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Lady72nRob71 · 08-28-2008, 06:28 AM

If you have an OD tranny, you have a 200R4. If not, you have a TH200. Only two choices that year.

It is true that 180HP from a 307 is about the best it could get within a REASONABLE amount of time, effort, and money. There is a 307 "hop-up" page here which sums it up nicely:
http://tlentz.oldsgmail.com/more_power.html

I looked into this a while back, as i have a 307 in my 86 CS.
I finally opted to just leave it alone as stock and get a faster car later...
Now I have heard of a few who swapped in a 70-72 350 and actually got the ECM to work with it (if you are in a state that tests emissions)
I would just leave the sensors in place (and not use) to pass visual inspection should the car not be subject to sniffer tests.

08-28-2008, 06:28 AM	#11 (permalink)
Lady72nRob71 Senior Member Join Date: Feb 2008 Location: Plano, TX Posts: 573	If you have an OD tranny, you have a 200R4. If not, you have a TH200. Only two choices that year. It is true that 180HP from a 307 is about the best it could get within a REASONABLE amount of time, effort, and money. There is a 307 "hop-up" page here which sums it up nicely: http://tlentz.oldsgmail.com/more_power.html I looked into this a while back, as i have a 307 in my 86 CS. I finally opted to just leave it alone as stock and get a faster car later... Now I have heard of a few who swapped in a 70-72 350 and actually got the ECM to work with it (if you are in a state that tests emissions) I would just leave the sensors in place (and not use) to pass visual inspection should the car not be subject to sniffer tests. __________________ -Rob Young 1972 Cutlass Supreme Convertible (442 clone) -"Lady" (My mistress...) http://www.flickr.com/photos/robsalbum/sets/ 1986 Cutlass Supreme Coupe - "Pristine" 1978 Ford (Old Faithful) a.k.a. "the Tramp" 1997 Cadillac STS (for sale - too many cars!) 1999 Harley Davidson Sportster - "the Freedom Machine" Last edited by Lady72nRob71 : 08-28-2008 at 06:33 AM.