UC V8 conversion
#1
Posted 10 June 2006 - 02:33 AM
will be used daily and once every two weeks at the drags.
#2 _Herne_
Posted 10 June 2006 - 09:38 AM
UC Dragster with a Turbo pattern 308, 40th over - running a TH 350. Why? I hear you ask.. because it's what I have sitting around in the shed. Actually to be honest I have these items stored at a friends place lol.
Mine will be a dedicated drag car so it will be interesting to see what recommendations are made here engine wise.
It will be a lower end of the budget build up and hopefully giving somewhere around a 12 second pass, I figure any faster will cost me dollars I don't have nor could probably get without a major engine sponsor.
I will be keenly watching this thread.
Cheers
Herne
#3
Posted 10 June 2006 - 12:54 PM
so you went with the 308 block because it was there or did you put it aside for this project.I will be going through the same exercise very soon now.
UC Dragster with a Turbo pattern 308, 40th over - running a TH 350. Why? I hear you ask.. because it's what I have sitting around in the shed. Actually to be honest I have these items stored at a friends place lol.
Mine will be a dedicated drag car so it will be interesting to see what recommendations are made here engine wise.
It will be a lower end of the budget build up and hopefully giving somewhere around a 12 second pass, I figure any faster will cost me dollars I don't have nor could probably get without a major engine sponsor.
I will be keenly watching this thread.
Cheers
Herne
i will be looking at 13 seconds.
Edited by ALX76, 10 June 2006 - 12:57 PM.
#4
Posted 10 June 2006 - 02:36 PM
JMHO
#5
Posted 10 June 2006 - 02:51 PM
so the faster the better but must have impecable manners.
anyway i was more concitering starting with the heads and going from there.
block selection is unimportant at this stage.
Edited by ALX76, 10 June 2006 - 02:55 PM.
#6
Posted 10 June 2006 - 03:04 PM
#7
Posted 10 June 2006 - 03:09 PM
#8
Posted 10 June 2006 - 03:14 PM
chev or holden.go with HQ heads
any suggestions on valve sizes or spring instaled height/pressure.
#9
Posted 10 June 2006 - 03:20 PM
VN heads sound good but most peep seem to dump the injection.I would be going for a set of vn heads with a dual plane manifold to start with for a carby set up but I reckon an injection set up would be even better as it would make more power than a b cast head & have nice street manners as well.I love the vs s3 5l injection on my lc as it has a reasonable amount of power & just about anyone with common sense can drive it to.If you really want the car to be streetable,run 12s then I would be looking at a stroker,then vn heads but in the end it all comes down to budget which is why most just go to a vn injection set up.
what difference will a stroker make to choosing heads.
#10
Posted 10 June 2006 - 03:26 PM
maybe you should try Cleveland heads on it.......
#11
Posted 10 June 2006 - 04:00 PM
#12 _Herne_
Posted 10 June 2006 - 05:13 PM
I am using the 308 because I just ahd it. At the time we got the 308's we hadn't planned a dragster. The TH 350 was purchased for another plan.so you went with the 308 block because it was there or did you put it aside for this project.I will be going through the same exercise very soon now.
UC Dragster with a Turbo pattern 308, 40th over - running a TH 350. Why? I hear you ask.. because it's what I have sitting around in the shed. Actually to be honest I have these items stored at a friends place lol.
Mine will be a dedicated drag car so it will be interesting to see what recommendations are made here engine wise.
It will be a lower end of the budget build up and hopefully giving somewhere around a 12 second pass, I figure any faster will cost me dollars I don't have nor could probably get without a major engine sponsor.
I will be keenly watching this thread.
Cheers
Herne
i will be looking at 13 seconds.
Cheers
Herne
#13
Posted 10 June 2006 - 06:32 PM
sorry, you assumed i was starting with a block. no motor yet.well you cant fit chev heads on a holden engine, so assuming you are planning on fitting a holden V8 in it the chev heads would be useless.
maybe you should try Cleveland heads on it.......
i was told the best place to start a build was with a set of heads.
