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#1 |
Registered User
Join Date: Nov 2006
Location: Alpine,Texas
Posts: 129
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Several questions about engine in '68, looking for facts and opinions please.
I took the heads of the engine in my 68 which I was led to believe to be the original 307. The machine shop called me and told me the heads were for a 305 so this brought up a few questions.
1. Will any of the numbers on the block be able to tell me what engine I have? If so, which ones and can anyone on here decode them for me? 2. If it is the 307 with 305 heads would putting 305 heads on there be good bad or indifferent to the performance of the engine? 3. If it is the 307 I plan on keeping it mostly stock but if it is a 305 I was thinking of maybe putting a different intake manifold, a 4 barrel carb and different cam. I already have a pretty good exhaust so what would you recommend for the manifold, carb and and cam? Thanks alot for any help you might be able to provide. -Moneypit
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1968 Chevy C10 1967 Mustang 1976 Honda XL350 2006 Victory Vegas 8-Ball 2012 Ram 1500 4x4 |
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#2 |
Registered User
Join Date: Aug 2005
Location: mount airy n.c.
Posts: 243
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Re: Several questions about engine in '68, looking for facts and opinions please.
nastyz28.com or mortech.com has decoding info
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#3 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Several questions about engine in '68, looking for facts and opinions please.
The best thing you can do with a 305 is donate the heads to a 307. All joking aside, it is a great update for the 307. It isn't really performance oriented, but, they are better heads, and modern gas friendly.
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#4 |
The Older Generation
![]() ![]() ![]() Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,518
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Re: Several questions about engine in '68, looking for facts and opinions please.
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One of the numbers you want is on the back of the block (where the bellhousing or trans bolts on) on the drivers side. The other one would be just in front if the passengers side head and should be stamped into a flat machined boss on the block. Write them down and go here to look them up. http://www.mortec.com/castnum.htm LockDoc
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Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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#5 | |
Registered User
Join Date: Jul 2006
Location: Central PA
Posts: 12,201
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Re: Several questions about engine in '68, looking for facts and opinions please.
Quote:
just kidding since I have a 68 w/327 ![]()
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The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer" |
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#6 |
Registered User
Join Date: Nov 2006
Location: Alpine,Texas
Posts: 129
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Re: Several questions about engine in '68, looking for facts and opinions please.
I don't have internet at the house right now so I wrote down all the casting number for the 307's and 305's listed on both mortec.com and nastyz28.com. I will cross reference them when I get home. Thanks for that info.
If it is a 307 with 305 heads it seems this would be a good thing or is that wrong. Once again, thanks alot guys. -Moneypit
__________________
1968 Chevy C10 1967 Mustang 1976 Honda XL350 2006 Victory Vegas 8-Ball 2012 Ram 1500 4x4 |
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#7 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Several questions about engine in '68, looking for facts and opinions please.
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#8 |
Registered User
Join Date: Nov 2006
Location: Alpine,Texas
Posts: 129
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Re: Several questions about engine in '68, looking for facts and opinions please.
Ok, I went home and cleaned up the back of the block and found out I have an 80-85 305. So can anyone reccomend an intake, carb and cam for a mild build up. Not looking for anything fancy just a little more pickup. Maybe something in the $500 and down range(if that's possible). Thanks. -Moneypit
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1968 Chevy C10 1967 Mustang 1976 Honda XL350 2006 Victory Vegas 8-Ball 2012 Ram 1500 4x4 |
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