78 Pontiac Lemans
- Thread starter BronzeLemans78
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Yep that's a SBC. Thanks for indulging us. I'm sure it was frustrating being told you were wrong. It's pretty common for people to have bad info or not actually know the motor they have. The 301 and 305 are commonly confused for a number of reasons. Not the least of which is the ever popular they are all the same. GM is GM argument. Which is true of every car manufacturer EXCEPT GM until the late 80s.
Is it a 2 or 4 BBL?
Is it a 2 or 4 BBL?
I didn't reread the entire thread, but I don't recall anyone saying BronzeLeMans was wrong.
That's true. Several people expressed doubt and I conflated that. I know I would have been frustrated with that so I offered an apology. Perhaps I was projecting but I erred on the side of caution
No worries. I would have probably questioned me, too. I usually do my research before I go spouting off, no offense taken.
As said do the cam with a mild upgrade, probably starting to go flat anyways if it hasn't been changed already. I believe the sbc also has the nylon tooth cam gear that should be changed anyways. Looks greasy, the front cover is a b*tch to do with the pan in place. Pan gaskets and main seals are probably leaking. That is probably a 2GC two barrel carb. I say 625 Street Demon and you have many intakes to choose from.
At least with Grand Ams, the majority of 78's that I've seen had the 2 barrel. Although my 78 four door has a 4 barrel, and an aluminum radiator support.
This is interesting to me to find a lemans sold new with a 305 out of the areas I would normally expect.
Yup, that's a 2GC carb. Last year they were used. You can tell by the choke flap. It is actually a very good carb and easy to work on. I would not change it. A hard lesson to learn is that they put 2 barrels on for very good reasons. With economy rear gears and small motors the 2 barrel works best.
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