308 or 306 ?

M

MattTheBat83

New Member

Mar 31, 2006

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Apr 12, 2006

#1

• Apr 12, 2006

• #1

i was to get an engine of this size would it be ok to run some bolt ons and possibly 5 lbs from a sc?

 

D

Daggar

New Member

Jul 19, 2004

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Apr 12, 2006

#2

• Apr 12, 2006

• #2

There's perty much zero difference as far as that goes.

 

Strype

Cuthbert catcher

Founding Member

May 11, 1999

61

34

104

Huntsvegas, AL

Apr 12, 2006

#3

• Apr 12, 2006

• #3

Leave as much sidewall as possible for cooling purposes IMO

 

J

jjd975

Founding Member

Jul 17, 2000

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louisville,kentucky

Apr 12, 2006

#4

• Apr 12, 2006

• #4

Stay with a 306. No need to remove more material than needed from a weak block.

 

1

1SLO306

My 97 GTP owns you ALL!

Mar 31, 2005

904

1

17

Muhlenberg, ky

Apr 12, 2006

#5

• Apr 12, 2006

• #5

jjd975 said:

Stay with a 306. No need to remove more material than needed from a weak block.

Click to expand...

so true!!!

 

soontobefastfox

Member

Nov 15, 2005

275

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16

Troy, Michigan

Apr 12, 2006

#6

• Apr 12, 2006

• #6

why not just keep it a 302 and get better pistons and save some money for the machine work, unless you already have the block machined.

 

M

MattTheBat83

New Member

Mar 31, 2006

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Apr 12, 2006

#7

• Apr 12, 2006

• #7

i was thinking of getting something like this : http://cgi.ebay.com/ebaymotors/Ford...ryZ33615QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

 

Yobi1Kanobi

Member

Apr 9, 2003

559

0

16

Apr 12, 2006

#8

• Apr 12, 2006

• #8

well if you have wear on the block your going to need maching in order to get a proper seal. But I wouldnt go any more than 30 over giving you a 306. IMO it weaken the cylinder walls and cooling isnt as good either. There isnt much if any HP advantage between 302 and 308.

 

RBRANDX

New Member

Mar 10, 2006

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Myrtle Beach, SC

Apr 12, 2006

#9

• Apr 12, 2006

• #9

If you ever plan on running any type of power adder, go ahead and upgrade to forged pistons.

 

5spd GT

"the 5.0 owns all"

Founding Member

Aug 7, 2002

9,516

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99

Arkansas

Apr 12, 2006

#10

• Apr 12, 2006

• #10

I wouldn't take any more off the walls than .030 (306) if your planning on boost. Do the .030 if you have a used block that hasn't been bored/line honed...do the 302 if you have a new block. Stock piston size...

You will be plenty fine, just get a good tune...

Not much difference in hp between a 302, 306, or 308...maybe just a few hp...

Good Luck

 

M

MattTheBat83

New Member

Mar 31, 2006

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Apr 13, 2006

#11

• Apr 13, 2006

• #11

any more opinions?

 

STANGateURlilSS

Founding Member

May 2, 2002

716

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16

USA & SANDBOX

Apr 13, 2006

#12

• Apr 13, 2006

• #12

you can bore a stock block .060 but then the walls get thin.. and they tend to run hot.. which with boost is a no no.. as stated before the difference between a 306 and 302 hp is marginal.. but if you have to bore the block do not go more then about .030.. hell if its a new block leave it alone.. just have it honed to make sure u get a nice ring seal.. as for 5 lbs of boost.. yes a stock block can handle 5lbs of boost.. just make sure it doesn't run lean.. so just make sure u get a good tune..

 

M

MattTheBat83

New Member

Mar 31, 2006

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Apr 13, 2006

#13

• Apr 13, 2006

• #13

im thinking of buying one of these engines but im not sure what add ons i should get
http://cgi.ebay.com/ebaymotors/Ford...cmdZViewItemQQcategoryZ33615QQitemZ8054896621 Any Aftermarket Camshaft - $180
Forged Pistons - $350
TFS Main Stud Girdle w/ ARP Main Bolts - $200
ARP high-performance connecting rod bolts - $85 [/B]
i was thinking i should get the forged pistions, the cam, and the connecting rod bolts, but should i get the main stud girdle?(not sure what it is)

 

5spd GT

"the 5.0 owns all"

Founding Member

Aug 7, 2002

9,516

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99

Arkansas

Apr 13, 2006

#14

• Apr 13, 2006

• #14

The main stud girdle bolts onto your crank caps and keeps everything tied together in case your block decides to crack...just keeps it less "messy"...

I wouldn't waste you money on it personally...good luck!

 

M

MattTheBat83

New Member

Mar 31, 2006

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0

Apr 14, 2006

#15

• Apr 14, 2006

• #15

thanks but i should probably get the cam and forged pistions?

 

1

1SLO306

My 97 GTP owns you ALL!

Mar 31, 2005

904

1

17

Muhlenberg, ky

Apr 14, 2006

#16

• Apr 14, 2006

• #16

ummmmmmmmm, of course