351W with broken rod

For anything machine shop / speed shop or engine specific. More technical than the range but not quite tuning specific.
decipha
Posts: 5034
Joined: 2021 Feb 15, 12:23
Location: Metairie, LA
Vehicle Information: Work Truck
'19 F-150 3.3L

Re: 351W with broken rod

Unread post by decipha »

yeah id keep the cam. Might as well keep the lifters if your keeping the cam just mark where each one goes and its orientation so they go back in same as they came out.

unless theyre damaged or your upping the compression no need in replacing the pistons

why are you machining the block or replacing the crank?

if budget is your objective why not just pull it down and inspect it? if all is well just pass a ball hone through it and re assemble with new bearings and rings and done.

id score a set of early gt40 heads if you can.
efloth
Posts: 300
Joined: 2021 Feb 15, 22:12
Location: Sacramento CA
Vehicle Information: 1991 F150 4.9L J1X 80lb Injectors E85
1995 F150 5.8L MOB1

Re: 351W with broken rod

Unread post by efloth »

Thanks for the info. Yeah the inspection failed on bearings and a crank main was scored. Rod bearings were down to the copper. I didn't plan on going in this deep but it is cheap insurance getting a good crank.

I like your idea of reusing the pistons. The hyper pistons with coated skirt are only $16 for 30 thou over so that what I was thinking. $250 for the block work and hot tank but I'll think about just doing the minimum you suggested. I kept locations of lifters but didn't mark orientation, am I up a creek?

I'll see if I can find GT40 heads. Do they have smog ports in the rear?
decipha
Posts: 5034
Joined: 2021 Feb 15, 12:23
Location: Metairie, LA
Vehicle Information: Work Truck
'19 F-150 3.3L

Re: 351W with broken rod

Unread post by decipha »

dont bore it anymore than u have to

250 is definitely lacking, i charge 650 to machine a block and at that i make almost no profit

nah lifters should be ok

yes they do
efloth
Posts: 300
Joined: 2021 Feb 15, 22:12
Location: Sacramento CA
Vehicle Information: 1991 F150 4.9L J1X 80lb Injectors E85
1995 F150 5.8L MOB1

Re: 351W with broken rod

Unread post by efloth »

efloth
Posts: 300
Joined: 2021 Feb 15, 22:12
Location: Sacramento CA
Vehicle Information: 1991 F150 4.9L J1X 80lb Injectors E85
1995 F150 5.8L MOB1

Re: 351W with broken rod

Unread post by efloth »

These are in my area. What do you think? How much better than stock are these?

https://www.ebay.com/itm/1987-1995-Ford ... 632-2357-0
decipha
Posts: 5034
Joined: 2021 Feb 15, 12:23
Location: Metairie, LA
Vehicle Information: Work Truck
'19 F-150 3.3L

Re: 351W with broken rod

Unread post by decipha »

garbage, no such thing as gt40p cobra heads either but way too over priced
efloth
Posts: 300
Joined: 2021 Feb 15, 22:12
Location: Sacramento CA
Vehicle Information: 1991 F150 4.9L J1X 80lb Injectors E85
1995 F150 5.8L MOB1

Re: 351W with broken rod

Unread post by efloth »

I'm not seeing anything cheaper than that. What new head would you recommend? Would be nice to keep pedestal mount rockers for simplicity. I'm not racing or anything.
decipha
Posts: 5034
Joined: 2021 Feb 15, 12:23
Location: Metairie, LA
Vehicle Information: Work Truck
'19 F-150 3.3L

Re: 351W with broken rod

Unread post by decipha »

I would recommend the RHS heads
red5.0fogger
Posts: 150
Joined: 2021 Mar 22, 15:58
Location: Newington CT
Vehicle Information: 1986 Mustang GT, Stock block, TFS 170 Heads , N41 cam, ported cobra intake, nitrous, T5 , 3.73s

Re: 351W with broken rod

Unread post by red5.0fogger »

You won't regret buying good quality cylinder heads. If you don't have boost or nitrous good heads are the only way the engine can breath. They make a huge difference. Going from the worst head (the 86) to a nice flowing head, the Trick flow 170 gave me 100 HP increase.
efloth
Posts: 300
Joined: 2021 Feb 15, 22:12
Location: Sacramento CA
Vehicle Information: 1991 F150 4.9L J1X 80lb Injectors E85
1995 F150 5.8L MOB1

Re: 351W with broken rod

Unread post by efloth »

Yeah, I can't see putting the motor back in without at least reworking the stock heads, which would cost about half as much as aftermarket heads. Being in California I have limited options though. The Edelbrock 50 state legal heads are not available but it looks like I could get a pair of afrs for around 2K. I didn't look extensively into trickflow but do they have emissions complaint heads?

Another curve ball is, after further inspection this camshaft has some pitting on one of the lobes. I believe the motor that I pulled out has a roller cam so I'm going to inspect that one hopefully it's good enough to use. If not it doesn't appear that cams are readily available right now.
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