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Topic: So I took the 351 apart today, and got a surprise... (Read 2149 times) previous topic - next topic

So I took the 351 apart today, and got a surprise...

Reply #15 –
Quote from: Thunder Chicken;149952

So what would be the difference between an F2 and an E7 block?


I honestly don't know, but other than casting numbers I doubt anything... The F2, is likely just cast with newer cores, before the switch to roller... The late '93 Lightnings(and '94-'95) are reported to have the F4 block... Mine is a fairly early '93 built in Jan...

I dunno why they continued with the conventional cam in the Lightnings, maybe Ford would have had to re-certify the emissions??? Probably not worth the cost on a low volume vehicle... There were only something like 11,200 total built for the three years of prod...

BTW the first generation Lightnings also were all speed densety EEC-IV...Guessing again, I suspect that is why there was no '96 models as OBD-II was now mandatory...

So I took the 351 apart today, and got a surprise...

Reply #16 –
My engine will be open for a new home when I get the 5.8.I take good care of it,still looks clean when the valve covers are pulled.It'll need an upper intake.I'll be using my polished Explorer upper on the 5.8.The BBK's,and ported heads will stay with the engine.I'll be looking for the replacement engine this fall.As far as installing,a little longer.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

So I took the 351 apart today, and got a surprise...

Reply #17 –
eh when ever just as long as i know where to find one when this v6goes south on me.
 

So I took the 351 apart today, and got a surprise...

Reply #18 –
Quote from: Thunder Chicken;148539
I knew the F4 block was a roller block, but everyone had been telling me that even though it's a roller block, it would not have a roller cam. I was told that the lifter valley would be machined for the dogbones and spider, but that the engine would have simple flat tappets.

WRONGO! Imagine my surprise when I popped the intake manifold off and saw the spider, the dogbones, and yes, I do believe those are roller lifters!



Actually, I verified that they are roller lifters by pulling one out after taking the heads off, but my hands were too dirty to handle the camera.

I also got another nice surprise: This engine is in remarkably good condition considering it's got over 400,000 km on it (about 250k miles). The cross hatches are still visible in the bores, and there was very little sludge in the heads and lifter valley. I haven't taken the oil pan off yet, so I don't know what kind of shape the crank is in, but it's starting to look like this might be a fairly cheap engine to build (yes, I know the stock pistons are cast, but they should serve my purpose nicely if they're in good shape).



Sweet!! You now have a lot of nice choices in roller cams you can use - there are so many good ones.

When I rebuilt my 306 2 years ago, I found out that the one of the bores was egg-shaped after the top of the piston broke off and wedged against the head - thus slapping the skirt HARD into the cylinder wall. Well, I nabbed a block from an old Lincoln and sure enough, the bosses for the spider hold-down were not even tapped. The guy who bored the block took like 10 minutes to tap them for me, but it verified for me that many of the roller engines had flat-tappet cams in them. You must be quite pleased at this point :D
11.96 @ 118 MPH old 306 KB; 428W coming soon.