I happened upon an old 241 hemi, it's a truck hemi. Picked it up to put in one of my coupes. This would be my first hemi and any help would be greatly appreciated. Do any of the parts interchange with these early ones? As far as the water pump I see adapters for sbc pumps but what will work with that 4port factory setup? I've found some adapters already for trannys. Can't wait to get working on it! Thanks for any info!
Go to Scooter's Hemi page on here...you'll choke on all the resources and info there. There are PLENTY of Hemi gurus on here - ask and you shall receive the knowledge!
I had one in my 39 Chevy coupe a few years back that came out of a 53 Dodge. I Bored and balanced it and installed Jahns pistons,Crower cam and Weiand manifold with 4 "97's".I used the 3 speed with OD that came with Dodge.Great engine........I beat the hell out of it and it just kept asking for more
There's a 241 build on webrodder. Custom pistons are needed, your truck engine is probably 6:1 in real C/R.
The heads swap onto a 270 poly block and those are pretty plentiful, gives you more cubic inches. Pistons need to be replaced, but if you're rebuilding it anyway...
If the lower end is solid as in doesn't need a bore etc I would leave it @ 6:1 and put a blower on it. At that compression ratio even with small bores you have lots of room to push air/fuel mix in there.
PB, I like the way you think. We just finished up building and installing a 355 ci 4 bolt SBC in my boys 58 Apache that was static 8.2 CR. We installed a Weiand 142 with a 4150 Holley running 7-8 psi boost and that thing really came alive when we hooked up the blower belt. It is worth every dollar it cost!
http://www.jalopyjournal.com/forum/album.php?albumid=35110&pictureid=402810 runs good with 3 x stromberg
You can even overcome smallish ports with a blower, head work helps but if you can't or don't want to do a lot of port work you can force the mix through thee. Rich I have said it before but it is worh mention again. I just love that goofy looking little car. I wish you still had it or I did.
I did buy another Bantam about this time last year. A 37 or 8 pickup. It is making progress, but wont look much like the old one. But then i don't look much like i did either. 50 years. damn, it's hard to believe it went by that fast.
Oh I know. i keep hoping I'll grow up. Any way i look at it 70 is old. But then you go to Bonneville and 70 seems about normal.
You can adapt an aftermarket water pump, but you will still need to fabricate the upper crossover with thermostat housing between the heads.
The 241 does not have provisions for side mounts it mounts from the front of the engine and will require a custom fabricated mount, other that that its a great engine. Parts are available but not cheep. Check E-Bay for intakes etc. My friend is doing one now and finding a useable cam was the hardest part, he ended up with a NOS Racer Brown mild grind.
Thanks for all the great pics and info guys, dug into it a little tonight and so far so good nice and clean. Definitely going in a 't' or an 'a' coupe. Probably multiple carb, but a small blower would be nice too!
Gary, This one of 9 Track Roadsters that I built, it has a Hot Heads front cover along with a front mount and header flanges for 1.5/8" pipe that I produce for the little Dodge. BTW it has 19,000 miles on it. CG kidd, That is an Offy adapter with a late 60's Ford trans with the T-150 Jeep top.
Actually 70 @ B-Ville is slow unless you are on a mini bike. There is an upside to getting older that I have discovered as of late. We know some stuff, the down side is that we have absolutely no excuse for totally screwing up a car or a bike. I do hope to see 70 and I hope I see it from behind a wind screen.
I'd thinking the compression is like the pass cars at 7.1 and the pistons are more than likely T slots not the best with a suppercharger.
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