Engine Swap Everything about swapping an engine into your Third Gen.....be it V6, V8, LTX/LSX, crate engine, etc. Pictures, questions, answers, and work logs.

What engine?

Old Feb 27, 2007 | 05:22 PM
  #1  
VenomX-87's Avatar
Thread Starter
Senior Member
 
Joined: Nov 2006
Posts: 651
Likes: 0
From: Adelaide, Australia.
Car: 1984 Trans-Am WS6
Engine: WAS: 5.0HO, SOON: ZZ383-425HP.
Transmission: 700R4 with shift kit
What engine?

Ok i have the 305-H.O a 327-Worked (in like 100 parts in 5 boxes) and looking at getting a 330HP 350 crate engine.
Now the 305-H.O is breathing so it needs rings, might as well rebuild it if im doing that so prob around $1,500AUD + mods.
The 327 needs a full gasket set and new heads but was in very good shape when it got torn down (duno why) but it is going to cost around $2,000AUD + extras.
The Crate 350 all it needs is carb, distribuitor and boltons that i allready got and that is $3,300
The thing that is getting me is i want to work on the 305 and keep the car with the original engine BUT if i do what i want to do to it i will have forked out around $3,500AUD+ and by that time i could have a nice NEW 350 that could kill the warm 305.
Then there is the 327, It was a strong engine it was puttin out 300HP+ in the car it was in before i got it BUT it has been sitting in the boxes for around 5 years+ and it has been shifted through 4 sheads so i don't know what little things have been lost over thoes moves but i know it need heads, I/Manifold, Carb, Dis, all boltons and gaskets.
I have been asking about my options about working the 305 also a have chatted to people here about the 327 and my options with that but i have been looking around and getting prices and it all workes out around the same.
I would like to hear what people here think, what engine should i go for?
Mild 305. (230HP?)
Mild/Warm327. (300+)
Stock 350-H.O W/vortec heads (330HP)
http://www.eagleautoparts.com.au/12486041.htm

EDIT: I know i need new headers (getting them when i swap the engines over).

Last edited by VenomX-87; Feb 27, 2007 at 05:33 PM.
Reply
Old Feb 27, 2007 | 05:37 PM
  #2  
joecautela's Avatar
Member
iTrader: (1)
 
Joined: Jan 2007
Posts: 125
Likes: 0
I wiuld go with the 350. The 330hp setup is the same as the old '69's used to be. The 327 done right with good heads and cam is a screamer in it's own right. The 305 is a destroked and detuned 327 and back when it came on the scene we all considered it a piece of junk. You don't really say how you're gonna use it, everyday driver and occasional hard runs? I'd go with the 350. More potential power, flexible power band depending on setup and if built right is damn near bullet proof...just my opinion, Joe
Reply
Old Feb 27, 2007 | 05:52 PM
  #3  
1320_Guy's Avatar
Supreme Member
iTrader: (3)
 
Joined: Apr 2005
Posts: 1,147
Likes: 0
From: Baton Rouge, LA
Car: 89 RS
Engine: 305
Transmission: th350
The 305 is not a destroked 327, it has the same stroke as a 350 just smaller bore. You can make 350hp with the 305, if you have 416 heads you could probly get there with a cam swap and good tuneing. Also when you rering it you could use a smaller head gasket to bump the compression up.
Reply
Old Feb 27, 2007 | 05:54 PM
  #4  
VenomX-87's Avatar
Thread Starter
Senior Member
 
Joined: Nov 2006
Posts: 651
Likes: 0
From: Adelaide, Australia.
Car: 1984 Trans-Am WS6
Engine: WAS: 5.0HO, SOON: ZZ383-425HP.
Transmission: 700R4 with shift kit
It will be a weekend cruising car but i want to be able to beat the local V8s (around 200-250kw) off the lights and it has to sound good.
I know the 327 had a killer sound but last time i heard the motor it had a custom high flow 3" dual s/steel exhaust behind it and i can't afford that.

My 305 has 416 heads.

