427 SBF

[Patriot Racer]

Mind as well but a spring mic and measure the right way.

 

[89 Fox 427]

Spring shims are cheap enough.

And the locks hanging out of the bottom of the retainers?

 

[Steve439]

Why would any manufacturer use them knowing this?

At 1.84 installed height it puts me at 125lbs on the seat. Mark wanted to see closer to 155lbs. These springs are 145lbs @ 1.80 with the stamped locks

With a good roller 155 sounds good, I wouldn't even think about 125.

 

[WillisonTfosdik]

And the locks hanging out of the bottom of the

And the locks hanging out of the bottom of the retainers?

Throw that cheap stuff in the round file please. There’s too much at stake to be using cheap stuff. The risk to reward is not favorable for the $$.


Like Steeb mentioned earlier, buy the correct Comp tool steel retainers.

I run them at 600+ over the nose & they’re bulletproof.


Or blame the trip through the crowd at cars & coffee on a dropped valve. lol

 

[89 Fox 427]

Throw that cheap stuff in the round file please. There’s too much at stake to be using cheap stuff. The risk to reward is not favorable for the $$.


Like Steeb mentioned earlier, buy the correct Comp tool steel retainers.

I run them at 600+ over the nose & they’re bulletproof.


Or blame the trip through the crowd at cars & coffee on a dropped valve. lol

Buying retainers likely won't solve the installed height, is that what I should be expecting and still need shims?

 

[Steve439]

Buying retainers likely won't solve the installed height, is that what I should be expecting and still need shims?

Like I said earlier, it might be a brand mismatch.
The Comp locks might be a slightly smaller diameter and drop down too far in the other brand retainer.

 

[89 Fox 427]

I'm not spending 250 fucking dollars on retainers. I'll buy the afr heads before I keep pissing money down the fucking drain.

Hey @Mark O'Neal any suggestions here?

 

[Steve439]

See post 1513

 

[WillisonTfosdik]

Buying retainers likely won't solve the installed height, is that what I should be expecting and still need shims?

It’s normally tedious to get the installed height & pressures where you want them. Different locks, retainers & shims/locators are all part of getting there. Sometimes you can’t get there & need longer valves & different springs & hafta start all over again.

Spring setup with quality components is right next to bearing clearances as far as longevity.

Shortcutting quality & correctness for $250 is not something I recommend.

 

[89 Fox 427]

See post 1513

1.240 od
.860 step
11/32 valves

The retainer od is smaller than my spring OD. The spring is 1.300 od

 

[Steve439]

Ah shit, I don't have a dual spring retainer that small in OD.
Damn, I was hoping it would work...

 

[89 Fox 427]

Why would the retainer be smaller than the spring? Is this some other piece of shit decision by promaxx to save a dollar and these heads should never be suggested to anyone?

 

[WillisonTfosdik]

Why would the retainer be smaller than the spring? Is this some other piece of shit decision by promaxx to save a dollar and these heads should never be suggested to anyone?

I don’t know why but that’s the way they are.
I buy everything from Comp in one order…springs, locks, retainers, locators, pushrods, cam & lifters & that’s how they come.

 

[89 Fox 427]

@BOSS#1540 fyi the lsm sc-800 tool is absolutely great and worth every dime.

 

[Steve439]

Why would the retainer be smaller than the spring? Is this some other piece of shit decision by promaxx to save a dollar and these heads should never be suggested to anyone?

That's normal.

 

[Steve439]

A little bit of comic relief...

I'm practicing my MIG, wearing gym shoes, and I burned the fuck out of one of my toes.

 

[CompNut]

Just buy the damn AFR heads and be done with it, we all know that's what you really want.

 

[KwiknFast]

A little bit of comic relief...

I'm practicing my MIG, wearing gym shoes, and I burned the fuck out of one of my toes.

Well that's better than having a spark go down in your pants pocket.

 

[BOSS#1540]

@BOSS#1540 fyi the lsm sc-800 tool is absolutely great and worth every dime.

That's good to hear. I believe that was patriot and or mike beck that mentioned the 800. I was talking about the 2000 for a bench tool for heavy springs, long reach and it also prevents the valve from dropping.

 

[Mike Beck]

I don’t know why but that’s the way they are.
I buy everything from Comp in one order…springs, locks, retainers, locators, pushrods, cam & lifters & that’s how they come.

I do the same with PAC.