im looking to rebuild the motor or to gain some good hp out of the stock any help thank you

 

Send the heads to a reputable machine shop and get a good valve job done. That will get you the best gain.
Also, if you add headers and an X pipe for the exhaust system, you will see some gain as well.

Keep all of your original parts in case you ever sell the car.

 

thanks alot i apreciate the advice it is a w-29 with a 350 roket motor motor my dad bought the car new and him and my mom went to prom in it the motor is just tierd it has 122,912 i have been keeping track since it rolled over the apraiser said aslong as i dont change the block im all good cause it has the matching #s on it to match the car if there is any thing else you can think of please note take care man

 

If it is a W-30, it will not have a 350 in it. It had better be a 455, or your Dad did a swap at some time.
Gene

 

i ment it was a w-29 w-30 only came with the 455 correct

 

The W-29 442 package was a handling and appearance package in 1972. It included the 442 emblems and grilles and the FE2 suspension package (stiffer springs, shocks, and rear anti-roll bar with boxed lower control arms). W-29 was available on four models that year, the Cutlass Holiday Coupe, Cutlass S Sport Coupe, Cutlass S Holiday Coupe, and Cutlass Supreme convertible. Since the W-29 package did not include any special engines, it could have been ordered with any of the available engines that year. That includes the 350 2bbl single exhaust all the way up to the W-30. Note that the cutout back bumper was only installed on cars with the 455. Even if you ordered the N10 dual exhaust on the 350, it came with the straight back bumper.

 

thanks

 

how much would it coast to re build my heads they are # 7 what would be a good price for a mild build.