SB Road Racing/Nascar/Sprint Car/Reving BUDGET BUILD

HI guys,

Please take kindly to the title as it's an attention grabber to get some of the old heads in here to help out.

I will clear the air before we get that one guy in here, my plan is to build a 73 Duster Multi purpose car that I can drive on the street/weekend/Road Race (laguna, sears point, willow) etc.

I want to do this from the ground up and instead of throwing in the Gen3 hemi I have right away, I want to do a budget build to R&D from the ground up using what Mother Mopar has already made. I will have a 6 speed TR6060 with a shortened 5th and 6th gear for the trans and then a 8 3/4 with 4.10 SureGrip. The car the engine will be in will be around 3000 lbs.

My "IDEA" is to get a stock 318-360 LA/Magnum and push the limits on her and really see what breaks and what doesn't, but before I go cowboy on this. I wanted to bring in the voices that have been doing this longer than I have to maybe guide my route on what would be the better base engine to work with.

What I want to do or had in mind was starting with a stock engine, running it and seeing what she does and then slowly mod the engine and track the progress for R&D. Eventually I would like to help others in this MOPAR world like most of you have done for me, but I figure what would be better than a ground up journal build tracking a base engine build.

Today everyone wants to go fast and we all have been guilty of throwing parts to go fast or say we make this and that number, but I wanted to take it back and maybe be someone who says "****, I did that with a stock bottom end 318 and this is what we did to survive or this is what we ran into."

So I know that I may not be the first to do this, but I really want the challenge of taking the high road and testing on the road, not on a dyno.

So I hope any advice would or guidance would help..



Right now I have access to a 69 318 which I believe made 230hp and 340tq or I could look into a bare block 340 or a magnum 318/360 from the yard.

I'd like to go the cheapest route as many people starting off here won't have the budget or knowledge to go any other route. Plus a lot of the information I grew up learning from y'all is stored WAY BACK in the archives of this website.


SO Here is to the budget builders...
Considering budget up front, run what you have, the 318. Now we all.know torque and power come easier with more cubes. That can be limited by class regs.
The TransAm 302 Chevs and Fords with their 3.00" strokes raced running to 9,000RPM but to pass or stay ahead could run to.9,500RPM. The destroked 340's at 304CID ran up to 9,500 but could be pushed to 10,000RPM. Pontiac ran destroked 400 engines but I have no idea what they reved to.
For the Boss 302 TransAm race connecting rods, special rods were available that were considerably stronger but heavier than the stout OEM rods. These were definately not what you could consider budget built engines. For the day, they were putting out about 475HP from 305CID engines. Competition regs gave carb throttle bore maximum diameter that boiled down to a special (read expensive) 820CFM? carb that could be purchased from the dealer parts dept. With todays better cam profiles technology and valve springs more power should be available.