70 350 bored 0.60 over

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Oct 3, 2021 | 12:18 AM

Cashby j

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3rd Gear

Joined: Oct 2021

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From: Lynnwood Washington

70 350 bored 0.60 over

I have a 70 block thats bored 0.60 over and I have 91 l98 heads what cam would be good with this application

Oct 3, 2021 | 12:19 PM

MelWff

Race Director

Joined: May 2006

Posts: 18,742

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Contact Competition Cams tech help
https://www.compcams.com/contact-us

Oct 3, 2021 | 01:06 PM

Jarhead 74 Vette

Pro

Joined: Oct 2020

Posts: 646

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From: Blairsville, Ga

Another great option would be to call Howard’s cams tech line (920) 233-5228.
They are very helpful!

Oct 3, 2021 | 01:28 PM

C3TPI

Instructor

Joined: Nov 2019

Posts: 221

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From: Kalispell, MT

Are you using the TPI system off of the L98 as well? Comp Cams grinds a hydraulic roller cam specifically for that application. You would need to convert your block to roller cam, however.

Oct 3, 2021 | 04:12 PM

ebbnflow

Pro

Joined: Jul 2021

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Is your 70 block already fitted with pistons ? Have you considered compression ratio ?

Oct 3, 2021 | 06:44 PM

riverracer au

Melting Slicks

Joined: Oct 2010

Posts: 2,276

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From: "ɹǝpunuʍop", Adelaide, South Australia

auto or manual?
if auto what stall convertor do you have or want?
diff ratio?
cruising on the street or racing round on a track or drag?

many things to consider when when choosing a cam, the wrong setup will be a dog to drive.....

Oct 4, 2021 | 10:10 PM

ratflinger

NCM Grand Opening Veteran

Joined: Sep 2005

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From: South of giving a damn

St. Jude Donor '11, '17

Quote:

Originally Posted by Cashby j

I have a 70 block thats bored 0.60 over and I have 91 l98 heads what cam would be good with this application

Round, because L98 heads are worth melting for beer cans.

Oct 5, 2021 | 07:11 PM

ebbnflow

Pro

Joined: Jul 2021

Posts: 719

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Well ...in addition to some C4s, Camaros, and Firebirds ... L98 heads were also OE on ZZ3 & ZZ4 & x603 crates; all 3 obsolete and discontinued.
True, they don't (& won't) flow much but their small 58cc chambers are good for raising dished motors' compression; that's about it!
Their chambers are Not Fastburn design. They're also both obsolete and discontinued.