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Old 10-12-2005, 01:33 AM
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Chevy 305 H.O. Question.

My question is... whats the difference between a normal 305 and a H.O. 305? My ??? leads to this...my 84 Monte has a stock 305 and this lady is selling a 1988 Monte LS... engine runs, tranny is good, doesn't have the header panel but starts with a battery I used. And i want to know if that could have a H.O. 305...There is a difference in the 88 Monte is...... the valve covers have the bolts on top of the cover instead of just 4 bolts on the sides (like mine).
The distributor has a small cap(what is that called?) , it uses a coil on the side.

Did you kinda sorta almost understand my post??

The car should just be good for parts and the motor & tranny because she doesn't have the title. But for $200 I think i'm going for it.

Any comments would be appreciated. Thanks.



84MC

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Last edited by 84MC; 10-12-2005 at 01:40 AM.
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Old 10-12-2005, 02:48 AM
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Higher lift an longer duration cam on the H.O., The difference in the small block valve covers is the generation of engine you have, year specific. the distributor is an HEI with external coil , GM made them both ways. GM changed different things through the years such as rear main seal design, valve covers came along with the vortec head changes i think, which included manifold exhaust an intake changes ,along with the early TBI's an carb. options, till later phasing out the carbs. Flywheels will be different depending on rear main seal design. This is a few of the differences off the top of my head.

Last edited by chiss; 10-12-2005 at 03:26 AM.
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Old 10-12-2005, 04:30 AM
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305 Ho

The LS will not have a 305 H.O. They only came in the SS. The 8th character of the vin will be a "G" for a 305 HO car and an "H" for a normal 305. Also the RPO code L69 will mean that the car has a 305 HO.
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Old 10-12-2005, 06:47 AM
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Run of the mill LG3/LG4 305 is rated for ~150hp depending on year and model.

For the L69 305HO engine - a Quadrajet 795 CFM 4BBL carburetor, a L-81 Corvette camshaft, and Camaro crossfire heads. The heads have 58cc chambers for 9.5 Compression.

The L69 only came in the Monte Carlo SS and some Camaros. Oddly enough, the Camaro version was rated at 190hp.

After '86, Chevy started using the Centerbolt valve covers. This, along with the 1-piece rear main seal(intro-ed in '86), was an effort to reduce warranty work for oil leaks. The HEI was also changed after '86 to use a separate coil instead of the unit built in.

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Old 10-12-2005, 10:56 AM
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Thanks for the information guys, I guess i'm gonna check on the VIN, but i think i'll go for it, and just keep the engine and tranny, i kind of just wanted to know if it was a diferent engine but its fine. We've had the Monte for 10 years and the 305 has been good.



84MC
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Old 10-12-2005, 01:31 PM
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If you're just looking for a engine, go to a bone-yard. I know you can get a 350 for $200 or less. I'm not a SBC fan, but hey the 350's are better than the 305's so why not?
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Old 10-12-2005, 02:59 PM
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Quote:
Originally Posted by ap72
If you're just looking for a engine, go to a bone-yard. I know you can get a 350 for $200 or less. I'm not a SBC fan, but hey the 350's are better than the 305's so why not?
It's not that i need an engine it's just a good deal for me because I could have an almost complete parts car. Maybe use the motor + tranny for a small project or make some $$ out of it.



84MC
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Old 07-17-2009, 11:15 AM
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305 valve lift

what is the max valve lift on both those motors?
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