Last edited by VenomX-87; Feb 27, 2007 at 09:57 PM.
Reply
Old Feb 27, 2007 | 06:19 PM
  #5  
1320_Guy's Avatar
Supreme Member
iTrader: (3)
 
Joined: Apr 2005
Posts: 1,147
Likes: 0
From: Baton Rouge, LA
Car: 89 RS
Engine: 305
Transmission: th350
My old 305 was complety stock when i got it. Put a comp 224/230 XE cam, a junk spare holley contender intake, headman longtubes, and a 650 double pumper. It ended up throwing a bearing b4 i got it to the track but i did beat my friends low 14 sec camaro. Had a decent lopey idle with duel 2.5 exaust and glaspacs that dump b4 the rearend.
Reply
Old Feb 27, 2007 | 08:56 PM
  #6  
VenomX-87's Avatar
Thread Starter
Senior Member
 
Joined: Nov 2006
Posts: 651
Likes: 0
From: Adelaide, Australia.
Car: 1984 Trans-Am WS6
Engine: WAS: 5.0HO, SOON: ZZ383-425HP.
Transmission: 700R4 with shift kit
1 thing I should add i want to make it atleast 15MPG no less than that i can't afford to pay $100 just to take it around the block.
I don't want to put a stall converter in there if i don't have to.

Ok one of the main reason for not rebuilding the 305 is that it has had a real hard life the last owner of the car said it use to overheat atleast once a week he said "id get it home it was in the red and the engine was pinging but it allwase started the next day so there was never a problem" i almost called him a F***H**D no one should treat a car like that. I think that is the reason it breathes so mutch (but it dose not smoke).

Last edited by VenomX-87; Feb 28, 2007 at 03:06 AM.
Reply
Old Feb 28, 2007 | 04:12 PM
  #7  
VenomX-87's Avatar
Thread Starter
Senior Member
 
Joined: Nov 2006
Posts: 651
Likes: 0
From: Adelaide, Australia.
Car: 1984 Trans-Am WS6
Engine: WAS: 5.0HO, SOON: ZZ383-425HP.
Transmission: 700R4 with shift kit
just an update the 327 WAS 378HP @ 6,000RPM Flywheel befor it was torn down but that was with the ported heads, if i put a normal set heads on it that would drop down to what the 350s HP is but less power down low so it would need a stall converter.
Reply
Old Feb 28, 2007 | 04:40 PM
  #8  
89RsPower!'s Avatar
Supreme Member
 
Joined: Apr 2002
Posts: 3,552
Likes: 5
From: New Jersey
Car: 86 Corvette, 89 IROC, 1999 TA
Engine: 350, 350, LS1
Transmission: 700r4, 700r4, T-56
Axle/Gears: 3.07, 373, 4.10
Easy choice, 350. 327's were good in their day but normally had high comp ratios and used leaded gas to make power.. but when it comes down to it building a 327 or a 350 is an easy choice, they share the same bore but the 350 has a longer stroke thus more cubes and more power making potential.. the answer is quite simple.
----------
last post doesn't give much info.. it was 378 at the flywheel with some kind of heads that were ported.. there are quite a few different heads on the market.. just slapping a set of heads on it could make it a 150 hp engine if ya slap the wrong set on... you need a tad more info like the cam specs, what pistons are in it, is it stock deck height, what was the compression ratio with those heads? What would the compression ratio be with the heads you're puttin on it? Etc......

Last edited by 89RsPower!; Feb 28, 2007 at 04:45 PM. Reason: Automerged Doublepost
Reply
Old Feb 28, 2007 | 06:21 PM
  #9  
VenomX-87's Avatar
Thread Starter
Senior Member
 
Joined: Nov 2006
Posts: 651
Likes: 0
From: Adelaide, Australia.
Car: 1984 Trans-Am WS6
Engine: WAS: 5.0HO, SOON: ZZ383-425HP.
Transmission: 700R4 with shift kit
i tryed to get the stats on the cam but no one knew what it was, i don't know what heads are on it because the engine is at my dads place and that is about an houre drive from where i live.
I think i will just go with the 350, the 327 is nice but it i don't think it is rite for what i want.
One other thing what intakes are made fot the Vortec heads?
if im going to get the 350 can i mod the current intake for a while until i get a intake made for the vortec heads.

Sorry if my posts are all over the place, i have so many thoughts and idears that i want to do to this car and i just want to find out from people here what would be the best one. Thanks for the help so far.

If and once i can afford it i will get the crate 350 and start working on my setup, i will get all info on what i am going to do all the parts and P/Numbers THEN i will post back and see if anyone can give me any tips or tell me if there are better parts than what i have listed.