#14
Posted 10 June 2006 - 06:33 PM
to save money then should i run a chev.With a stroker you will have more torque which means that you can use a smaller torque converter & taller gears making the car more streetable especially if you want it to be dual purpose whereas if you want to make the same kind of power with a 308 you will need a bigger cam,bigger stall,shorter gears & rev it harder than if you had a stroker engine.If you plan to drive it daily & race occasionally a stroker would be more suitable than trying to do it with a 5l,especially if you want to do 12s & keep it streetable.
#15 _MAWLER_
Posted 10 June 2006 - 06:59 PM
So we have a 12 second aim in a very streetable package, which is a good start.
What sort of budget are we talking about here, because that will have a big influence in what you should choose.
How much work are you also willing to carry out, because that will determine chev or holden. Is there any more work to installing a chev in a UC than installing a 308? If the work required is pretty similar then a chev could be a better bet because of its larger capacity.
All this sort of information will help people to offer better, more specific advice.
Peace,
#16
Posted 10 June 2006 - 07:06 PM
budget will be around $5500. instalation and labour (besides machine work) are not to be included.I think you are perhaps going about this the wrong way. It would be best to set out some sort of paramiters that will determine type of motor etc you will need rather than picking heads out of thin air.
So we have a 12 second aim in a very streetable package, which is a good start.
What sort of budget are we talking about here, because that will have a big influence in what you should choose.
How much work are you also willing to carry out, because that will determine chev or holden. Is there any more work to installing a chev in a UC than installing a 308? If the work required is pretty similar then a chev could be a better bet because of its larger capacity.
All this sort of information will help people to offer better, more specific advice.
Peace,
would i be better off choosing a block or complete motor first, then a cam shaft and heads to suit.
Edited by ALX76, 10 June 2006 - 07:08 PM.
#17 _[BOTTLEDUP]_
Posted 10 June 2006 - 09:39 PM
For 11sec I'd look at a 350 Chev with a set of AFR 185cc alloys, Performer RPM Air-Gap, 750 Demon or D/P Holley, Comp Xtreme Energy solid cam, hyperutectic F/top pistons, std crank and rods with ARP bolts through out. Put together in a good block (2 bolt will be ok) and the usual machining you'd have a nice streetable combo that will run 11s all day every day (providing of course you can get the power to the ground)
#18
Posted 10 June 2006 - 09:48 PM
Don't be offended but 5.5K will not go too far toward a streetable 12 sec combo. It would be easy to spend that on a diff, gearbox and convertor capable of reliable 12's. I am not trying to put you off, just letting you know how it is. I have run 12's in a daily driver but I was willing to put up with welded banjo diffs and slippery convertors. Would you be prepared to carry spare axles and change them on the side of the road with your wife and kids ? I didn't think so. It isn't all about the engine, its the whole combo, and if you want it as a daily driver it has to hang together as well, particularly if you are carting the family around.
#19
Posted 10 June 2006 - 10:49 PM
i am trying to select the best heads and build my combination from that.
i dont have a motor, i dont have a gear box and i dont have a diff.
this is a project, i havent rushed out to buy anything yet.
just looking for advise on were to start, with the most suitable heads or the most suitable bottom end that will give me enough torque in a 1250kg car to compete at the drags, change the tyres and the next day drop the kids off at school then off to work.
there is no set quarter time, i just mentioned 12's be nice, wouldnt be ashamed if ill be pullen 13's.
#20
Posted 10 June 2006 - 10:54 PM
late crate motor no probs for pollution but engineers for cubes at 350 as only allowed 40% cube increase 202 at 40% equalls 282.8 so same goes for 308.,Jun 10 2006, 09:39 PM] Not sure on the legislation where you are regarding small block Chev's into Torries, but if its allowed then a 350 will be under less stress than a 308 would be to make the same power...
1 user(s) are reading this topic
0 members, 1 guests, 0 anonymous users