Quote:
Originally Posted by Rock36
Some of my thoughts on the matter.
First Topic:
I'm not sure which 4.6L Mustangs that were being beaten with that straight six 4.8L engine from 1978. I don't see it being stronger than any of the smaller modular 4.6L V8 engines from 1996 to present even if it has more displacement. Take the new M3, that V8 is a paltry 4.0L and will destroy both engines.
I would imagine that straight six 4.8L from almost 30 years ago has heads that don't flow very well, a conservative cam, and is still carburated. Also, since it is the an engine from the late 70s it probably also has a really low compression ratio which also robs performance from the engine despite its larger displacement.
I couldn't actually find stats on the 4.8L engine mentioned (there was only a 4.1L that I can find) but the highest output from a 1978 Camaro was the LM1 5.7L engine that produced 185hp@4000 and 280ft-lbs of torque @ 2400 rpm. The 4.1 L inline 6 from that year only makes 110hp, so I would guess a 4.8L I6 would be somewhere between 110 and 185hp.
http://www.camarosource.ca/php/camar...pecs&year=1978 |
the engine I have is a 292 4.8L inline 6. it was made as a truck motor but was installed in my car. I contacted my local dealership when I got the car and they informed me that some engines were "left over" and were put into the base model camaros. (like how some 4th genners out there have LT4 motors left over from the vettes). it has a custom cam from Clifford performance 264 cam is ground at .206 @ .050, ported and polished heads, 4bbl 650cfm carb, 3-speed on the floor out to a 12 bolt rear end with 3.73's. I have never dyno'd her but the fastest 1/4 run Ive had so far is 12.6
and there's a turbo system in the works.
