Author Topic: 347 build for my 64.5 mustang  (Read 1735 times)

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blykins

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Re: 347 build for my 64.5 mustang
« Reply #30 on: April 30, 2022, 04:25:39 AM »
Depends on which block it is.  The Man O' War block is really heavy.  FRPP block is probably the lightest between what's offered now.  I just did a 363 with one but didn't weigh it.  That's another good reason to go with an aftermarket block....free cubes.   A 363 with AFR 185cc heads, Performer RPM Air Gap and a little 220-ish @ .050" hydraulic roller cam will make 500 hp.
Brent Lykins
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blykins

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Re: 347 build for my 64.5 mustang
« Reply #31 on: April 30, 2022, 07:26:59 AM »
FRPP 8.200" block:



World 8.200" block:

Brent Lykins
Lykins Motorsports
Custom FE Street, Drag Race, Road Race, and Pulling Truck Engines
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70tp

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Re: 347 build for my 64.5 mustang
« Reply #32 on: April 30, 2022, 11:18:53 AM »
Brent: when using the FRPP block with a 3.4” stroke , do you see any problems with the bottom of the cylinders being shorter than some of the other aftermarket blocks?  I’ve been told that the frpp blocks have too short of a cylinder skirt to be reliable long term or can have accelerated piston skirt wear. 

blykins

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Re: 347 build for my 64.5 mustang
« Reply #33 on: April 30, 2022, 11:42:22 AM »
Brent: when using the FRPP block with a 3.4” stroke , do you see any problems with the bottom of the cylinders being shorter than some of the other aftermarket blocks?  I’ve been told that the frpp blocks have too short of a cylinder skirt to be reliable long term or can have accelerated piston skirt wear.

No sir, haven't seen that.
Brent Lykins
Lykins Motorsports
Custom FE Street, Drag Race, Road Race, and Pulling Truck Engines
Custom Roller & Flat Tappet Camshafts
www.lykinsmotorsports.com
brent@lykinsmotorsports.com
www.customfordcams.com
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Stangman

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Re: 347 build for my 64.5 mustang
« Reply #34 on: April 30, 2022, 02:15:24 PM »
Looks like more clamping force for heads in the world block and more cooling for the FRPP. Do you have a preference.

blykins

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Re: 347 build for my 64.5 mustang
« Reply #35 on: April 30, 2022, 02:22:26 PM »
There's only one head that will bolt up using all the bolt holes on the World block and it's not a head to write home about. 

Cooling has never been an issue, so I can't really say that the bigger holes are a plus. 

One thing I don't like about the FRPP block is that the caps aren't billet and the bolts are just regular bolts (not like ARP).   Now granted, I've made 800 hp with the 9.200" deck BOSS block, so it must not be an issue, but it just doesn't look as professional as the Dart and World blocks. 

FWIW, I haven't seen a Dart block in so long, I've forgotten what they look like.  They haven't been available in about 2 years.
Brent Lykins
Lykins Motorsports
Custom FE Street, Drag Race, Road Race, and Pulling Truck Engines
Custom Roller & Flat Tappet Camshafts
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www.customfordcams.com
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Heo

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Re: 347 build for my 64.5 mustang
« Reply #36 on: May 14, 2022, 04:59:43 PM »
There's only one head that will bolt up using all the bolt holes on the World block and it's not a head to write home about. 

Cooling has never been an issue, so I can't really say that the bigger holes are a plus. 

One thing I don't like about the FRPP block is that the caps aren't billet and the bolts are just regular bolts (not like ARP).   Now granted, I've made 800 hp with the 9.200" deck BOSS block, so it must not be an issue, but it just doesn't look as professional as the Dart and World blocks. 

FWIW, I haven't seen a Dart block in so long, I've forgotten what they look like.  They haven't been available in about 2 years.

On my way home now and i stopped over in Stockholm at may friend Ollie. He had just recieved a new Dart block out of the new castings
it was a beauty with realy thick cyl walls.But he have waited one and a half year. Got pics i can download tomorrow



The defenition of a Gentleman, is a man that can play the accordion.But dont do it

Rory428

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Re: 347 build for my 64.5 mustang
« Reply #37 on: May 14, 2022, 11:15:23 PM »
I weighed both my SBF 331, which used a 1973 production block, and my Dart blocked 347, and the 347 was 35 pounds heavier. Be aware, that these were complete carb to pan engines, and in addition to the differences between the 2 blocks, there were some other pieces that were different between the 2 engines. The 331 had a cast crank, stock timing cover and water pump (aluminum 5.0 Mustang pump), Victor Jr. intake and Comp steel roller rockers, where the 347 has a steel crank, a Jesel timing belt drive and Meziere electric water pump, and a Parker Funnel Web intake and Crower aluminum shaft rockers. Not sure how much lighter the production 5.0 hyd roller blocks were than the early 70s 302 blocks, after the roller block broke, I went with a 73 block, I never compared the weights of the roller block to the 73 block.
1978 Fairmont,FE 427 with 428 crank, 4 speed Jerico best of 9.972@132.54MPH 1.29 60 foot
1985 Mustang HB 331 SB Ford, 4 speed Jerico, best of 10.29@128 MPH 1.40 60 foot.
1974 F350 race car hauler 390 NP435 4 speed
1959 Ford Meteor 2 dr sedan. 428 Cobra Jet, 4 speed Toploader.

Heo

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Re: 347 build for my 64.5 mustang
« Reply #38 on: May 15, 2022, 12:53:45 AM »
Darts new "302" block




The defenition of a Gentleman, is a man that can play the accordion.But dont do it

machoneman

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Re: 347 build for my 64.5 mustang
« Reply #39 on: May 16, 2022, 07:15:53 AM »
I weighed both my SBF 331, which used a 1973 production block, and my Dart blocked 347, and the 347 was 35 pounds heavier. Be aware, that these were complete carb to pan engines, and in addition to the differences between the 2 blocks, there were some other pieces that were different between the 2 engines. The 331 had a cast crank, stock timing cover and water pump (aluminum 5.0 Mustang pump), Victor Jr. intake and Comp steel roller rockers, where the 347 has a steel crank, a Jesel timing belt drive and Meziere electric water pump, and a Parker Funnel Web intake and Crower aluminum shaft rockers. Not sure how much lighter the production 5.0 hyd roller blocks were than the early 70s 302 blocks, after the roller block broke, I went with a 73 block, I never compared the weights of the roller block to the 73 block.

I went back to look at the old 'Net 54 site for block weights. Our own Falcon67 stated (way back in 2006!) that a D2 1974 W block weighed 165 lbs. with caps, cam bearings and freeze plugs.
Bob Maag

Rory428

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Re: 347 build for my 64.5 mustang
« Reply #40 on: May 16, 2022, 09:13:08 PM »
Pretty sure the extra deck height of a 351W block would make it a fair bit heavier than a 302 block.
1978 Fairmont,FE 427 with 428 crank, 4 speed Jerico best of 9.972@132.54MPH 1.29 60 foot
1985 Mustang HB 331 SB Ford, 4 speed Jerico, best of 10.29@128 MPH 1.40 60 foot.
1974 F350 race car hauler 390 NP435 4 speed
1959 Ford Meteor 2 dr sedan. 428 Cobra Jet, 4 speed Toploader.