Thanks again.
Reply
Old Feb 28, 2007 | 09:02 PM
  #10  
VenomX-87's Avatar
Thread Starter
Senior Member
 
Joined: Nov 2006
Posts: 651
Likes: 0
From: Adelaide, Australia.
Car: 1984 Trans-Am WS6
Engine: WAS: 5.0HO, SOON: ZZ383-425HP.
Transmission: 700R4 with shift kit
Ok how dose this sound:

Engine: Part No. 12496968
350 Crate Engine 330HP
Deluxe HO with Iron Vortec Heads.
http://www.eagleautoparts.com.au/12496968.htm

Trans: 700R4. (on car atm)

Diff: 3.73 gears. (on car atm)

Carb: Holley 600. (on car atm, will be rejeted)

Headers: 82-92F Block Hugger.
2 1/2 in. collector tubes, 1 1/2 in. primaries, clean welds, and 3/16 in. flanges.
https://ssl.shoalhaven.net.au/usgmse...4d2a59415dfcda
(RHD CAR, NO AFTERMARKET HEADERS OTHER THAN THIS KIT WILL FIT).

How dos it sound so far, anything I missed?
Reply
Old Mar 1, 2007 | 05:33 AM
  #11  
JamesC's Avatar
Moderator
25 Year Member
Liked
Loved
iTrader: (5)
 
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Originally Posted by VenomX-87
1 thing I should add i want to make it atleast 15MPG
FYI. My 350 HO Deluxe gets 18 highway. You wouldn't be disappointed with this motor. It's a beast compared to my old LG4, which was modded: cam, intake, carb tweaks, full L69 exhaust from manifolds back.

By the way, the HO Deluxe comes with a Holley 600 with vac secondaries.

JamesC
Reply
Old Mar 1, 2007 | 02:31 PM
  #12  
five7kid's Avatar
Moderator
25 Year Member
iTrader: (14)
 
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
Originally Posted by VenomX-87
One other thing what intakes are made fot the Vortec heads?
Performer, Performer Spreadbore, Performer RPM (and Air Gap versions of the squarebore Performer manifolds), Action +, Victor Jr. Edelbrock, Weiand, GM Performance Parts, Summit for brands.
if im going to get the 350 can i mod the current intake for a while until i get a intake made for the vortec heads.
Maybe, but highly discouraged. Unless you have access to welding, porting, drilling, and facing equipment, it's going to cost you more than a proper manifold would cost.

The Performer (spreadbore) or Action + would be best to support you MPG goals. RPM would make slightly more higher RPM power.
Reply
Old Mar 1, 2007 | 02:44 PM
  #13  
VenomX-87's Avatar
Thread Starter
Senior Member
 
Joined: Nov 2006
Posts: 651
Likes: 0
From: Adelaide, Australia.
Car: 1984 Trans-Am WS6
Engine: WAS: 5.0HO, SOON: ZZ383-425HP.
Transmission: 700R4 with shift kit
thanks for helping me with my orignal question, but i was going to get the bare long block before now im getting the deluxe it has the intake + 600 Holley as stated above by James C.

This engine package has carburetor (holley 600), distributor, water pump, torsional damper, and 12.75in 153 tooth automatic trans flexplate.

Last edited by VenomX-87; Mar 1, 2007 at 02:50 PM.
Reply
Old Mar 1, 2007 | 02:54 PM
  #14  
five7kid's Avatar
Moderator
25 Year Member
iTrader: (14)
 
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
The Deluxe comes with the GM Performance squarebore intake, which is the same thing as the Edelbrock Performer squarebore intake.

Too bad they put a small vacuum secondary carb on that engine.

If the picture of the headers is accurate, those aren't what are called "block huggers" in the U.S. They're shorty headers, which is fine. "Block huggers" have problems with the engine mounts (as has been discussed elsewhere).

That combo should accomplish your power and economy goals. Pretty good torque, power will fall off sharply at 5000 RPMs.
Reply
Old Mar 1, 2007 | 03:08 PM
  #15  
VenomX-87's Avatar
Thread Starter
Senior Member
 
Joined: Nov 2006
Posts: 651
Likes: 0
From: Adelaide, Australia.
Car: 1984 Trans-Am WS6
Engine: WAS: 5.0HO, SOON: ZZ383-425HP.
Transmission: 700R4 with shift kit
thats cool i never push any of my cars past 4,500RPM
since i had my T.A i have never pushed it past 4,000RPM maily coz that it looses power at 3,900RPM, i think it is my current carb.

I will be getting a custom Y pipe made up for it by the guys who did my cat back exhaust, plus they have a Two year waranty for mild steel components and Ten years for stainless components.

