#60111 - 08/29/10 05:29 AM
Re: GM 4 cylinders 151 153 181
[Re: Beater of the Pack]
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tlowe #1716
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Registered: 04/01/04
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Beater, From what I have found you have the jeep/ pontiac/ s-10 version. There are performance heads available for that engine. That engine continued and was used in Fiero's. Super duty parts were avail thru GM, heads, intakes and everything else. The head bolt pattern is almost the same as the 153/181 GM engines. I think they share cams, timing components, front covers .
153/ 181 have the standard SBC bolt pattern on the bell housing. The nice thing with 181's is they produced them currently. I have a few from forklifts with 17000 hrs on them! They are a 4" bore engine. One piece rear seal to. Different heads were used. The forklift engines used a siamesed intke port head. Boat engines used both a 8 port head and the siamesed head. I think there maybe 2 versions of 8 port head. There is also a aftermarket replacement head. Flywheels for 153/181 are the same as SBC for the corresponding 1 piece or 2 piece seal.
The 2 holes on yours is to put the Distributor in 2 different locations depending on application. Not sure on your flywheel or bell for the 151 you have.
Edited by tlowe #1716 (08/29/10 10:31 AM)
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#60115 - 08/29/10 10:34 AM
Re: GM 4 cylinders 151 153 181
[Re: Beater of the Pack]
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tlowe #1716
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Registered: 04/01/04
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The 151 VC is different than the 153/ 181.
I'd like to find a intake for the 153/181. Want to put one in a field buggy for the kids. Keep it tamed down with the 4 cyl.
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#60118 - 08/29/10 11:35 AM
Re: GM 4 cylinders 151 153 181
[Re: Beater of the Pack]
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tlowe #1716
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Registered: 04/01/04
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SPA does make a turbo manifold for the 153/181 siamese head. Hmmm.
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#60122 - 08/29/10 01:42 PM
Re: GM 4 cylinders 151 153 181
[Re: jalopy45 #4899]
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jalopy45 #4899
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Registered: 04/09/06
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Here's some more info., The 153,230 and 307 all share the same bore and stroke. The 153,230,250 and 283,307 all share the 3.875” bore and the 181, and 327 ,350 share a 4” bore. The 153,181,194,230 and 250 and Vega 4 share the same rods, 1.030” wide at the big end. You can use the stock or aftermarket straight or splayed cap's on your 4 or 6 engine if the are for the small block Chevy & for the small journal crank. >> if you run a roller cam you use chevy SBC lifters and Olds 350-455 tie bars..>> The 153,181,194,230,250 all share the same timing gear and the crank gear is shared with the 292 Push rod guide plates you use the 350-455 Olds or the 151 chevy for the 1977-79 engine.
Edited by jalopy45 #4899 (08/29/10 05:23 PM) Edit Reason: appease MBHD
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'45 Ford PU '63 Nova Wagon 250 4 spd. '63 MGB GT Ecotec Altered
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#60124 - 08/29/10 05:06 PM
Re: GM 4 cylinders 151 153 181
[Re: Mean buzzen half dozen A.K.A. Hank]
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Chevelle292Wagon
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Registered: 08/18/03
Posts: 227
Loc: Douglassville, PA - USA
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bore and the 181,250 and 327 ,350 share a 4” bore.
250 what,,,,, has a 4"bore? Typo?
MBHD
Don't we all wish it did! Pete
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Pete 64 Chevelle 61 C30 Panel truck
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#60126 - 08/29/10 05:13 PM
Re: GM 4 cylinders 151 153 181
[Re: Chevelle292Wagon]
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Mean buzzen half dozen A.K.A. Hank
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Registered: 09/23/04
Posts: 4550
Loc: Ca
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Sure do, & a stroke of 3.75- 3.85" 
MBHD
bore and the 181,250 and 327 ,350 share a 4” bore.
250 what,,,,, has a 4"bore? Typo?
MBHD Don't we all wish it did! Pete
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12 port SDS EFI
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#60151 - 08/31/10 07:48 PM
Re: GM 4 cylinders 151 153 181
[Re: Beater of the Pack]
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tlowe #1716
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Registered: 04/01/04
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With a 5 port head the lumps are a dirrect fit. I would use 1.84/ 1.6 for a moderate motor and 1.94/ 1.60 on a hot one.
The 5 port will perform very well.
The good 8 port comes with 1.84 intakes. The individual runners are a plus and will allow for a smoother running engine with better fuel distribution.
Either head will need custom headers and possibly a custom intake.
150-200 HP and 1500 lbs could be alot of fun to drive. Tom
Edited by tlowe #1716 (08/31/10 07:49 PM)
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#60284 - 09/05/10 02:35 PM
Re: GM 4 cylinders 151 153 181
[Re: Beater of the Pack]
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tlowe #1716
12 PORT ADVERTISER
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Registered: 04/01/04
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gearhead (mod for the BB) may know what is needed.
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#60303 - 09/06/10 09:26 AM
Re: GM 4 cylinders 151 153 181
[Re: tlowe #1716]
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jalopy45 #4899
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Registered: 04/09/06
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