RE: [Chrysler300] G Engine

I recall reading that the ’55-’58 hemi’s were inspected after boring the castings. If porosity was found, a liner would be installed, and the engine would not be installed in a letter car. It seems that Imperials would also get the cherry blocks. After that, tri-metal bearings were used in the letter cars and different intake manifold, distributor, solid tappets and cam of course.

I look forward to reading informed responses to the question of the differences between New Yorker, 300’s with single carb and ram-engined 413’s, especially any block differences between the 360 HP and 390 HP ram engines. I know the compression ratio was a little lower (9.6 on ram engine vs 10.1 on single carb/hydraulic lifter engines)r. A quick scan of the 1964 engine spec’s in the main service manual and the supplemental manual did not indicate any differences in dimensions, weights, pistons and bearings between the 300 Sport, 300 ram, NY or Imperial 413’s. Other than dual exhaust, mechanical tappets, exhaust valve head diameter, dual carbs, cam, distributor & etc. The lower compression ratio on the ram engine was interesting. Perhaps the ram effect caused too high of a net compression effect??

Anxious to learn.

Rich Barber

Brentwood CA. Summer is nigh. 80’s today.

Periodic reminder: Our Brentwood is about half-way between Oakland and Stockton (Scary ), not the upscale neighborhood in NW Los Angeles.

From: Chrysler300@xxxxxxxxxxxxxxx <Chrysler300@xxxxxxxxxxxxxxx> On Behalf Of 'william ELDER' belder@xxxxxxxxx [Chrysler300]
Sent: Thursday, April 18, 2019 8:14 AM
To: 'Val Jeffers' <edward1108@xxxxxxxxx>; 'Chrysler 300 List' <chrysler300@xxxxxxxxxxxxxxx>
Subject: RE: [Chrysler300] G Engine

All:

I cannot speak to the 413 engines. I started my career at Chryslers in the old Windsor Engine Plant, in the summer of 1971. I was there for the start of the 360 engines. Windsor machined all of the raw castings for those engines, including blocks, cranks, cams, pistons, rods and both intake and exhaust manifolds. As the tooling wore down during the machining process, the tolerances varied. I don’t mean out of spec; but ranged from the allowed minimum to maximum. When it came to assembling the engines the components that went into severe duty engines, hi-po, police interceptor, 360 truck engines etc. all received parts that were as close to the base line specs as possible. I would hope that all of the old performance engines received similar care.

300ly

bill

From: Chrysler300@xxxxxxxxxxxxxxx <Chrysler300@xxxxxxxxxxxxxxx> On Behalf Of Val Jeffers edward1108@xxxxxxxxx [Chrysler300]
Sent: April 18, 2019 9:06 AM
To: Chrysler 300 List <chrysler300@xxxxxxxxxxxxxxx>
Subject: [Chrysler300] G Engine

Greetings all,

There was some discussion regarding the above several months ago and I want to make sure I am clear. When the engine is being assembled and they are aware it is going in a G they simply stamped the H on the top of the engine boss ? So if that be the case and there is no difference in the pistons or heads then the ram manifolds must be the main thing right ?

Thanks,

Val

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Posted by: "Rich Barber" <c300@xxxxxxx>

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