I've got a '71 LeSabre 2-door (4300? lbs) that currently has a '70 GS350 engine with a solid 350/375 transmission. The car is a daily driver and tow vehicle, and will see maybe once a year at a dragstrip, not counting stoplight import snacks. Big car need lots of food...:bglasses: I'm starting to rebuild a 455 and have a THM 400 ('72 full-size donor). I'm not sure which cam for the 455, but looking at either shorty headers or stock manifolds, 800 cfm Q-jet on an aluminum manifold, mild diy head porting. My goal is as much grunt as possible, but with good manners. It IS a buick, after all. And gas mileage is a bonus, too. All that said, what cam and s-p converter works best in a heavy car? James
im no expert, but with the s/p you can run all th cam you want till loses vacumm, ect... you just want one that gets good mileage, i think the 118 cam is the most popular for your applica tion, i went from a 3000 s/p to a 4000 s/p and for street driving there was little to no difference,
Doesn't the 118 cam's power range (2500-6000) mean lower low-end torque, and/or what will it do for mileage? BTW, the car has an open 3.08 rear end. I like the ratio, but of course am on the hunt for a posi. Oh, and I can't believe that there are no more opinions out there about 455 builds for the "larger" Buicks. (Although a LeSabre is NOT a large car, not when a Skylark was sold as a compact!) James o No:
talk to the tec guys, or read your catalog that is a good guide, they are real good at helping you set up your combo
