Found heads in new house.
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Found heads in new house.
I have found a set of heads in the house i just moved into. I cannot find any information on the casting number. 3870126. Seems to be from the 60's. Based on similat numbers I have found. Checked motech no luck. I am currently planning on an l05 build to put in my '89 ls. I just want to know if these heads are worth anything. They do seem to have bigger intake runners than the swirl ports. Any input?
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From: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
Re: Found heads in new house.
Do a search on Google for "casting 3870126" I found some information, apparently the heads are from a 1967.. first link.
John
John
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Joined: Jan 2008
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From: Austin TX
Car: 82 Z28
Engine: 305
Transmission: BW T-10
Axle/Gears: 3.23
Re: Found heads in new house.
My "standard catalog of Chevy casting #'s" does not show 3870126, but it does show
3970126 as as 69-72 350 truck and base passenger car. Measure the intake valves- most of them had small 1.72 valves, which are useless- if they have 1.94 valves, they are much more useable. You say you're building a L05, which is a truck TBI 350- is that so? IIRC, these heads have 74CC combustion chambers, which is WAY too big for a 305.
3970126 as as 69-72 350 truck and base passenger car. Measure the intake valves- most of them had small 1.72 valves, which are useless- if they have 1.94 valves, they are much more useable. You say you're building a L05, which is a truck TBI 350- is that so? IIRC, these heads have 74CC combustion chambers, which is WAY too big for a 305.
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Joined: Mar 2001
Posts: 14,298
Likes: 197
From: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
Re: Found heads in new house.
He stated LO5, which is the 350 version of the LO3... I suspect he is talking about something other than a Camaro because he mentions LS...
John
John
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