Search found 6856 matches
- Sun Mar 26, 2023 7:27 pm
- Forum: Pontiac Fiero Discussion (General Non-Technical)
- Topic: progress on the banshee...
- Replies: 1259
- Views: 366628
Re: progress on the banshee...
I can't see Ben keeping cams in stock. The overhead would be thousands for him to do that, and he doesn't have that kind of money. All the cams he provides are essentially custom cams. He has to call comp and give them grind numbers. If you call comp directly they can make that same cam without Ben'...
- Tue Mar 21, 2023 8:25 am
- Forum: Technical Conversations on Pontiac Fieros
- Topic: LZ4 3500 rod info and forged Pistons options.
- Replies: 34
- Views: 4015
Re: LZ4 3500 rod info and forged Pistons options.
Kinda curious what the lz4 rods can handle power wise. I checked some calcs and the 3.9 at 6500 rpm has a piston speed of 59.76 fps. The 3.5 at 6500 has a piston speed of 54 fps or about 10% less. I'd imagine the stresses on the 3.5 rod would be much less. However I imagine that since the lz4 rods i...
- Mon Mar 20, 2023 8:53 pm
- Forum: Technical Conversations on Pontiac Fieros
- Topic: LZ4 3500 rod info and forged Pistons options.
- Replies: 34
- Views: 4015
Re: LZ4 3500 rod info and forged Pistons options.
Jumping right in. Just gonna hook everything back up as before
- Mon Mar 20, 2023 6:35 pm
- Forum: Technical Conversations on Pontiac Fieros
- Topic: LZ4 3500 rod info and forged Pistons options.
- Replies: 34
- Views: 4015
Re: LZ4 3500 rod info and forged Pistons options.
I put a set of my LZ cam bearing spacers and new bearings in this 3500 and I think I am going to give it a rip. See what a cammed lz4 will make power wise.
And hopefully make power all the way to 6500 vs falling around 5600 as before.
And hopefully make power all the way to 6500 vs falling around 5600 as before.
- Sat Mar 04, 2023 10:15 am
- Forum: Pontiac Fiero Discussion (General Non-Technical)
- Topic: Pauter rods for 3900 engine???
- Replies: 21
- Views: 2941
Re: Pauter rods for 3900 engine???
Yes steal. 4340 I think. They make Ti rods too but I'm not doing that
- Fri Mar 03, 2023 12:41 pm
- Forum: Technical Conversations on Pontiac Fieros
- Topic: NA 3900 Build
- Replies: 112
- Views: 29799
- Thu Mar 02, 2023 7:48 pm
- Forum: Pontiac Fiero Discussion (General Non-Technical)
- Topic: Pauter rods for 3900 engine???
- Replies: 21
- Views: 2941
Re: Pauter rods for 3900 engine???
$1710 plus shipping with about a 10 week lead time. There are a few details I need to finalize with Pauter first before I order but I think this is the way I have to go if I want to make reliable power over 500 whp
- Wed Mar 01, 2023 9:04 pm
- Forum: Technical Conversations on Pontiac Fieros
- Topic: LZ4 3500 V6 Swap
- Replies: 40
- Views: 5700
Re: LZ4 3500 V6 Swap
Yea I think that will point right towards the axle though. It might clear pending how tight a bend you need or can get away with.
Just something to keep an eye out for. 72 new is dirt cheap though. Wow.
Just something to keep an eye out for. 72 new is dirt cheap though. Wow.
- Tue Feb 28, 2023 6:40 pm
- Forum: Technical Conversations on Pontiac Fieros
- Topic: LZ4 3500 V6 Swap
- Replies: 40
- Views: 5700
Re: LZ4 3500 V6 Swap
Then do something similar to the 3800 guys. C__Data_Users_DefApps_AppData_INTERNETEXPLORER_Temp_Saved Images_PICT0031.jpg I also remember making a video. I don't think the trunk would have to be cut to fit the piping. I was talking about using a turbo here which would require trunk cutting. So this ...
