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Forum: 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Yesterday, 07:51 PM
Replies: 171
Views: 4,311
Posted By matthewq4b
OK let assume the worst 5CC's for the pistons and...

OK let assume the worst 5CC's for the pistons and 65 CC's for the chambers

No decking

4.03" bore 0.27" thick head gaskets 8.86:1 CR

4.01" bore and 0.021" thick copper head gaskets 8.999:1...
Forum: 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Yesterday, 07:36 PM
Replies: 171
Views: 4,311
Posted By matthewq4b
The D8 Heads are 67- to 70-cc chambers. I...

The D8 Heads are 67- to 70-cc chambers.

I used the CR formula for calculating the CR with the GT 40 heads. And a 0.021: head gasket thickness (I really should have used .027") as copper head...
Forum: 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Yesterday, 05:24 PM
Replies: 171
Views: 4,311
Posted By matthewq4b
As stands with the stock pistons and bore and...

As stands with the stock pistons and bore and stoke and 65CC chambers you should be about 9:1-9.4:1 with a 0.21" compressed head gasket thickness.

If you CC the valve reliefs in the piston I can...
Forum: 1947 and Older Ford Trucks Yesterday, 04:16 PM
Replies: 1,852
Views: 117,644
Posted By matthewq4b
it's either 32 or 37

it's either 32 or 37
Forum: 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Yesterday, 02:06 PM
Replies: 171
Views: 4,311
Posted By matthewq4b
It is not so much bore diameter but piston skirt...

It is not so much bore diameter but piston skirt to bore clearance. If it exceeds 0.007" you should rebore and replace the pistons. Given that your engine is still basically the stock bore...
Forum: 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 02-23-2018, 01:35 PM
Replies: 26
Views: 575
Posted By matthewq4b
You've been lucky and could be the conditions you...

You've been lucky and could be the conditions you encounter also.


I have had lockers and limited slips give you white knuckle experiences.
This is most noticeable on black ice which is fairly...
Forum: 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 02-23-2018, 03:56 AM
Replies: 7
Views: 194
Posted By matthewq4b
This almostcertainly a fuel delivery problem ...

This almostcertainly a fuel delivery problem Either fuel pump capacity a restriction in the carb, or fuel lines.

Test the Fuel capacity at the carb first. And if it checks out ok then it is an...
Forum: 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 02-23-2018, 01:57 AM
Replies: 26
Views: 575
Posted By matthewq4b
The modern Detroit lockers are not as obnoxious...

The modern Detroit lockers are not as obnoxious as the older ones and are much quieter.
With the 6.9 in the truck you likely wont even hear it. I have several 80's era diesel trucks with Detroit...
Forum: 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 02-22-2018, 08:37 PM
Replies: 171
Views: 4,311
Posted By matthewq4b
The Edelbrock Performer SBF intakes have 2...

The Edelbrock Performer SBF intakes have 2 threaded ports in the intake coolant crossover. And an additional boss cast in the cross over that could be drilled and pipe tapped for a third port.....
Forum: 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 02-22-2018, 12:09 AM
Replies: 171
Views: 4,311
Posted By matthewq4b
Nice looking set of heads, it will be...

Nice looking set of heads, it will be interesting to see what they CC out at.
Forum: 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 02-20-2018, 07:38 PM
Replies: 171
Views: 4,311
Posted By matthewq4b
Just install them in the block first. The dowels...

Just install them in the block first. The dowels are there to help align the harmonic balancer seal if you speed sleeve the balancer you will have a little variation to play with.

There is tool...
Forum: 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 02-20-2018, 07:34 PM
Replies: 55
Views: 1,439
Posted By matthewq4b
Easier for most us to track if it is one thread...

Easier for most us to track if it is one thread and you can see the progress with out jumping all over the forum. But ultimately it is up to you.
Forum: 1957 - 1960 F100 & Larger F-Series Trucks 02-19-2018, 01:30 PM
Replies: 15
Views: 570
Posted By matthewq4b
That a small block chev (SBC) sitting in there....

That a small block chev (SBC) sitting in there. So the tranny is likely a GM product as well.
Forum: 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 02-18-2018, 02:49 PM
Replies: 55
Views: 1,439
Posted By matthewq4b
I'm not joking about no driving this truck. If...

I'm not joking about no driving this truck. If you are in the states there is an expected " duty of care" when driving a vehicle on public roads. In short you are responsible to have your vehicle in...
Forum: 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 02-18-2018, 02:37 PM
Replies: 171
Views: 4,311
Posted By matthewq4b
Ya I never understood why one would do this I...

Ya I never understood why one would do this I can't think of a single application where this would be a benefit in a DSII system. Add the MSD and add bunch of wiring. All it does is complicated the...
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