needing some advice
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
I did have a some porting work done - CJ-sized exhaust valves, and a bit of hogging out the exhaust ports, especially the air injection boss bumps in the port itself.
I think you're going to be fine.
As for the 2bbl thing, sure, but ... why?
I think you're going to be fine.
As for the 2bbl thing, sure, but ... why?
Cargo Master
Joined: Dec 2015
Posts: 2,545
Likes: 324
From: Harned, Ky
How much gas that 750 uses is how you use your right foot, if you don't mash it to the floor the four barrel wont open.
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Joined: Oct 2016
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I wont never know if I can't get this thing tuned right, I been having hell with it, I'm starting to regret this thumpr cam already.. A buddy told about this thumpr cams being really picky with the tune, if I advance the timing any more than where its at, it wont crank when warm and if I advance it with the engine running the idle gets really smooth and you can hardly hear the cam, so the timing Is retarded quite a bit
Cargo Master
Joined: Dec 2015
Posts: 2,545
Likes: 324
From: Harned, Ky
No bigger than that cam is you should be able to set the base timing around 9-12 degrees, I've ran some large super stock style cams didn't take over 16 degrees base timing to get them running properly.
If it takes a lot of timing to get it running properly you need to recheck the timing chain to make sure it not off a tooth.
Worked on a friends 351 years ago, it wouldn't idle below 32 degrees timing, cam timing was off a tooth.
If it takes a lot of timing to get it running properly you need to recheck the timing chain to make sure it not off a tooth.
Worked on a friends 351 years ago, it wouldn't idle below 32 degrees timing, cam timing was off a tooth.
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Freshman User
Joined: Oct 2016
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Everything is set right, when the motor is running, I can put enough timing in it to where it will die and ditto for retarding it, its pulling about 8-9 1/2 inches of vacuum but if I advance it any more even just a hair theres way to much cranking pressure and the starter wont turn the motor over
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