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Old 07-05-2008, 06:34 PM   #1
dKillaCamaro
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stock 305 equipment on 350

goin to just swop the block and heads and put it back togeather with all stock intake cc carb dist and all (with headers)
350block 350heads
anyone ever done this or have any info on how it will run
any advice would be great
Thanx

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Old 07-05-2008, 11:54 PM   #2
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Re: stock 305 equipment on 350

anyone anything
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Old 07-06-2008, 12:44 AM   #3
Apeiron
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Car: 1984 Z28 Hardtop / 1988 IROC T-top
Engine: 383 Carb / 305 TPI
Transmission: 4L60 / T-5
Axle/Gears: 3.54 Dana 44 / 3.08 10 bolt

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Re: stock 305 equipment on 350

It'll run just fine. Keep the 305 heads though. "350 heads" could be just about anything.
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Old 07-06-2008, 02:51 AM   #4
five7kid
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Car: 82 Berlinetta(2)/57 Bel Air
Engine: 86 LG4-> ZZ3(LS1)/mild 396
Transmission: TH700(T56)/TH400
Axle/Gears: 3.23(4.10)/3.73

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Basically what I did, except I used aftermarket 305 heads.
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82 Berlinetta #1, orig V-6 car. '86 LG4 swap. Mods: Rebuilt ZZ3 shortblock, self-ported World S/R 305 heads, roller tip 1.5 rockers. ZZ3/4 intake & cam, dual snorkel. Accel coil & module. Jet Hot coated Hooker 2055 headers, 3" catback, Magnaflow. '83 TH700, 2500 stall, shift kit. 3.23 limited slip. Spohn SFCs. Daily yr-rnd driver. Best 14.20/96.4 @ 5800' Bandimere (13.17/103.8 @ sea level).
82 Berlinetta #2. 301k orig LG4 California car. Beautiful condition. 2000 SS LS1/T56 swap WIP.
57 Bel Air, my 1st car. '66 396, mild rebuild, self-ported heads, XS282 cam, Holley/Proform/QFT 750DP on E85, RPM AG, dual-snorkel cool-air inlet, Hedders. TH400 w/3500 stall. 8.2" 10-bolt w/3.73 & Powertrax. Best 13.15/101.54 @ 5800' Bandimere (12.23/109.4).
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Old 07-06-2008, 01:37 PM   #5
doc221978
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Car: '91 Formula
Engine: modified 350... 426 horsepower
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Re: stock 305 equipment on 350

I've had a bad experience with 305 heads on a 350. It can raise the compression more then you want for the street if you're not careful, and a lot of them don't flow to good. Best bet is to look up what you have for 305 and 350 heads before deciding. Everything else will bolt up fine, as long as it's the same gen... if not the intake will take a drill or dremel to get it to work. The bolt holes may need to be elongated.
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Old 07-06-2008, 03:20 PM   #6
Apeiron
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Re: stock 305 equipment on 350

You can end up with too much compression if this is a rebuilt 350 with flat top pistons. If it's a stock lower half with dished pistons, it'll be ok. The LG4 heads will outperform nearly all 350 heads, most of which were low-performance, low-compression smogger heads.
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Old 07-19-2008, 10:28 PM   #7
dKillaCamaro
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Re: stock 305 equipment on 350

The 350 long block i have has never been taken apart it runs good tho the 305 ran like sh!t so the heads would be questionable and dont really want to pull the runnin 350LB apart right. It is a gen 1 2 piece RMS jus like my 83 305 set up.
Also already set the intake on the 350 and hand tightend it down it matched right up so everything should be good then right.
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Old 07-20-2008, 10:50 PM   #8
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Re: stock 305 equipment on 350

any threads on people doing this same or similar swop
Thanx
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