I have a 88 IROC 5.0 5speed..... with a ported manifold ported runners, and ported slp runners gasket matched great job it has a new hooker 3" cat back and a straight pipe for a cat...... i know ill lose some torque but im gonna get them and the y pipe for $225 and i dont have to pay shipping........ i know ill lose a decent amount of torque from the 305 but i usually keep the engine up around 4k rpms gotta love the 5 speed anyways what are you guys results with SLP 1 3/4 on a 305 with small amounts of mods???

 

a guy on here put them on since he was gonna get a 350 soon. I wish I would have . He loved them on his 305.

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-Tas
'89 Formula WS-6

305, TBI, auto, 14x3 chrome flat based open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips....

To be installed eventually far far far into the future: Yours if the price is right and I don't have to ship :
Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248), Catco 3" cat, and injector spacer.

Super GRK_Taz World
F-Body Dual Exaust
EFI & Intake Options
AOL IM: superGRtaz

 

I have them.

Didn't notice much, if any of a torque loss.
(I had my clutch installed at the same time)

I hardly ever get my RPM's over 3k. Pulls very good at lower RPM's AND pulls better IMO above 3k.

Sounds GREAT.

No plans for a 350 yet, but if/when I do my exhaust system will NOT be an issue.


If you have the money, get em....you won't be disappointed.




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92 Camaro RS, LO3, 5-spd, T-tops

Performance:
K&N Open Air Filter, Edelbrock performer TBI intake, Fastchip Prom, Timing +4 degrees, Centerforce clutch, Xact 8mm wires, SLP 1 3/4" Headers (coated), Flowmaster Catback Exhaust, Z28 Grille w/aftmkt fog lamps, MacEwen white-face guages
Electronics:
Alpine 8030 Alarm System, Valentine One Radar Detector (How did I ever drive without one?), Pioneer DEH 7450 Head Unit w/6-pack CD changer, Pioneer DEQ 7600 Sound Processor, 2 Kenwood KAC-846 Amps powering 2 12" Pro Red subs, 2 Pioneer 6x9 and 2 MTX 4x6 speakers.
NEXT UP: TBI mods, 3.42 gears w/Torsen posi

 

They did wonders on my car. I frequently pull to 5000 RPM, and noticed a huge difference. And i hardly noticed any torque loss, but i did notice what little loss there is. If you're prepared for the fun installation, get them.

Jon

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89 GTA
Beautiful Gunmetal gray, LB9 305 and T5 tranny. Only 60,000 miles!
Dual cats, 3"flomaster
Accel 300+ Ignition, wires, cap, coil, etc
Airfoil
KN Airfilter
Removed Screens on MAF
SLP 1 3/4 headers
No Smog/AIR system

 

yeah, the 1 3/4 slp's on Jon's(82resto) GTA 5 speed made a big difference, and coupled to the flowmaster cat back, makes one of the most beutiful sounds i've ever heard. they weren't too bad to put in, but there were some issues. I should know, I PUT THEM IN! Right Jon??

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'84 Berlinetta, LG4, 700R-4, starwars interior, no major mods yet

 

Did you guys have to change the motor mounts.... what was the biggest issue??