Re: 5.0 heads on a 5.8

rmcomprandy May 23rd 2016, 1:35 pm

plowboy34 wrote:I didn't realize I was gonna start such a conversation with my question as can I drill my own bolt holes or leave it to a machine shop......

Anyways not trying to make anyone mad but here are the facts on these heads as I have laid my own eyes to. They are F3ZE, 3 bar, GT heads, a 1/2" bolt will not go through holes and a 7/16" bolt will. To make sure I had correct size bolts I got out my caliper and checked them. I also checked the head bolts the guy gave me when I purchased the heads and they are 7/16". I also set it right on 1/2" and it definitely is to big to fit in holes. Again not trying to anger anyone just the facts on these heads.

Sorry if we used your thread as a sounding board.

I thought your question had been answered. There is no problem with drilling any small block head with .450" bolt holes to the .517" diameter head bolt holes.

dfree383 May 23rd 2016, 2:42 pm

Lem Evans wrote:
dfree383 wrote:
Lem Evans wrote:Which heads were on the 351W in the 1st generation Lightning F150s?

Regular GT40

So, they would have to be for 1/2" bolts then?

Yes they have the 351w bigger bolts in that application

They also cam on some explorer/mountaineer 5.0's with small bolts to in later years along with the GT40p heads.

plowboy34 May 23rd 2016, 2:51 pm

no probs rmcomprandy.....I never mind a discussion on things that's how a person learns....I was just surprised this question spawned such a conversation. And yes my question was answered..... Very Happy

gmsmkr May 23rd 2016, 3:03 pm

We just didn't want the wrong info out from our board to other readers.... and I also stand corrected not all F3ZE casting had the 1/2 bolt hole but all the lightning and cobra R F3ZE casting on the 351W packed vehicles had the 1/2 head bolt Wink

gt350hr May 23rd 2016, 6:25 pm

gmsmkr wrote:We just didn't want the wrong info out from our board to other readers.... and I also stand corrected not all F3ZE casting had the 1/2 bolt hole but all the lightning and cobra R F3ZE casting on the 351W packed vehicles had the 1/2 head bolt

+1 I went by my own experience with three line heads. I had to use the special bolts on all of them that "I" have owned and ASSumed they were all that way. My apology.

whitefield May 23rd 2016, 10:04 pm

Plowboy34 I am pretty confident in saying that none of us in this thread and conversation were mad or upset at one another. we all were trying to give you correct information . Life is good ! Very Happy

plowboy34 May 24th 2016, 7:02 pm

Its all good on my end fellas....as whitefield says LIFE IS GOOD especially with JESUS

Sponsored content