Hi all-
I went to my local junkyard a couple months ago and pulled a series 2 3800SC from an '03 Regal. Now, a buddy of mine is constantly ragging on Fieros, and I want to shut him up for good- (and also, everyone loves lots of power in a small car) So I've set out on a mission to make 600HP from my engine. I found this article to use as a base for my build. Have any of you built an engine similar to this/have any tips and tricks?


so far:

Stattama Turbo cam #5
Duration @.050' is 230/224
Lift is .544"/536" with 1.6 Rockers
Lobe separation is 117 degrees - $519

Requires: 150# valve springs, modified retainers-? Comp Camps OER or LS7 Lifters, Rollmaster double timing chain, machine oil pump cover, PCM tuning

PAC Valve Springs- 150#- $219

ZZP 3800 Performance lifter trays- $189.99

ZZP Hydraulic Roller Lifters- 3800- $109.99

Rollmaster double timing chain- $135.99

ZZP performance 4340 H beamn 3800 connection rods- support 1000hp- $599

ARP 3800 Head studs- $99

Oil pump kit- $114

Z3 Turbokit- (still need intercooler) $2,439

Siemens Deka 60# Injectors- E85- $317

[This message has been edited by Lewie (edited 09-19-2024).]

And the transmission will be what?
That's the hurdle with any engine swap. not the engine power.

I read the article but I'm confused by the "N/A" dyno of 267/247 when what's pictured is a SC motor.

I have a Series 3 N/A motor I've been meaning to rebuild as a replacement for my now dead 4.9...

I was looking for some basic upgrades for that but I seems hard to come by as everyone just goes the S/C or turbo route.
I've found this but it seems Series 2 oriented: https://zzperformance.com/b...aspirated-top-5-mods

I'd love to have a N/A 3800 that makes more hp than my 4.9 did while only giving up 50 ft*lbs at most.
For reference, my 4.9 made 196 rwhp and 298 ft*lbs on E85. I believe it could have made 5-10 more but my tuner tends to tune rich by my standards.

Best of luck on your build!

quote Originally posted by Lewie: Stattama Turbo cam #5 Duration @.050' is 230/224 Lift is .544"/536" with 1.6 Rockers Lobe separation is 117 degrees - $519 Requires: 150# valve springs, modified retainers-? Comp Camps OER or LS7 Lifters, Rollmaster double timing chain, machine oil pump cover, PCM tuning PAC Valve Springs- 150#- $219 ZZP 3800 Performance lifter trays- $189.99 ZZP Hydraulic Roller Lifters- 3800- $109.99 Rollmaster double timing chain- $135.99 ZZP performance 4340 H beamn 3800 connection rods- support 1000hp- $599 ARP 3800 Head studs- $99 Oil pump kit- $114 Z3 Turbokit- (still need intercooler) $2,439 Siemens Deka 60# Injectors- E85- $317 - these seem overly small. In your linked example they used 1500 cc or 143 lb/hr injectors

The 3800 SC engine is quite strong in stock form and would swap cams and turbo it and use the $$$ saved on transmission work.

If I was an automatic guy and looking to build a stout 3800 Turbo, I would follow this thread:
https://www.fiero.nl/forum/Forum2/HTML/145844.html

A guy ragging on a 3800 Fiero? Point him to this video where Scott ran a 9.87 1/4 mile at 142mph with his 3800. That guy has nerves of steel.
Ultra Fast Fiero

If that is your target it will be a hard one to beat.
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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

[This message has been edited by Dennis LaGrua (edited 09-19-2024).]

I run a 400HP+ 3800 turbo setup running through a 5-speed Getrag (Yes. Getrag. You heard right. It hasn't blown yet!)
I eat Porsches and hi-power BMWs for breakfast!
Never had a Skyline line up against me. Maybe they're scared?

Ask away, I'll try to answer.

One thing I'd suggest is to reinforce the front cross member of the cradle. I cracked mine.

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"Turbo Slug" - '87 Fiero GT. 3800 turbo. - The fastest Fiero in France! @turboslugfiero
https://youtu.be/hUzOAeyWLfM

[This message has been edited by Frenchrafe (edited 09-20-2024).]

quote Originally posted by Frenchrafe: I run a 400HP+ 3800 turbo setup running through a 5-speed Getrag (Yes. Getrag. You heard right. It hasn't blown yet!)

That's because you know how to drive with that transmission

👍😄

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"Turbo Slug" - '87 Fiero GT. 3800 turbo. - The fastest Fiero in France! @turboslugfiero
https://youtu.be/hUzOAeyWLfM

What are you considering for the transmission?

quote Originally posted by Frenchrafe: I run a 400HP+ 3800 turbo setup running through a 5-speed Getrag (Yes. Getrag. You heard right. It hasn't blown yet!) I eat Porsches and hi-power BMWs for breakfast! Never had a Skyline line up against me. Maybe they're scared? Ask away, I'll try to answer. One thing I'd suggest is to reinforce the front cross member of the cradle. I cracked mine.

This is what I'm going for- There is a guy in my hometown with an LS swapped Fiero, he has a 6 speed manual- I'm trying to track him down and figure out how he did it. Manual is a must. 600HP is the ultimate goal, but really anything other than the stock 75 would be great. More realistically, I want to hit 400- I'll dm you

The F40 variant used in the G6 Pontiac has the standard GM FWD bellhousing pattern, as does the 3800 V6 engine.

Axles and intermediate shaft are the hard to find pieces.