headers on my 89 305 tbi...
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Yes, it would be noticable.
The Hookers I have are 1-5/8" primary, and are fine for a 305. SLP also recommends 1-5/8" primaries for a 305 if you get their parts. If you haven't upgraded your cat-back, that will also help.
As for "incredibly slow", you may have issues that exhaust alone won't cure. But, it'll get you onto the road to recovery.
The Hookers I have are 1-5/8" primary, and are fine for a 305. SLP also recommends 1-5/8" primaries for a 305 if you get their parts. If you haven't upgraded your cat-back, that will also help.
As for "incredibly slow", you may have issues that exhaust alone won't cure. But, it'll get you onto the road to recovery.
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Wait, I saw "TPI" when you said "TBI".
It'll still help, but get a 3" cat and cat-back while you're at it.
The "incredibly slow" part needs specialized TBI help. Go to that forum, where the specialists for your condition reside.
It'll still help, but get a 3" cat and cat-back while you're at it.
The "incredibly slow" part needs specialized TBI help. Go to that forum, where the specialists for your condition reside.
Supreme Member
Joined: Apr 2000
Posts: 1,338
Likes: 0
From: Chander, Arizona USA
Car: 2006 Silverado 1500
Engine: 5.3L
Transmission: 4L60E
since your running a tbi, my opinion would be to go with the edelbrock tes. they are stepped and will flow plenty for the low rpm 305 you have. there are alot of tbi guys on this board that may have another opinion of stuff they've tried, so hopefully they'll reply too.
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