Last edited by VenomX-87; Mar 1, 2007 at 03:19 PM.
Reply
Old Mar 1, 2007 | 03:35 PM
  #16  
JamesC's Avatar
Moderator
25 Year Member
Liked
Loved
iTrader: (5)
 
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Originally Posted by five7kid
Too bad they put a small vacuum secondary carb on that engine.
My thought too. I've been considering a Holley 650DP.

JamesC

Last edited by JamesC; Mar 1, 2007 at 04:07 PM.
Reply
Old Mar 1, 2007 | 04:04 PM
  #17  
VenomX-87's Avatar
Thread Starter
Senior Member
 
Joined: Nov 2006
Posts: 651
Likes: 0
From: Adelaide, Australia.
Car: 1984 Trans-Am WS6
Engine: WAS: 5.0HO, SOON: ZZ383-425HP.
Transmission: 700R4 with shift kit
1 question, how mutch did you pay for youre 350 H.O Deluxe?
Because i sent an e-mail yesterday to get a price for one over here and it was $3950 (long with intake) and $5300 for complete (Deluxe) and that is a little steap.
im thinking of getting the long with intake and just use everything off my motor.
so:
Long block W/Intake, = $3,950 + $300 Shiping.
Current Holley (rejeted and rebuilt), = $200.
current flexplate, = $ 0.
current distributor, = $0.
current boltons, = $0.
Shorty Headers & custom Y-pipe. = $590.
All that adds up to $5,040 thats with the exhaust.

Last edited by VenomX-87; Mar 1, 2007 at 04:28 PM.
Reply
Old Mar 1, 2007 | 04:53 PM
  #18  
five7kid's Avatar
Moderator
25 Year Member
iTrader: (14)
 
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
Who's type of dollars?

http://www.sdparts.com/catalog/crate...V8Engines.aspx

Whoa, they just changed their website! I was on there an hour ago, and it was the old style. Weird.

$2500 & $3700, respectively, plus shipping down under.
Reply
Old Mar 1, 2007 | 04:58 PM
  #19  
VenomX-87's Avatar
Thread Starter
Senior Member
 
Joined: Nov 2006
Posts: 651
Likes: 0
From: Adelaide, Australia.
Car: 1984 Trans-Am WS6
Engine: WAS: 5.0HO, SOON: ZZ383-425HP.
Transmission: 700R4 with shift kit
that is AUD so $3950_AUD = $3111.18_USD
Reply
Old Mar 1, 2007 | 05:01 PM
  #20  
five7kid's Avatar
Moderator
25 Year Member
iTrader: (14)
 
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 that's in-country, then it's probably close enough.
Reply
Old Mar 1, 2007 | 06:21 PM
  #21  
VenomX-87's Avatar
Thread Starter
Senior Member
 
Joined: Nov 2006
Posts: 651
Likes: 0
From: Adelaide, Australia.
Car: 1984 Trans-Am WS6
Engine: WAS: 5.0HO, SOON: ZZ383-425HP.
Transmission: 700R4 with shift kit
yep $3950_AUD in Melbourne plus $300_AUD shiping to Adelaide.
so $4250_AUD.
Reply
Old Mar 1, 2007 | 06:34 PM
  #22  
JamesC's Avatar
Moderator
25 Year Member
Liked
Loved
iTrader: (5)
 
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Originally Posted by VenomX-87
1 question, how mutch did you pay for youre 350 H.O Deluxe?
$3495.99 plus $149 shipping (5/19/05).

JamesC
Reply
Old Mar 4, 2007 | 04:00 PM
  #23  
VenomX-87's Avatar
Thread Starter
Senior Member
 
Joined: Nov 2006
Posts: 651
Likes: 0
From: Adelaide, Australia.
Car: 1984 Trans-Am WS6
Engine: WAS: 5.0HO, SOON: ZZ383-425HP.
Transmission: 700R4 with shift kit
got a question since im going to be getting a 350 Crate engine my dad wants to use the 327 in his ute, my question is with a mild port job and larger valves will the 416 heads work well?

the 327s power band is 1,500 to 6,000RPM, 378HP @ 6,000RPM Flywheel on the dyno. BUT these were before it was torn down and with the old heads.

The MAIN reason im not going to use it is that it needs a Stall converter of atleast 2500 and it needs to be put back togeather (my dad has loads of spare time to work on it so he dose not care, he just wants the 2.4L 4 out of his ute),
pluss the 350 has the low down power and that is what i want.

