metric 200 chevy bolt pattern

ss3011 · 03-02-2018, 06:03 PM

Way back in the mid 80's when Oldsmobile was out there racing a lot of 307 Cutlass's , the Stockers were running with a 350THM . I was able to get them to give me one so we could develop a 200-4R to race . To use 4th gear, I was running a 5.57 rear gear , most had about a 5.13 . At the time there was no support for the 200/200-4R so converters were a problem . Also a .67 ratio , 4th gear , dragged the engine down too far . The problem was fixed by swapping in a .72 ratio overdrive from a transmission that GM built for BMW . Now there is great support for a 200 , so converters , and lightweight internals are readily available .

03-02-2018, 06:03 PM	#12
ss3011 Senior Member Join Date: Feb 2002 Location: Southeast Michigan Posts: 909 Likes: 70 Liked 239 Times in 114 Posts	Re: metric 200 chevy bolt pattern Way back in the mid 80's when Oldsmobile was out there racing a lot of 307 Cutlass's , the Stockers were running with a 350THM . I was able to get them to give me one so we could develop a 200-4R to race . To use 4th gear, I was running a 5.57 rear gear , most had about a 5.13 . At the time there was no support for the 200/200-4R so converters were a problem . Also a .67 ratio , 4th gear , dragged the engine down too far . The problem was fixed by swapping in a .72 ratio overdrive from a transmission that GM built for BMW . Now there is great support for a 200 , so converters , and lightweight internals are readily available .