Hi all... Ive been lurking around this forum for quite some time and posted on a few occassions, whilst building my new slingshot dragster here in the UK. Its finished and we have been out for our first few test runs so i thought id put up a post so you guys can see it, and also thank a few people.
Right - this is the first dragster we have ever built, and as such has been a massive learning curve. Before this we had never built our own chassis, built a large american engine (largest we got is the 215ci alluminium buick based rover v8), narrowed a back axle to name just a few of the jobs we have done to make this car.
The car has been built on a budget by myself and my father, i speced the engine based off a mixture of what was available, builds i have seen on here and advice from local racers. Here is the motor spec:
Stock 460 block bored +60
Kb 403 pistons
(these are from a budget ebay stroker kit... i know these things arent the best but for now they are what i have managed to get and im limiting my expectations based off this... i will be keeping the RPM's below 6500 - the kit has been balanced)
Edelbrock Performer RPM CJ heads
Edelbrock Victor manifold (non dominator)
Cam research 245/255, 590/615, 110 Lsa Solid Flat Tappet Cam, bedded in on their machine.
950 Holley Carb
Crane Pro Billet dizzy
Crane HI-6N Ignition box (with rev limiter)
Crane LX92 coil
Stage 1 oil pump from Paul Kane (MANY MANY THANKS)
SFI Flexplate, SFI Damper
Fueling is from a Barry Grant 280 GPH pump
The box is a rebuilt C6 (The guy i brought it off said it has been rebuilt by a local gearbox guy, but im doubting if the guy who rebuilt it did a good job) now fitted with a Tran brake manual reverse pattern valve body.
4600 Stall torque convertor
Ford 9 inch with Moser 33 spline shafts, moser spool, strange carrier and 3.89 pro gears.
Currently fitted are a set of 31 x 15 slicks (if my memory serves me correctly) but we are changing to 33.5 inch tall wider slicks.
I also have a nitrous kit which im limiting to a maximum 125 hp if we need to use it to get into the 8's (eventually).
Im aiming for 8.90's and super comp eventually, but we have a lot to learn on the way.
My first test pass in the car was a mid 13 with no top gear on a very very green track
Over the weekend i ran [email protected]
on a very cold but prepped track, with problems in first gear and again no 3rd gear.
First gear feels like your driving with the brakes on, you really have to put some revs on to get the car to move. In 2nd the car moves fine and really pulls hard... Shift to 3rd and it just seems to stay in second, although with the car on stands i can get 3rd gear fine.
Thanks go to Roy Wilding (UK), Webster Race Engineering (UK), Zane LLewelyn (UK), Paul Kane, The Mad Porter, and anyone else who has given me there advice.
Any more advice would be very much welcomed.