84 Olds Cutlass Motor

pjfouts · 12-04-2012, 10:09 PM

I am new to stock eliminator racing and i am looking at getting a motor for my 1984 cutlass. After looking at the blueprints on NHRA the only difference between the Olds 305 and the Chevy 305 are the pistons...So my question is i found a 305 sbc for sale that runs good but it has flat top pistons and according to the olds 305 it had dish pistons is it legal to run the flat top pistons or do i need to find another motor??

Joe Toller · 12-04-2012, 11:11 PM

The Olds actually should be a 307. Completely different animal, but good.

pjfouts · 12-04-2012, 11:29 PM

According to the stock classifications and engine blueprints the 305 was used as well...I just am going by the NHRA sheets thats what im trying to find out though haha im a little lost with this right now still trying to get all my info straight.

Tom Moock · 12-04-2012, 11:34 PM

Wrong information

pjfouts · 12-04-2012, 11:42 PM

Thats my next questions...is it possible to change flat top pistons to dish pistons or is that major surgery? the motor im looking at is a 305/150hp motor and has the all the same numbers and everything for the 84 olds except the pistons are flat as i said and the 84 has dish top so i thought maybe i could just change those but i am just a hired gun so i dont know any technical info about it.

Jim Wahl · 12-05-2012, 02:02 AM

Assuming you are for real, let me tell you it's about $20,000 to $40,000 more complicated that just switching a set of cast pistons in a motor! But seeing as you are a professional hit man, money shouldn't be a big problem. No? Jim

Thanksgiving is over but somehow I still smell turkey!

.

pjfouts · 12-05-2012, 02:16 AM

I was being serious i just drive never been a mechanic ...and i used hired in a sarcastic tone... but thanks for the info thats why i asked...trying to learn a little bit about all of this

12-04-2012, 10:09 PM	#1
pjfouts Junior Member Join Date: Dec 2012 Posts: 41 Likes: 2 Liked 3 Times in 3 Posts	84 Olds Cutlass Motor I am new to stock eliminator racing and i am looking at getting a motor for my 1984 cutlass. After looking at the blueprints on NHRA the only difference between the Olds 305 and the Chevy 305 are the pistons...So my question is i found a 305 sbc for sale that runs good but it has flat top pistons and according to the olds 305 it had dish pistons is it legal to run the flat top pistons or do i need to find another motor??

12-04-2012, 11:11 PM	#2
Joe Toller Senior Member Join Date: Jan 2009 Location: Lewistown, Montana Posts: 550 Likes: 78 Liked 4 Times in 4 Posts	Re: 84 Olds Cutlass Motor The Olds actually should be a 307. Completely different animal, but good.

12-04-2012, 11:29 PM	#3
pjfouts Junior Member Join Date: Dec 2012 Posts: 41 Likes: 2 Liked 3 Times in 3 Posts	Re: 84 Olds Cutlass Motor According to the stock classifications and engine blueprints the 305 was used as well...I just am going by the NHRA sheets thats what im trying to find out though haha im a little lost with this right now still trying to get all my info straight.

12-04-2012, 11:34 PM	#4
Tom Moock Senior Member Join Date: May 2004 Posts: 801 Likes: 1 Liked 10 Times in 6 Posts	Re: 84 Olds Cutlass Motor Wrong information __________________ Tom Moock 5704 STK Last edited by Tom Moock; 12-05-2012 at 12:31 AM. Reason: Wrong information

12-04-2012, 11:42 PM	#5
pjfouts Junior Member Join Date: Dec 2012 Posts: 41 Likes: 2 Liked 3 Times in 3 Posts	Re: 84 Olds Cutlass Motor Thats my next questions...is it possible to change flat top pistons to dish pistons or is that major surgery? the motor im looking at is a 305/150hp motor and has the all the same numbers and everything for the 84 olds except the pistons are flat as i said and the 84 has dish top so i thought maybe i could just change those but i am just a hired gun so i dont know any technical info about it.

12-05-2012, 02:02 AM	#6
Jim Wahl Veteran Member Join Date: Jan 2002 Location: Central Florida Posts: 5,843 Likes: 666 Liked 683 Times in 129 Posts	Re: 84 Olds Cutlass Motor Assuming you are for real, let me tell you it's about $20,000 to $40,000 more complicated that just switching a set of cast pistons in a motor! But seeing as you are a professional hit man, money shouldn't be a big problem. No? Jim Thanksgiving is over but somehow I still smell turkey! . __________________ Jim Wahl....NHRA #2239 S/SS - IHRA # 8 Stock, D2 Stock Champion (forever I guess) 2019 Baby Gators Stock Champion 2009 D2 National Open Stock Champion 1981 D2 West Palm Beach LDRS SS Runner Up Past President, Southern Stock / Super Stock Association.

12-05-2012, 02:16 AM	#7
pjfouts Junior Member Join Date: Dec 2012 Posts: 41 Likes: 2 Liked 3 Times in 3 Posts	Re: 84 Olds Cutlass Motor I was being serious i just drive never been a mechanic ...and i used hired in a sarcastic tone... but thanks for the info thats why i asked...trying to learn a little bit about all of this Last edited by pjfouts; 12-05-2012 at 02:29 AM.