428 cj - Page 3

hehhehmule · 08-28-2000, 06:23 PM

Holy cripes! What a blast from the past.

les1 · 08-29-2000, 08:29 PM

hey he hemule my 428 has cross bolts and cap bolts do you have a cj?

kdog · 09-02-2000, 11:36 AM

les1, you must have one incredibly rare block! I've been an FE fan for many years and have never seen nor heard of a cross bolted 428.
Also, in one of the first posts, someone talks about low or medium riser heads on a 428CJ - I believe they were neither as the CJ had its OWN head with its own specs and two exhaust bolt patterns.

Gearhead999 · 09-02-2000, 04:29 PM

I agree with kdog. 428cj didn't have crossbolts. Only FE's I know of was the 406 and 427.

Also, only one head, not low, medium, high riser either.

On 68 1/2 it had a casting number between plugs with an "N" in it. Don't remember all the rest of the casting numbers, sorry.

hehhehmule · 09-04-2000, 02:02 PM

Agreed, a crossbolted 428 should be worth its weight in gold. As for the heads, I believe they have the same valve and port sizes as the low riser, that's what I referred to earlier. If this is incorrect feel free to correct me, I screw up all the time.

Unit 5302 · 09-05-2000, 12:11 AM

Well, my Uncle just rolled the Boss into the shed until winter when he can dig into the motor.

He found metal shavings in his oil filter but none in the pan, and along with a slight drop in oil pressure, he's hoping that leads to a faulty oil pump.

I guess it'll be a while before he'll be able to get it to the track.

Maybe I can coax him into getting the Mach 1 out there to get some times from it?

Later,
Unit 5302.

09-08-2000, 12:42 AM

Just to add to this conversation:
Cars before '72 were rated Gross horsepower which is without full exhaust on an engine dyno with no accessories, in '72 it was changed to SAE (society of Automotive engineers) NET, which is with the engine installed in the vehicle, full exhaust and accessories and at the tail end of the transmission. This makes a big difference in accuracy of ratings. To mix this all up some of you guys were comparing horsepower at the wheels as well, not to mention the fact that a C6 on the 428 eats up a lot of power. The new Firebird WS6 ram air was found to have 320 horsepower at the rear wheels (NET rated at like 325 by GM), which is amazing and the new mustang Cobra had around 320 advertised horsepower and the rear wheel horsepower came around closer to 250. I stopped looking at power ratings along time ago, now i just pay attention to 1/4 mile times, you can't bullshit a good timeslip.

08-28-2000, 06:23 PM	#41
hehhehmule Registered Member Join Date: Sep 1998 Location: Nashville TN Posts: 608	Holy cripes! What a blast from the past.

08-29-2000, 08:29 PM	#42
les1 Registered Member Join Date: Mar 1999 Location: seattle Posts: 76	hey he hemule my 428 has cross bolts and cap bolts do you have a cj?

09-02-2000, 11:36 AM	#43
kdog Registered Member Join Date: May 2000 Location: Abilene, TX Posts: 70	les1, you must have one incredibly rare block! I've been an FE fan for many years and have never seen nor heard of a cross bolted 428. Also, in one of the first posts, someone talks about low or medium riser heads on a 428CJ - I believe they were neither as the CJ had its OWN head with its own specs and two exhaust bolt patterns.

09-02-2000, 04:29 PM	#44
Gearhead999 Registered Member Join Date: Sep 1998 Location: Oviedo, FL Posts: 992	I agree with kdog. 428cj didn't have crossbolts. Only FE's I know of was the 406 and 427. Also, only one head, not low, medium, high riser either. On 68 1/2 it had a casting number between plugs with an "N" in it. Don't remember all the rest of the casting numbers, sorry.

09-04-2000, 02:02 PM	#45
hehhehmule Registered Member Join Date: Sep 1998 Location: Nashville TN Posts: 608	Agreed, a crossbolted 428 should be worth its weight in gold. As for the heads, I believe they have the same valve and port sizes as the low riser, that's what I referred to earlier. If this is incorrect feel free to correct me, I screw up all the time.

09-05-2000, 12:11 AM	#46
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	Well, my Uncle just rolled the Boss into the shed until winter when he can dig into the motor. He found metal shavings in his oil filter but none in the pan, and along with a slight drop in oil pressure, he's hoping that leads to a faulty oil pump. I guess it'll be a while before he'll be able to get it to the track. Maybe I can coax him into getting the Mach 1 out there to get some times from it? Later, Unit 5302.

09-08-2000, 12:42 AM	#47
84stang83zephyr Guest Posts: n/a	Just to add to this conversation: Cars before '72 were rated Gross horsepower which is without full exhaust on an engine dyno with no accessories, in '72 it was changed to SAE (society of Automotive engineers) NET, which is with the engine installed in the vehicle, full exhaust and accessories and at the tail end of the transmission. This makes a big difference in accuracy of ratings. To mix this all up some of you guys were comparing horsepower at the wheels as well, not to mention the fact that a C6 on the 428 eats up a lot of power. The new Firebird WS6 ram air was found to have 320 horsepower at the rear wheels (NET rated at like 325 by GM), which is amazing and the new mustang Cobra had around 320 advertised horsepower and the rear wheel horsepower came around closer to 250. I stopped looking at power ratings along time ago, now i just pay attention to 1/4 mile times, you can't bullshit a good timeslip.