1981 camshaft change

[Hello]

well my cam is gone! Does crane or summit racing sell a OEM like grind!? Parts # would help too!! Thanks 1981 vette automatic Vin(6)

 

[fine69]

well my cam is gone! Does crane or summit racing sell a OEM like grind!? Parts # would help too!! Thanks 1981 vette automatic Vin(6)

Sealed Power (aka TRW) makes camshafts with specs close to OEM. I went with a Sealed Power cam just slightly more aggressive than the stock cam in my L-46 350/350 hp engine.

Summit Racing has the Sealed Power ZCS274 which looks like it may be an appropriate OEM replacement for your '81.

I was able to get a good deal from Racer's Outlet in Indianola, IA. Their phone # is 515-961-6109.

I would also give them a call, give them the details of your car (e.g., auto/manual tranny, A/C, etc) and see what they have to offer.

Don't forget to also order replacement pushrods and lifters... perhaps there is a kit that is available.

Good luck to you...

Ralph

 

[Jack]

Your other posts indicate you have sticking valve, loose rocker stud etc ... you must have entire valvetrain looked at closely by experienced person & have it fixed before you install another cam.

The sp 274 cam Ralph suggests is a correct stock OE-type replacement for 81 vette w/ 6 vin.

Many folks think stock 81 cam is woefully weak ... & I agree!

I suggest a little more cam ... I am conservative here ... I suggest this cam for a stock/relatively stock 81 C3 ... look at summit K1102 Summit SUM-K1102 - Summit® Cam and Lifter Kits - summitracing.com ... cam WITH lifters is $90 ... you'd be hard pressed to find a better value ... and same specs as sp KC1014 below.

summit does have the same kit (as 1102 above) in sealed power box for another $50.
Sealed Power KKC1014R - - summitracing.com ... same specs as K1102 above ... and it's what sp recommends in sp catalog as upgrade for 81 vin 6

 

[Hello]

I pulled the intake off yesterday and it wiped #8 intake and #7 exhaust with a lot of metal grit throughout. its getting a overhaul!

 

[Jack]

stock motor has dished pistons and weak cam.
suggest you overhaul with flattop pistons and a bit more cam.

Let us know when & what you plan for along with realistic budget.

 

[fine69]

I would definitely pay attention to Jack's posts. He was a MAJOR influence for my decision to go with a slightly more aggressive-than-stock camshaft --- one of the best post-overhaul mods yet (thanks again, Jack )...

Ralph