1 more thing if i got the Holley 600 re-jeted to run on a 350 would that be to mutch for it on my 305 untill i upgrade the engine, because i have the cash to do the carb now and was wondering if it would hurt to do it?
wouldent it just give the 305 a little more *****.

Last edited by VenomX-87; Mar 4, 2007 at 04:07 PM.
Reply
Old Mar 4, 2007 | 04:26 PM
  #24  
5678TA's Avatar
Supreme Member
 
Joined: May 2006
Posts: 1,857
Likes: 0
From: Maui, Hawaii
Car: 1984 Trans Am
Engine: broken 385sbc
Transmission: G-Force rebuilt T-5
Axle/Gears: Currie 9" Ford 4.30:1
rebuild the 305!! you should ask mw66nova.. he is the guy that built the low 12 sec 305.. low budjet too..
Reply
Old Mar 4, 2007 | 04:36 PM
  #25  
VenomX-87's Avatar
Thread Starter
Senior Member
 
Joined: Nov 2006
Posts: 651
Likes: 0
From: Adelaide, Australia.
Car: 1984 Trans-Am WS6
Engine: WAS: 5.0HO, SOON: ZZ383-425HP.
Transmission: 700R4 with shift kit
But i want it for street use, a 12 second 305 would be wicked but be about as thursty as a big block if not worse.
Some one i know has a 307 in a torana (70's aussie Sports car) that dose low 11's easy but at 7MPG on 98 pump and 5MPG on meth it is not good for street use
Reply
Old Mar 4, 2007 | 05:12 PM
  #26  
5678TA's Avatar
Supreme Member
 
Joined: May 2006
Posts: 1,857
Likes: 0
From: Maui, Hawaii
Car: 1984 Trans Am
Engine: broken 385sbc
Transmission: G-Force rebuilt T-5
Axle/Gears: Currie 9" Ford 4.30:1
like i said, ask mw66nova.. he can tell you everything.. if anything, you dont have to go all the way to 12's.. 13's are respectable.. when i had my first 383, i had a 650 AVS carb on it and i had 10-11mpg.. had 10.76:1 compression as well..
Reply
Old Mar 5, 2007 | 07:34 PM
  #27  
1320_Guy's Avatar
Supreme Member
iTrader: (3)
 
Joined: Apr 2005
Posts: 1,147
Likes: 0
From: Baton Rouge, LA
Car: 89 RS
Engine: 305
Transmission: th350
If i remember right he is getting 15+ mpg with his 305 also.
Reply
Old Mar 5, 2007 | 08:42 PM
  #28  
VenomX-87's Avatar
Thread Starter
Senior Member
 
Joined: Nov 2006
Posts: 651
Likes: 0
From: Adelaide, Australia.
Car: 1984 Trans-Am WS6
Engine: WAS: 5.0HO, SOON: ZZ383-425HP.
Transmission: 700R4 with shift kit
yeah but the 305 in australia is like in 1 car in every 30,000+
because they are only brought over as a stock engine in the T.A or Camaro, they don't sell any performance parts for a 305 only 307, 327, 350 and big blocks. 305 was skiped over here because Holden brought out a 304ci that is a completly different engine. So unless the upgrades used are interchangeable with thoes engines stated above it won't be possible without a large shiping charge.
Reply
Old Mar 12, 2007 | 06:18 PM
  #29  
mw66nova's Avatar
Supreme Member
20 Year Member
iTrader: (13)
 
Joined: Jun 2002
Posts: 13,576
Likes: 30
From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
car clicks off 12mpg in town and 22+ on the highway with the converter locked up
Reply
Old Mar 13, 2007 | 07:22 PM
  #30  
1320_Guy's Avatar
Supreme Member
iTrader: (3)
 
Joined: Apr 2005
Posts: 1,147
Likes: 0
From: Baton Rouge, LA
Car: 89 RS
Engine: 305
Transmission: th350
Basicly the only parts that dont enterchange between a 305 and 350 is the pistons and the block.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
84z96L31vortec
Tech / General Engine
7
Aug 20, 2017 12:16 AM
Spyder_TheGamer
Tech / General Engine
1
Dec 25, 2015 05:07 PM
Reddeath210
Firebirds for Sale
14
Oct 6, 2015 08:20 AM
bradleydeanuhl
DFI and ECM
4
Aug 12, 2015 11:48 AM


Thread Tools
Search this Thread

All times are GMT -5. The time now is 08:50 PM.