Looking for advice
#51
Supreme Member
iTrader: (16)
Re: Looking for advice
Originally Posted by Mrbrent86
What heads would you suggest?I read aluminum could cause problems. And the Walbro 255 high pressure fuel pump I'm looking at says for 85-91, from Inline motor stores, would it work with my 82 CFI?
Now, when it comes to boost, any Gen1 SBC head will do, so long as it's in a safe compression range (no less than 72-cc). The stock Grand National Turbo heads flow horribly (if I showed you pictures, you wouldn't believe it), but because its boosted, they flow more efficiently than a naturally aspirated worked head. The turbo is going to push that air in their regardless how tiny the ports are. I wouldn't bother with aluminum heads, as I have seen them rip in half under detonation. Yes, they can easily be fixed (for a price), but why bother with that delay if it ever happened? The iron heads, although heavier, get the job done just as well, and in some cases, better. Trust me, you don't need to spend a lot of money on aftermarket heads, as I showed you earlier, that 350-TPI was running truck heads (worse flow than the heads that are already on your CFI), and it ran a best of 9.74 with them. That should tell you right there, with boost, the heads aren't that big of a deal for the numbers your looking to run. Yes, better heads wield better results, but it isn't necessary, not in a street car, anyways. Look what Tim was able to accomplish with an almost bone stock TPI engine....;
http://www.gmhightechperformance.com...350/index.html
#52
Thread Starter
Junior Member
Joined: Oct 2009
Posts: 28
Likes: 0
Received 0 Likes
on
0 Posts
From: NJ
Car: 82 Z28 Camaro
Engine: 305 5.0L V8 CFI
Transmission: automatic
Re: Looking for advice
So do you suggest getting a new or used TPI system? And I guess I'll go right ahead with ordering the Walbro 255 with the fuel line, but wait till I get the TPI system to replace the sending unit like you said while I do the pump, but the Walbro for Chevy I was looking at says 85-91 Camaro, will it work with mine? Suggestion on where to order the fuel line from and how much of it, and what disconnect tool, like I said before I read a lot of bad things about the plastic ones.
#53
Thread Starter
Junior Member
Joined: Oct 2009
Posts: 28
Likes: 0
Received 0 Likes
on
0 Posts
From: NJ
Car: 82 Z28 Camaro
Engine: 305 5.0L V8 CFI
Transmission: automatic
Re: Looking for advice
And I read further up that stock pistons could be a problem? I suppose I should forget the heads for now, and do something about the pistons before I throw on the Turbo?Again I might be getting ahead of myself, I'm just learning and you've been more than helpful. Got a call about officer training this morning(start this summer) and I may be leaving for ranger school in jan.(depending on the shoulder) so I wanna get the ball rolling and make up my mind bc I plan on ordering all of these parts at once.
#54
Supreme Member
iTrader: (16)
Re: Looking for advice
Originally Posted by Mrbrent86
So do you suggest getting a new or used TPI system? And I guess I'll go right ahead with ordering the Walbro 255 with the fuel line, but wait till I get the TPI system to replace the sending unit like you said while I do the pump, but the Walbro for Chevy I was looking at says 85-91 Camaro, will it work with mine? Suggestion on where to order the fuel line from and how much of it, and what disconnect tool, like I said before I read a lot of bad things about the plastic ones....
#56
Supreme Member
iTrader: (16)
Re: Looking for advice
Originally Posted by Mrbrent86
And I read further up that stock pistons could be a problem? I suppose I should forget the heads for now, and do something about the pistons before I throw on the Turbo? Again I might be getting ahead of myself, I'm just learning and you've been more than helpful. Got a call about officer training this morning (start this summer) and I may be leaving for ranger school in jan (depending on the shoulder) so I wanna get the ball rolling and make up my mind bc I plan on ordering all of these parts at once....
