted about in the last 3 years??
Can you in any way disprove that you are a troll, or at least engage in troll ops? Have you actually done anything you have posted about in the last 3 years??
#26
Drifting
The iron LT1 heads from caprices and roadmasters are supposed to be better than the aluminum LT1 head and are a “port than & bolt on deal”. If your heart is set on ditching aluminum and going to iron, this would be best bang for your buck.
The following users liked this post:
Phoenix'97 (05-05-2018)
#27
I am aware of the limitation with L31 Vortec heads, the restriction in cam lift. However, for my performance goals and desire to maintain factory fuel rated economy, the B-body lt1 camshaft or something improved with a modern lobe, is what I will probably end up going with. It won't be impressive by any of your standards, it won't be something to brag about, but it will be what I am seeking out of my LT1, just a fun and very reliable daily driver that is a fine balance between improved stockish performance and fuel economy. This is what I want.
Last edited by Phoenix'97; 05-05-2018 at 12:33 PM.
#28
Team Owner
Pro Mechanic
If you want the L31 heads so badly....why don't you just go get an L31 Vortec long block? Gad Damnit! There I go, helping again. That was a waste of typing!
Yes....yes. This tactic should work well for you.
I already did. Others did too. Here's how that worked out:
I already did. Others did too. Here's how that worked out:
Last edited by Tom400CFI; 05-05-2018 at 02:58 PM.
#30
I hate to waste things and I have grown fond of my LT1. There are ways to improve upon the engine and I will do so, as if it were a TPI L98.
Last edited by Phoenix'97; 05-05-2018 at 03:51 PM.
#31
Well, torque monster enough for me as a hot rodded second-generation LT1 daily driver. I still haven't been given an answer as to how hard it would be to convert iron Vortec heads to reverse-flow capable. Too bad no one makes such heads for the LT1 but then again I am in the minority with my performance goals.
#32
Le Mans Master
Because I want to salvage the LT1 block I have. Furthermore, I imagine the custom work required to swap the L31 block into my F-body and rewire and program the PCM would be more than paying a machine shop to customize SD Chevy Performance L31 vortec heads and then to have a TPI intake extrude honed and polished with AS&M runners and then have it all assembled back onto my LT1 block. I spent the money on my LT1 block, I am going to make sure I get that investment worth, even to have the block cleaned up and powder coated.
I hate to waste things and I have grown fond of my LT1. There are ways to improve upon the engine and I will do so, as if it were a TPI L98.
I hate to waste things and I have grown fond of my LT1. There are ways to improve upon the engine and I will do so, as if it were a TPI L98.
#33
Am I buying a new block or a used block? I am taking risks trying to throw in a used block with worn out internals and with a new block am I getting all the internals or are they sold separately? Do I need a certain PCM to run this engine or can I use my LT1 PCM? What changes to my stock LT1 wiring harness am I going to make depending on differences of sensor locations on the L31 block? After it is all said and done, it seems easier to just spend the money to modify the Vortec heads for reverse flow cooling so that my LT1 can use them and from there spend some money to improve upon a factory TPI intake. Oh, and not to forget, the necessary dynotune to ensure this new set-up works with my factory PCM. Then again for a coil-on-plug ignition system I am probably going to end up using an LS1 PCM but no biggie I suppose.
Last edited by Phoenix'97; 05-05-2018 at 05:14 PM.
#34
Le Mans Master
You quite literally just swap the crap from your lt1. You drop in a long block crate with vortec heads from GM, transfer everything from your old block to the new, do your coil on plug, and then you're done. There will probably be more fab work making the tpi provisions work with your wiring harness than anything else.
let me rephrase, the blocks are essentially identical.
let me rephrase, the blocks are essentially identical.
Last edited by 84 4+3; 05-05-2018 at 05:30 PM.
#35
You quite literally just swap the crap from your lt1. You drop in a long block crate with vortec heads from GM, transfer everything from your old block to the new, do your coil on plug, and then you're done. There will probably be more fab work making the tpi provisions work with your wiring harness than anything else.
let me rephrase, the blocks are essentially identical.
let me rephrase, the blocks are essentially identical.
The block in my car is a reman LT1 so it has fresh internals and low mileage. Short of replacing those parts with low friction bearings and other components, if they don't already exist, and a true roller timing chain, all for improved efficiency, it is better, financially, to use my existing block and modify accordingly. Yeah, my intended modifications will be pricey but no where near what it could be with the extreme of engine swaps and necessary accessories. I am just saying.
#36
You quite literally just swap the crap from your lt1. You drop in a long block crate with vortec heads from GM, transfer everything from your old block to the new, do your coil on plug, and then you're done. There will probably be more fab work making the tpi provisions work with your wiring harness than anything else.
let me rephrase, the blocks are essentially identical.
let me rephrase, the blocks are essentially identical.
#37
Team Owner
Pro Mechanic
Am I buying a new block or a used block? I am taking risks trying to throw in a used block with worn out internals and with a new block am I getting all the internals or are they sold separately? Do I need a certain PCM to run this engine or can I use my LT1 PCM? What changes to my stock LT1 wiring harness am I going to make depending on differences of sensor locations on the L31 block? After it is all said and done, it seems easier to just spend the money to modify the Vortec heads for reverse flow cooling so that my LT1 can use them and from there spend some money to improve upon a factory TPI intake. Oh, and not to forget, the necessary dynotune to ensure this new set-up works with my factory PCM. Then again for a coil-on-plug ignition system I am probably going to end up using an LS1 PCM but no biggie I suppose.
Aaaaand here is a prime example...ready? Check this out:
Short of replacing those parts with low friction bearings and other components, if they don't already exist, and a true roller timing chain, all for improved efficiency, it is better, financially, to use my existing block and modify accordingly. Yeah, my intended modifications will be pricey but no where near what it could be with the extreme of engine swaps and necessary accessories. I am just saying.
#38
I have learned in life that when people start bashing you in groups, they are jealous of something and trying to break your will. I won't let that happen so keep on hating with your posts. Anyone who references this forum and my posts who wishes to make similar modifications to their first-gen SBC or second-gen LT1 will have these comments and collection of insightful comments to read!
#39
Le Mans Master
If you want to put the vortec heads on an lt1 it possible but not inexpensive. The L31 heads are not better than the aluminum LT1 heads , neither is the iron version. GMPP will offers better versions of the vortec already drilled for standard sbc intake. Of course this is speculative right? Since your build is several years in the future.
#40
Le Mans Master
The question I posed for this post has still not been addressed. Everybody wants to do dissuade my build and that only pokes my curiosity as to why! Maybe in my research I already answered my own question, weld off the intake side coolant passages and expand the block side coolant passages to match the LT1. It is the complete reverse of modifying an LT1 aluminum head for an SBC block. Yes a machine shop would be dealing with iron but I would think they could do it if you have places that are willing to port iron heads.
I have learned in life that when people start bashing you in groups, they are jealous of something and trying to break your will. I won't let that happen so keep on hating with your posts. Anyone who references this forum and my posts who wishes to make similar modifications to their first-gen SBC or second-gen LT1 will have these comments and collection of insightful comments to read!
I have learned in life that when people start bashing you in groups, they are jealous of something and trying to break your will. I won't let that happen so keep on hating with your posts. Anyone who references this forum and my posts who wishes to make similar modifications to their first-gen SBC or second-gen LT1 will have these comments and collection of insightful comments to read!
And jealousy ain't the word that's for damn sure.
The following users liked this post:
Tom400CFI (05-06-2018)