yetchh Posted June 15, 2021 Share Posted June 15, 2021 Standard crank would handle 75-8k.. Quote Link to comment Share on other sites More sharing options...
cletus Posted June 15, 2021 Share Posted June 15, 2021 You can use a too big carb and it might go ok at high rpm but it will be costing efficiency for normal driving IMO it is better to size the carb for how you do 95% of your driving. Ie if you spend 95% of the time tootling around town /at the speed limit then theres no point putting a race spec carb on that doesnt work well at low air speed situations The 318 in my vg has a 500cfm carb on it and runs exactly the same 1/4 times as one I had 20+ years ago that had a bigger cam , single plane manifold and a 650dp And it runs much more efficiently 5 Quote Link to comment Share on other sites More sharing options...
Bearded Baldy Posted June 15, 2021 Author Share Posted June 15, 2021 Pretty much bang on there Cletus. Which is why i have gone for a vac sec instead of mech, aswell as the fact it cost a box of beers. I live 25km out of town so the 600 should give decent economy when cruising the open road while still giving enough fuel when enjoying a thrashing on the backroads. The 2 barrel 500 Holleys were designed for speedway cars as far as i know, fuel economy is not a factor for them nor is low rev driveability. If it was a 4barrel 500 i had on the car i would keep it, but it isn't. Had a 350 on it with the smaller cam and was a good match with the overall setup, couldn't supply enough air up top with the bigger cam. The 500 is better but still not right. Now the fact that a 2bbl 500 carb only flows 354cfm in 4bbl ratings, doesn't help matters. 4 bbl carbs have much smaller primaries than the 2bbls so cruising on primaries 'should' be more economical. While having superior flow up top. Would like to try a 465 or 570 out, but 600s have been proven to work time and again on these lumps, just have to decide how to mount it... 1 Quote Link to comment Share on other sites More sharing options...
cletus Posted June 15, 2021 Share Posted June 15, 2021 Yeah I had a 500 holley 2bbl on a car I had a while ago and it sucked, the good thing is they are quite sought after for probably speedway like you say so I was able to sell it and get a 4bbl 500 new for only slightly more What do you rev it to? I seem to remember an article on them in a magazine years ago that mentioned something about 250s having a bore/stroke/rod length combo that didnt like high rpm Quote Link to comment Share on other sites More sharing options...
Bearded Baldy Posted June 15, 2021 Author Share Posted June 15, 2021 I have taken it to 6k a few times and it does it well enough but throws the waterpump belt any higher than that. If i ever get to drive it regular again i will add a deflector pulley or change the brackets around. The best way to get them to rev is put the 200ci rods in them with special pistons, but acl stopped making the pistons a decade or so ago. There is one guy in oz who takes his to 7500 on the strip but he has many years and mega cash in his motor. Sounds horny as with triple webbers on it though. 3 Quote Link to comment Share on other sites More sharing options...
yetchh Posted June 15, 2021 Share Posted June 15, 2021 19 minutes ago, Bearded Baldy said: If i ever get to drive it regular again i will prob upgrade to an intech.. Fixed.. 1 1 Quote Link to comment Share on other sites More sharing options...
Bearded Baldy Posted June 16, 2021 Author Share Posted June 16, 2021 1 hour ago, yetchh said: Fixed.. Yuck. Why would i want smooothness and easy starting? I am strictly in the no cert way of thinking. 1 Quote Link to comment Share on other sites More sharing options...
yetchh Posted June 16, 2021 Share Posted June 16, 2021 It's a bit of a running joke.. Are the 250's iron head or alloy? Quote Link to comment Share on other sites More sharing options...
Bearded Baldy Posted June 16, 2021 Author Share Posted June 16, 2021 Both. Early like mine are iron. They made half a dozen different versions of the alloyhead from 1980ish to 1990. I think it is something rediculous like 40kg weight difference in the heads by memory. Quote Link to comment Share on other sites More sharing options...
Bearded Baldy Posted August 14, 2021 Author Share Posted August 14, 2021 Colourscheme ideas for when body is finished.... Back to oe spec colour and vinyl roof was the gameplan. But part of me thinks that satin black body, no trim strip, black vinyl roof. Gloss black bumpers and cragars. Chrome around front and rear screens, and gutter channel chrome, would look choice. Throw some ideas at me fellas. Quote Link to comment Share on other sites More sharing options...
cletus Posted August 14, 2021 Share Posted August 14, 2021 I really like satin or matt black but I do think it makes the car look cheaper, like you cant afford a "proper" paint job Which is fine if that's the look you want or if the car is a bit of a beater anyway That factory colour is nice IMO a respray in that colour and keep all the factory chrome 3 Quote Link to comment Share on other sites More sharing options...
westy Posted August 14, 2021 Share Posted August 14, 2021 I’ll second that. 1 Quote Link to comment Share on other sites More sharing options...
Lord Gruntfuttock Posted August 14, 2021 Share Posted August 14, 2021 Agree completely. If factory colour was shit then yes, but that's sweet, and black looks like you're hiding something... Maybe colour matched bumpers too? 1 Quote Link to comment Share on other sites More sharing options...
Bearded Baldy Posted August 14, 2021 Author Share Posted August 14, 2021 Yeah i just did the satin black version on forza, looked better in my head. So oe spec it is. Looks much better irl too. Going for a quick shakedown run today, need to turn it around so may as well go up n down the street a few times to shake the last cobwebs off. Quote Link to comment Share on other sites More sharing options...
tortron Posted August 14, 2021 Share Posted August 14, 2021 Same colour but satin could pop 1 Quote Link to comment Share on other sites More sharing options...
Bearded Baldy Posted August 14, 2021 Author Share Posted August 14, 2021 Noice Quote Link to comment Share on other sites More sharing options...
yetchh Posted August 19, 2021 Share Posted August 19, 2021 Ruh roh!...... Quote Link to comment Share on other sites More sharing options...
yetchh Posted August 21, 2021 Share Posted August 21, 2021 Baited breath to see what's going on up the front... Knowing falcons.. 1 Quote Link to comment Share on other sites More sharing options...
Bearded Baldy Posted August 21, 2021 Author Share Posted August 21, 2021 17 minutes ago, yetchh said: Baited breath to see what's going on up the front... Knowing falcons.. That is future baldies problem. Still trying to figure out where i am putting the bits i have taken off already. 1 Quote Link to comment Share on other sites More sharing options...
yetchh Posted August 21, 2021 Share Posted August 21, 2021 Back seat.. Thats where all dreams are made. Quote Link to comment Share on other sites More sharing options...
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