I'm getting a 429 Thunderjet for my Torino, called summit guy said he never heard of one, Guess I'll have to get numbers and go that route,is there a website with any info on the thunderjet?all replies appreciated!
429-460 "Lima" engine
Basically, ALL 429's are Thunderjets, EXCEPT FOR:
* 429 Cobra Jet 70-71
* 429 Super Cobra Jet 70-71
* 429 Boss 69-70
* 429 Police 72
The best 429 TJ are from 1968-71.
These are cast piston [not same piston as 429cj but cast, 4 valve reliefs], broached rod / square bolt head. Small port heads, small 2.06 x 1.66 valves, small intake, small cam [190-202 at .050 lobe], small exhaust manifolds, 600cfm Autolite carb on top. 10.5 cr. They were rated at 360hp but in my opinion made about 320-325 gross hp, which is about 240-250 net hp during those years. The small cam and crappy exhaust ports really hurt the 429TJ.
The 429cj added
* 4-bolt mains sometimes but any Lima block is plenty strong
* football head rod bolts for a stronger rod
* cast pistons with only 2 but bigger valve reliefs
* Bigger heads with sewer-pipe sized intake ports and a little better exhaust ports, 2.24 x 1.73 valves. 11.3 compression
* a decent cam at 220-230 duration
* A taller big port intake with a GM Quadrajet on top about 700cfm
* Better exhaust manifolds
* About 405 gross HP. MAYBE 370 net HP if you had a really good loose engine and the cold air option and no extra belt drives. Usually about 330 net HP.
The 429scj added to the CJ:
* forged pistons, also 11.3 CR
* adjustatle valve train [some early 429cj had this also]
* solid cam at 230-230 duration, basically same cam Ford had run in the old 390HiPo, 406, and 427-4v.
* Big intake, iron, same as the CJ but with a Holley 780 pattern
* Holley 780 on top
* About 410 gross HP, again MAYBE 370 net in a really well built example, most were 340-350 net HP.
You can make the 429TJ into about the equal of a 429CJ/SCJ pretty easy and cheap:
* Put the bigger 2.24 x 1.73 valves in your base heads
* Use the 429scj iron intake [the ports dont match but it doesnt matter], or a modern aluminum equivalent
* 1-7/8 headers
* Either a comp 270H or comp 270S cam or similar
* A 780 Holley or 800 double pumper on top
also 460ford.com is a good site for this engine.
I had a few Torinos back in the 1970s when they were dirt cheap, fun cars. Paid $15 for my first complete shaker assembly. The trim ring for the hood was an extra $10 new, that was the pricey part! We just threw all the snorkels in the trash. LOL.