« previous next »
Pages: [1]   Go Down

Author Topic: porting heads suggest  (Read 3171 times)

Offline fabioblazer

  • Newbie
  • Posts: 16
porting heads suggest
« on: November 08, 2009, 04:33:47 am »
Hello guys!

I must remove heads from my '81 k5 Blazer 305 engine, 'cause i must replace old lifters with new ones OE.

I'm thinking that it could be a good thing check-out heads for crack or damage and doing "porting heads".

With "porting heads" process, which other process it's important?

if i improve air flowing, intake manifold must be replaced with better new?

or for example with new exhaust manifold?

If air runs better but it's blocked by tight exhaust manifold, i think could be just an hald good job.



Thanks guys for attention.

Fabio

Logged

Offline VileZambonie

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 19192
Re: porting heads suggest
« Reply #1 on: November 08, 2009, 06:37:15 am »
Why are you replacing the lifters? I wouldn't waste my time porting 305 heads unless I did some significant engine mods.
Logged
,                           ___ 
                         /  _ _ _\_
              ⌠¯¯¯¯¯'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline krazylunatic

  • Newbie
  • Posts: 34
Re: porting heads suggest
« Reply #2 on: November 08, 2009, 11:27:12 am »
ive heard the price of having port work and all done by a shop is close to the same cost wise as just buying an aftermarket set
Logged

Offline Irish_Alley

  • Tim
  • Senior Member
  • ****
  • Posts: 13333
  • Family is not an important thing. It's everything.
Re: porting heads suggest
« Reply #3 on: November 09, 2009, 01:30:11 am »
like vile said i don't know about a 305 but if you were to do it you should get your manifolds exhaust and intake ported and matched with it all and i would also go with headers to help out a little. and aftermarket intake
Logged
If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes

Offline HAULIN IT

  • Senior Member
  • ****
  • Posts: 1542
Re: porting heads suggest
« Reply #4 on: November 09, 2009, 09:09:18 am »
Fabio, Welcome to the site! I also agree with the others...Don't bother. By the way, you do not need to remove the heads to replace the lifters, I also question though...Why must you replace the lifters? Lorne
Logged

Offline Captkaos

  • OWNER and Administrator
  • Administrator
  • Senior Member
  • *****
  • Posts: 18469
    • http://www.73-87chevytrucks.com
Re: porting heads suggest
« Reply #5 on: November 09, 2009, 03:56:59 pm »
If you are replacing the lifters because of wear, putting new ones on a used cam will not fix anything.
Logged
Pages: [1]   Go Up
« previous next »