[Bear8282]

I’m installing a Comp Cam CL34-227-4 High Energy with hydraulic flat tappet lifters. Summit specs say that aftermarket valve springs are required for optimal performance, but many people I know as well as some reviews say that the stock springs worked for them. I’m wondering whether or not I actually need to get the new springs or not, and if I do, will I need to buy spring retainers as well.
It’s a 1991 F250 460 4 speed automatic w/ OD. Stock heads and intake and bore specs. Any help is appreciated.

 

[klork]

The stock springs are old and probably worn out anyways. I would replace them just on principle.

 

[ew1989]

I just bought the same cam. Should be coming today.

 

[Bear8282]

Kinda figured, just wasn’t sure cause the cam had already arrived and I didn’t wanna wait any longer if I didn’t need to.

 

[Bear8282]

I just bought the same cam. Should be coming today.

Awesome! I like what I’ve seen about it so far, I’m just hoping the performance meets the expectations. Hope you enjoy it!

 

[The Mad Porter]

Single pattern cam is inappropriate for a BBF.

Not a good choice if running factory EFI.

Use new springs with the cam. OEM springs are too light and likely worn out if original.







Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
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(253)-988-6648
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[FoMoCo]

It is well known 385's like dual pattern profiles so why so many single patterns on the market?

 

[Werecow]

Sales.....

 

[FoMoCo]

Well yes sales are a given. As a manufacurer I would not make what people don't want which leaves consumer ignorance as the driving force behind the sales. Sorry about the tangent from the original post.

 

[Werecow]

Thanks for clarifying what I intended!