348 vs. 350 rebuild - ChevyTalk --The Social Network for Chevy Fans

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Post: 348 vs. 350 rebuild (Topic#283364)

Impala58
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06-29-12 02:05 PM - Post#2242697

I have done 350 rebuilds but never a 348. Is there any differences that are unique to the 348. Other than the head shape.

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Grey
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06-29-12 04:00 PM - Post#2242737
In response to Impala58

I have heard horror stories of "machine shops" not beeing aware of the deck angle, assuming it´s at 90deg like other engines. Needless to say it it turned ugly although i suppose these incidents happened a long time ago..

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62chevy427
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06-29-12 04:44 PM - Post#2242748
In response to Impala58

gotta be careful when installing the pistons and not hurt the rings. other than that,just good rebuilding techniques work.

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DonSSDD
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06-30-12 01:01 AM - Post#2242852
In response to 62chevy427

Check out 348-409.com for advice as well.

Don

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arnieg141
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06-30-12 04:01 AM - Post#2242862
In response to DonSSDD

DonSSDD Said:

Check out 348-409.com for advice as well.

Don

GET ER DONE .. AS I GET OLDER I LIKE FAST CARS I CAN STILL DRIVE. AND VERY SLOW WOMEN I CAN CATCH while still able..arnie garrison

Impala58
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06-30-12 09:03 AM - Post#2242926
In response to Impala58

Thanks for the info guys.

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06-30-12 10:10 AM - Post#2242950
In response to Impala58

Don't forget the intake/exhaust push rods are different lengths.

models916
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07-02-12 02:28 PM - Post#2243688
In response to Jens

If stock, the piston pins are offset left and right. Rear cam bearing is unique and has to be installed by someone that know that. Rear main has two extra seals along the side that lots of people leave out. Early 58 block has a rope rear seal. Oil pump rod is slightly different. Truck timing chain set is retarded from passenger. Oil slinger on front timing gear always gets lost and oil makes its way up the front breather. Just make sure the builder knows the 348 is different than a SBC.