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Author Topic:   882 (350) Heads on to a 400 block
GatorRacing
Member
posted February 28, 2002 06:21 PM
I have a 400 Chevy S.B. that is being turned to a 406 for Street Stock/Sportsman classes. The heads are cracked. I was told that my 882 Chevy heads would work on the 400 as long as steam holes are drilled. Is this true? Any power diferences by using the 350 heads? any advice on this subject?


sdhnc29
Member
posted February 28, 2002 06:40 PM
Yes , the 882's would work fine . But they are a large chamber head , and would limit your compression ratio . A smaller 64cc head would increase your compression , and ultimately produce more power .

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Hendren Racing Engines
Rutherfordton , NC
(828)286-0780


GatorRacing
Member
posted February 28, 2002 07:00 PM
I want to run 74-76 cc, 10.1 compression on Turbo Blue fuel, duration 294/298,.....I also have a 358 in last years car, it has 350 (2.02) heads i believe. Which one is better for performance?


sdhnc29
Member
posted February 28, 2002 08:58 PM
That's a tuff call without knowing your rule's , track size and how tacky it is , weight of your car , etc. I've built 355's that will run circles around 400's in certain application's .

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Hendren Racing Engines
Rutherfordton , NC
(828)286-0780


GatorRacing
Member
posted February 28, 2002 10:06 PM
Our rules are as follows: stock motors, No MSD boxes, headers optional, Aluminum intakes allowed (no open plenium intakes), Flat tappet cams-stock rocker arms only, 4 bbl. carbs (No full race carbs), Turbo Blue fuel, Racing shocks allowed, weights jacks allowed...I run a 86' olds cutlass/ 79' Z28 camaro.

weights: 3000 min with driver

Track size and surface: 1/5 mile high banked dirt/clay, 3/8 yellow clay

Tackiness: varies (Race tires allowed)
Hoosier w/ beadlocks on RR.

we have NO ENGINE CLAIM

sdhnc29
Member
posted February 28, 2002 10:59 PM
I'd go with the 406 . But I'd shoot for a little higher compression than 10:1 . On short banked tracks , with a heavy car , I don't think there is a substitution for cubic inch . At 10:1 , you will be able to run you 400 for a long time with no problem . The only thing is , a good 355 with about 13:1 compression and the right cam , might be hard to handle . I'd get your 400 up close to 12 or 13:1 if you can . You would be shocked at the HP and torque you will gain over 10:1 .

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Hendren Racing Engines
Rutherfordton , NC
(828)286-0780


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