Weber 38 or holley truck avenger?
- Thread starter Buck hour
- Start date
are those my only two option? TBI injection is the way to go.
I know the truck avenger (380 cfm I think) will require either a offenhouser manifold or an adapter, not super sure if the weber is a spread bore 4 bbl carb. both run great at angles I would tend to the holley only because of the amount of current aftermarket technology and support for it.
I know the truck avenger (380 cfm I think) will require either a offenhouser manifold or an adapter, not super sure if the weber is a spread bore 4 bbl carb. both run great at angles I would tend to the holley only because of the amount of current aftermarket technology and support for it.
Saddle Tramp
New member
The difference is the amount of air/gas mixture the carb can feed the engine and the capacity of the carb needs to match the motor’s ability to digest fuel. The 470 CFM is the smallest of the three and the one you probably would want; even a stock AMC 304 can’t handle more than the 470 CFM without a cam upgrade. You will need to change the intake manifold or use an adaptor (not sure if one is made) to go with the Holley on your 258. One other choice is the Motorcraft 2100/2150 swap. They are plentiful in the bone yards and perform very well off camber. In fact the AMC 304 CJs came stock with them. If you are not comfortable rebuilding one yourself I’m sure you can pick up a rebuilt one at the parts shop. It use to be that most all carb rebuilds were being done by Holley regardless of brand, not sure if that is still the case but may very well be.
PS:
Sorry, just re-read your question. My bet is the price difference is based on the number of units sold. The 670 CFM is probably the most popular and biggest seller so the cost to manufacture and carry is less. It’s like barn red paint. In the old days if you asked the farmer why he painted his barn red he would tell you it was because red paint was the cheapest he could buy but when you asked the dry goods store owner why red paint was cheaper than the other colors he would tell you it was because he sold so darn much of it.
PS:
Sorry, just re-read your question. My bet is the price difference is based on the number of units sold. The 670 CFM is probably the most popular and biggest seller so the cost to manufacture and carry is less. It’s like barn red paint. In the old days if you asked the farmer why he painted his barn red he would tell you it was because red paint was the cheapest he could buy but when you asked the dry goods store owner why red paint was cheaper than the other colors he would tell you it was because he sold so darn much of it.
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unless you have highly modded a 258, stick with the 470 cfm. to correct, I typed 380 before, it should read 470.. fingers type faster than brain.
another benefit of the weber is that you can reuse all your stock linkages. I think you need a new throttle cable with the Holley, but I would still go with the holley
another benefit of the weber is that you can reuse all your stock linkages. I think you need a new throttle cable with the Holley, but I would still go with the holley
Saddle Tramp
New member
Well I’ve tried to not bash Weber as all seemed to be leaning to “not the Weber†but I can’t help but lay this out there before Buck spends his hard earned money. Weber carbs can be good or they can be bad. If you get one that is good right out of the box you are a winner but if you don’t, and it happens more often than you might think, you are screwed.
I bought a Weber for my 1989, 258 Wrangler. The butter fly valve was stuck shut when I opened the box and on the lid of the box it said “NO WARRANTY WHATSOEVERâ€. I called Weber anyway and *****ed about the butterfly valve as I didn’t want to be the one that buggered up an expensive piece hardware.; finally after much debate and “Not My Problem†from the tech I was speaking too he agreed to check it out if I spent the $20 to ship it back to them, which I did. I later called again to find out what the status was only to have the guy tell me that he didn’t understand my problem as all he did was “whack it with a screw driverâ€. (Gee, why didn’t I want to WHACK a delicate internment and hope for the best?) The thing never did work right and I ended up with an expensive door stop
Cavite Emptor! In my experience they mean that warranty thing.
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