I am putting in a set of 203's in my bagger, and had a couple of questions about the parts needed. Originally I had planned to just replace the cams and the pushrods, but then I was told to also replace the valve springs with straight double coil set, and replace the tappets. Is this nesc? It really increase the cost of the parts.

The parts I am looking at are:

25937-99b - cams
18273-00 - valve springs
17997-99a - ajustable push rods
18562-02 - tappets

Thanks

Joe

 

It's probably not a bad idea to repalce the lifters. For 203's, you don;t "have to" use adjustable puchrods, but it saves from having to remove the rocker covers and rocker assy's and re-install.

For that bagger, you might wanna take a look at the Andrews 26's. You'd be a whole bunch happier with the results.

Springs.... not necessary for a "bolt-in" cam.

 

The reason I am going with 203's is because of the extended warranty. Did you change the valve springs or did the originals stay in?

 

10/4.....

No need to change springs unless you go with a cam much bigger than a 203.

 

Thanks.

Joe

 

The cam springs would only allow for higher rpm's - you're looking for better low end torque - expensive springs are not needed.

 

my stock springs are still in mine,i've had no problems. wish i had gone with the adjustable push rods,but the funds didnt allow it at the time,should it need work i'll have them changed out then to save on tearing into the top end again and of coarse the labor rate too

 

Agreed 203s in a bagger is not going to make you happy.

 

I've been looking around for some HP and Torque comparison charts between cams, and manufacturers, but have not found any yet. It's hard to buy a product with nothing substantial to look at, just opinion. If you know where I can get some better info please tell me.

Thanks

Joe

 

www.head-quarters.com Check out the 34G...great bolt in gear drive for a stock 88 or mild 95.