- Tue Feb 28, 2023 6:31 pm
- Forum: Technical Conversations on Pontiac Fieros
- Topic: LZ4 3500 V6 Swap
- Replies: 40
- Views: 5700
Re: LZ4 3500 V6 Swap
I t. https://www.ebay.com/itm/155378021375?chn=ps&mkevt=1&mkcid=28 So maybe keep the stock firewall side, use something like this for trunk side, merge them under the trunk. Crossover then can maybe be wiggled enough to clear the clutch arm, as it won't be tied to the trunk exhaust manifold...
- Mon Feb 27, 2023 9:30 pm
- Forum: Technical Conversations on Pontiac Fieros
- Topic: NA 3900 Build
- Replies: 112
- Views: 29799
Re: NA 3900 Build
You might disagree but I think the firewall side manifold is designed pretty good. I'd keep that, and the crossover, and build a new trunk side manifold mating into the crossover somehow. The trunk side manifold narrows down to a 1.8 inch hole for all 6 cylinders. It's very restrictive. So if it wer...
- Fri Feb 24, 2023 11:41 am
- Forum: Technical Conversations on Pontiac Fieros
- Topic: NA 3900 Build
- Replies: 112
- Views: 29799
- Fri Feb 24, 2023 11:28 am
- Forum: Technical Conversations on Pontiac Fieros
- Topic: NA 3900 Build
- Replies: 112
- Views: 29799
- Fri Feb 24, 2023 11:24 am
- Forum: Technical Conversations on Pontiac Fieros
- Topic: NA 3900 Build
- Replies: 112
- Views: 29799
Re: NA 3900 Build
You can turn your fuel rail around so the inlet is on the battery side. That's what I did
- Thu Feb 23, 2023 7:36 pm
- Forum: For Sale
- Topic: For Sale Lz4/9 Cam bearing spacers
- Replies: 3
- Views: 8264
Re: For Sale Lz4/9 Cam bearing spacers
More of these swaps are popping up and I still have a set of anyone is interested
- Tue Feb 21, 2023 9:48 am
- Forum: Technical Conversations on Pontiac Fieros
- Topic: Engine Technology Thread; starting with dimpled pistons
- Replies: 14
- Views: 2001
Re: Engine Technology Thread; starting with dimpled pistons
Having both would be better
- Mon Feb 20, 2023 7:40 pm
- Forum: For Sale
- Topic: Looking for bow tie aluminum block
- Replies: 1
- Views: 784
Looking for bow tie aluminum block
The 60 degree one of course.
I sold mine years ago. Not sure if it ever got used. I know they don't come around often. I might be interested in acquiring another one pending price and condition.
Thx.
Gm part number 10051141
I sold mine years ago. Not sure if it ever got used. I know they don't come around often. I might be interested in acquiring another one pending price and condition.
Thx.
Gm part number 10051141
- Sun Feb 19, 2023 7:54 pm
- Forum: Technical Conversations on Pontiac Fieros
- Topic: Engine Technology Thread; starting with dimpled pistons
- Replies: 14
- Views: 2001
Re: Engine Technology Thread; starting with dimpled pistons
Eric weingartner on YouTube did the dimple test on an LS head.
Without a flowbench you have no idea if it helps.
Without a flowbench you have no idea if it helps.
- Sat Feb 18, 2023 1:16 pm
- Forum: Fiero Maintenance
- Topic: Pics of my broken 3900 lz9
- Replies: 10
- Views: 1950
Re: Pics of my broken 3900 lz9
He turned down his crank to use the 2 inch rod journals.
The lengths for the rod need to be around 5.830 or 6.030 or you have to use custom pistons
The lengths for the rod need to be around 5.830 or 6.030 or you have to use custom pistons
- Thu Feb 16, 2023 11:32 pm
- Forum: Fiero Maintenance
- Topic: Pics of my broken 3900 lz9
- Replies: 10
- Views: 1950
Re: Pics of my broken 3900 lz9
In a vvt you would need custom pistons as those rods from summit will be too long for the 3.9 crank, or too short for the 3.5 crank.