So I ordered all the stuff from TPIS. Super L98 cam for 87-94 hyd. Roller cam, the springs they suggest for cam, retainers, and seats. I have the stock 083 heads. Do I need to use the seats?
can I put on just the new retainers?
Or should I just use the stock oil caps and retainers?
cam can be used with 1.5 or 1.6 rockers. I have a set of 1.52 roller tips from another project I was going to use.
specs on cam
L/C 112
intake & exh @ .006 270.6
intake & exh @ .50 219.6
lift is .450 on int & exh
* spring specs
hyd. Roller valve spring 1.25” w/ damper
130lbs seat pressure @ 1.75” installed height
325lbs @ 1.200”
coil bind 1.150”
outside dia. 1.250”
inside dia. .880”
max lift .550”
I’m not an engine builder so some stuff throws me off. Just trying to learn and search when I get stuck.
Thanks

 

Should be fine.

 

What should be fine? Just the new retainers?

 

Oh sorry, I thought you were asking about the springs.

I would not re-use the stock ANYTHING. Use the new 1.25" retainers and new keepers. Use the "positive" valve guide seals such as FelPro SS72527 on both int and exh. Don't bother with the O-ring or "umbrella" type "seals". Do away with the oil splash shields and "rotators". Shim the springs to get the 1.75" installed height" may take as much as .125" on the exh, maybe even more. Since your cam's lift is well under the springs' max, you can shim the installed height to slightly less - emphasis on SLIGHTLY - than the spec, to get a shade more seat pressure; maybe to as low as 1.73" but I wouldn't go any farther than that. The seats are really intended for aluminum heads, where the springs will eat into the casting; not as important for your cast-iron. Use them if they'll fit (probably won't) but if not just use shims.

 

Thanks for the info. That’s all I needed and a direction to go in. Big help and simple understanding. Appreciate it very much.