#57
Thread Starter
Junior Member
Joined: Oct 2009
Posts: 28
Likes: 0
Received 0 Likes
on
0 Posts
From: NJ
Car: 82 Z28 Camaro
Engine: 305 5.0L V8 CFI
Transmission: automatic
Re: Looking for advice
So I'll need to purchase a complete TPI setup, I've gotten a few responses about some on this site, and run that TPI sending unit, along with the walbro before bothering with the fuel line as the lengths will be dependent on the TPI system being installed right, also that sending unit should come with the TPI setup right.
#58
Thread Starter
Junior Member
Joined: Oct 2009
Posts: 28
Likes: 0
Received 0 Likes
on
0 Posts
From: NJ
Car: 82 Z28 Camaro
Engine: 305 5.0L V8 CFI
Transmission: automatic
Re: Looking for advice
One of the responses I received on the TPI setup inquired about whether I wanted direct fit "bolt-on" 85-86 style TPI Manifold or centerbolt head 87-up TPI manifold, which do you suggest?
#59
Supreme Member
iTrader: (16)
Re: Looking for advice
Originally Posted by Mrbrent86
So I'll need to purchase a complete TPI setup, I've gotten a few responses about some on this site, and run that TPI sending unit, along with the walbro before bothering with the fuel line as the lengths will be dependent on the TPI system being installed right, also that sending unit should come with the TPI setup right.
#60
Supreme Member
iTrader: (16)
Re: Looking for advice
Originally Posted by Mrbrent86
One of the responses I received on the TPI setup inquired about whether I wanted direct fit "bolt-on" 85-86 style TPI Manifold or centerbolt head 87-up TPI manifold, which do you suggest?
#62
Supreme Member
iTrader: (16)
Re: Looking for advice
Originally Posted by Mrbrent86
Will the 85-86 setup work when I get around to getting new heads?
#63
Thread Starter
Junior Member
Joined: Oct 2009
Posts: 28
Likes: 0
Received 0 Likes
on
0 Posts
From: NJ
Car: 82 Z28 Camaro
Engine: 305 5.0L V8 CFI
Transmission: automatic
Re: Looking for advice
And I won't be able to replace the fuel lines until I install the TPI system being that they will be cut to those specifications right? Just trying to figure out the most I can do right now while I'm waiting for the parts to come in, I'm impatient and I wanna start driving it already haha.
#64
Supreme Member
iTrader: (16)
Re: Looking for advice
Originally Posted by Mrbrent86
And I won't be able to replace the fuel lines until I install the TPI system being that they will be cut to those specifications right? Just trying to figure out the most I can do right now while I'm waiting for the parts to come in, I'm impatient and I wanna start driving it already haha....
#65
Supreme Member
iTrader: (16)
Re: Looking for advice
Also, wanted to point out, another thing you'll want to do until you eventually do go with forged pistons, is use regular head gaskets. Don't get cometics. This way, if something goes wrong, the gasket will blow, and it's only ten to twenty dollars to replace, as opposed to a piston. This is why some turbo guys purposely run cheap head gaskets, it is cheap insurance, because they are guaranteed to "give" first....
#67
Thread Starter
Junior Member
Joined: Oct 2009
Posts: 28
Likes: 0
Received 0 Likes
on
0 Posts
From: NJ
Car: 82 Z28 Camaro
Engine: 305 5.0L V8 CFI
Transmission: automatic
Re: Looking for advice
haha very nice. what an addiction. I guess the megasquirt can go in before everything else. Then I'll just have to do the TPI, fuel lines, pump at the same time. first part of my exhaust then complete it when I add the Turbo. The time frame I'm looking at is starting once I put it on the road, and am done with the tune up I'm doing, beginning of next week hopefully. The fuel lines were just important right now because the garage I had it checked out before purchase said I should change em out, but I guess I have to wait now till the TPI comes.
Thread
Thread Starter
Forum
Replies
Last Post
HoosierinWA
Tech / General Engine
5
10-07-2015 10:15 AM