305,ZZ4 Heads etc
Thread Starter
Senior Member
Joined: Feb 2001
Posts: 536
Likes: 1
From: united kingdom
Car: Transam
Engine: ZZ4,Holley Stealth Ram,Commander 950
Transmission: T56
305,ZZ4 Heads etc
Ive been getting good advice on my pending swap from you guys,but please help with a few other questions.I was going to fit a ZZ4 with Holley Stealth Ram(complete set up)in place of my 305tpi
However instead I decided to spend the money on a T56 conversion.Ive now got all these parts ready.
I have now decided to take the engine out at the same time and clean up the engine bay and tidy up the engine too.
What I thought though is, as my 305 has Dart II Sportsman Jr heads on it which have 1.94" and 1.5"valves 58cc chambers and 171cc volume,could i use a ZZ4 short engine and put on my heads and tpi just for another year or so while i save up enough money to buy the Holley Stealth Ram kit.Will my 1985 tpi set up be good enough to run this combination?Ive got a AFPR on it too.
Sorry its such a long question but im sure a couple of you guys will know the answer
Thanks again
PM
However instead I decided to spend the money on a T56 conversion.Ive now got all these parts ready.
I have now decided to take the engine out at the same time and clean up the engine bay and tidy up the engine too.
What I thought though is, as my 305 has Dart II Sportsman Jr heads on it which have 1.94" and 1.5"valves 58cc chambers and 171cc volume,could i use a ZZ4 short engine and put on my heads and tpi just for another year or so while i save up enough money to buy the Holley Stealth Ram kit.Will my 1985 tpi set up be good enough to run this combination?Ive got a AFPR on it too.
Sorry its such a long question but im sure a couple of you guys will know the answer
Thanks again
PM
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
If anyone has info on those heads, I'd be interested in some learnin'...
Senior Member
Joined: Aug 2001
Posts: 610
Likes: 0
From: fredericksburg, va
Car: 85 ta ws6 KITT
Engine: Lb9
Transmission: th350
let me know how that works out for you. i thought about a hsr for my 85 305 w/ 8113 heads +hooker 2460s, but i don't want to spin past 6k, so i'm planning on a lt1 intake.
i'd love to see some dyno results from a 305 hsr combo
i'd love to see some dyno results from a 305 hsr combo
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