HaabHauling Posted February 20 Share Posted February 20 For a 1991 RD688s does the turbo number S3A038 and 631GC5127AM22 sound correct? I'm finding this turbo belongs on a 250hp motor. Is there any other turbo you would use on a non turned up e7-350? Please provide part numbers if at all possible. I'm having trouble finding the turbo listed above. It's moderately pushing oil. Thank you in advance! Quote Link to comment https://www.bigmacktrucks.com/topic/75197-turbo-help-needed-91-e7350-turbo-part-numbers/ Share on other sites More sharing options...
Adkat Posted February 20 Share Posted February 20 Looks like it's for a 350. Hope this helps 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75197-turbo-help-needed-91-e7350-turbo-part-numbers/#findComment-569945 Share on other sites More sharing options...
HaabHauling Posted February 22 Author Share Posted February 22 Dumb Question... would any of these 👆 listed for a E7-350 within the proper year range work? Why in the hell are there so many? Quote Link to comment https://www.bigmacktrucks.com/topic/75197-turbo-help-needed-91-e7350-turbo-part-numbers/#findComment-570092 Share on other sites More sharing options...
Joey Mack Posted February 22 Share Posted February 22 I will post a link here in a minute Quote Link to comment https://www.bigmacktrucks.com/topic/75197-turbo-help-needed-91-e7350-turbo-part-numbers/#findComment-570096 Share on other sites More sharing options...
Joey Mack Posted February 22 Share Posted February 22 Well my E-7 Books start at 1994.. So here is what I have. The note about the part number change is from an E-7 overhaull book, the others are from the tune-up book. Jojo https://photos.app.goo.gl/cM312umDRyBaBFFx7 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75197-turbo-help-needed-91-e7350-turbo-part-numbers/#findComment-570098 Share on other sites More sharing options...
Adkat Posted February 22 Share Posted February 22 There'll be slight differences in some of them, inlet outlet position and connection,manifold mount angle, etc. Some are just supersessions of previous numbers and some will reman numbers. These guys are in PA, might be worth a call. https://momentumworx.com/mack/?srsltid=AfmBOopssZviGnxvGTkEhr2LIJZFpAGTZp41VDAq7NheTnzhhL1opr-z 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75197-turbo-help-needed-91-e7350-turbo-part-numbers/#findComment-570123 Share on other sites More sharing options...
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