427 SBF

[BOSS#1540]

Not at all, but when I said "as painful as it is", I was talking about us, not you.

This is the true reason why I run 1970 Clevelands with factory brackets , lol. The KISS method.
And I've still had belts flip upside down and run on the edge of the pulley at over 7000 rpm .
I sure hope my rollmaster doesn't cause any issues

 

[Patriot Racer]

This is the true reason why I run 1970 Clevelands with factory brackets , lol. The KISS method.
And I've still had belts flip upside down and run on the edge of the pulley at over 7000 rpm .
I sure hope my rollmaster doesn't cause any issues

I've used the rollmaster timing sets on at least 3 engines now. No issues. 89 is a magnet for this stuff. My 427 that I have now was installed by the builder. I had him install the cam. I don't have a degree wheel, so rather than spend the money on buying the tools, I gave him the money to do it. Point is, I don't know whether he had any issues or not. If he did, he likely would have charged more, but he never said anything, so....

 

[89 Fox 427]

Did you figure out why the original chain didn't have end play, then did have end play ?

Jesus Christ i know this thread is a fucking shit show but the original set does not have end play and gears line up.

New sets have end play and gears don't line up

 

[89 Fox 427]

Unrelated to the build while being competely relevant to the build.

I broke a countersink in a 2x4. I'm truly unsure if God hates me

 

[BOSS#1540]

I've used the rollmaster timing sets on at least 3 engines now. No issues. 89 is a magnet for this stuff. My 427 that I have now was installed by the builder. I had him install the cam. I don't have a degree wheel, so rather than spend the money on buying the tools, I gave him the money to do it. Point is, I don't know whether he had any issues or not. If he did, he likely would have charged more, but he never said anything, so....

I can have magnet like qualities at times also, lol.
Good to hear.

 

[BOSS#1540]

Jesus Christ i know this thread is a fucking shit show but the original set does not have end play and gears line up.

New sets have end play and gears don't line up

Ok.
I was sure you said you put one set on and it had no end play but then you re-did it and found the issue.

 

[Steve439]

Getcha one of these with your next McMaster order.
They are monsters.

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

 

[89 Fox 427]

Fuck that.. I know what I'm buying next

 

[89 Fox 427]

"And he so whoevereth has not faith in me shall suffer the luck of the poopoo until ye readeth the scripture"

Eclitorus 3:16

 

[Steve439]

Oh great, now you've mocked the Bible!

Here come the locusts.

 

[Mike Beck]

"And he so whoevereth has not faith in me shall suffer the luck of the poopoo until ye readeth the scripture"

Eclitorus 3:16

He who fails to perform the required LS-Swap shall suffer the heat of hell for eternity..........

Hey, at least you are here showing us all that you are trying, you are learning, and you are suffering with this bullshit hobby that has inflicted many of us!

 

[89 Fox 427]

Engine dyno is being torn down after they dyno the last engine tomorrow.. so either way I have roughly 3 weeks to wait to get on a brand new dyno to be disappointed.

While buying parts I was told 650hp.

My WAG is more like 570hp unless there's some voodoo in the parts I have

 

[Mike Beck]

Engine dyno is being torn down after they dyno the last engine tomorrow.. so either way I have roughly 3 weeks to wait to get on a brand new dyno to be disappointed.

While buying parts I was told 650hp.

My WAG is more like 570hp unless there's some voodoo in the parts I have

What do the heads flow? What is the compression ratio?

 

[Mister3]

Engine dyno is being torn down after they dyno the last engine tomorrow.. so either way I have roughly 3 weeks to wait to get on a brand new dyno to be disappointed.

While buying parts I was told 650hp.

My WAG is more like 570hp unless there's some voodoo in the parts I have

I can make that with a 4cyl without breaking a sweat.... jeeze

 

[89 Fox 427]

What do the heads flow? What is the compression ratio?

10.4 compression

The advertised flow numbers are a lot higher than what was produced in real life. Real life numbers below, taken from a youtube video:

Intake
141 @ .200
195 @ .300
246 @ .400
274 @ .500
295 @ .600
304 @ .700

Exhaust
113 @ .200
159 @ .300
188 @ .400
202 @ .500
208 @ .600
210 @ .700


Advertised flow is 5-10% higher than that. I'll be honest, I'm not happy about purchasing them, even for the cheap ass price. I should have bought better shit. I took words like "pretty good heads" and "best as cast heads you can buy" and didn't research much beyond looking at advertised numbers

 

[Patriot Racer]

For comparison, here are flow numbers for SBF AFR 220’s

 

[Low & slow]

Ma

10.4 compression

The advertised flow numbers are a lot higher than what was produced in real life. Real life numbers below, taken from a youtube video:

Intake
141 @ .200
195 @ .300
246 @ .400
274 @ .500
295 @ .600
304 @ .700

Exhaust
113 @ .200
159 @ .300
188 @ .400
202 @ .500
208 @ .600
210 @ .700


Advertised flow is 5-10% higher than that. I'll be honest, I'm not happy about purchasing them, even for the cheap ass price. I should have bought better shit. I took words like "pretty good heads" and "best as cast heads you can buy" and didn't research much beyond looking at advertised numbers

Man , I think your gunna have a dam good performing engine for a street car , at least get it running before you criticize it

 

[Steve439]

10.4 compression

The advertised flow numbers are a lot higher than what was produced in real life. Real life numbers below, taken from a youtube video:

I thought you said the exhaust ratio was around 80%?
I could be thinking of something else.

Those numbers make me the think the split in your cam is pretty reasonable, although I don't know if an SBF reacts the same as a BBC.

 

[Patriot Racer]

I thought you said the exhaust ratio was around 80%?
I could be thinking of something else.

Those numbers make me the think the split in your cam is pretty reasonable, although I don't know if an SBF reacts the same as a BBC.

Maybe just word vomiting, but the first thing that popped in my head when I read that was, it’s just an air pump. Meaning I think it will react the same.

I also learned not to get caught up in the dyno numbers. We used to call it the heartbreak machine. The acceleration from A to B is going to be ridiculous if it can keep traction.

 

[89 Fox 427]

I thought you said the exhaust ratio was around 80%?
I could be thinking of something else.

Those numbers make me the think the split in your cam is pretty reasonable, although I don't know if an SBF reacts the same as a BBC.

I used advertised numbers. For instance, the advertised flow at .500 lift is 293int 236ex