Heads...Alum or iron?

[echoecho11]

Slowride.... yes the LT5 is a good example... moving on to the new LS1/LS6 would be also. I'm one to get a littel up set when they refer these new engines as SBC's. they dont share the same bore / stroke or even the same firing order as my L98, fact is they have no interchagable parts with my 350. looking at them from a mecanics point of vue you can see they are desined to be built in many bore/stroke combonations,IE muttible desplacments. ( hay wate a minit SBC's started out as 265's and I jest read a artical were some body took there 427 bored and stroked SBC from CAL. to the Salt Flats, ran 200+ then drove it home. OK thats nothing new.) they have no destributor because they have a ring mounted on the crank to tell their multipule coils when to fire.(coils have a chance to cool so spark voltage stays high and consistant. ever ask a NASCAR guy why he has 2 coils under his hood) well they drive the oil pump off the crank." huh" the roller cam does not even have a gear on it and it and its roller rocker arms dont twist and it takes much less power to open and close the valves.( in 87 when chevy went to the roler cam they dropped the 305. the 4.3 -sawed of 350- v6 with a roller cam made more power.) thats not new drag rasers and the roundy round boys been doing that for years. ok ok what about this six bolt main all ALU block with the sunk crank shaft. these make simular tork/HP as LT4s but because of less internal loss rev much quicker(less to turn motor more to turn wheels) and wight less. ok ok I give. I'm dam glad they don'T make them like they use too..................bring on them new SMALL BLOCK CHEVY"S

 

[vets4-2]

If given the choice what would you rather have, given all options the same...Aluminum or Iron heads?

the answer is simple allways aluminum.

 

[echoecho11]

SLOWRIDE ...... ah....I forgot... would you mention to Edmond that the new ZO6 427 Lingfelter crank kits are making me have dreams........ the sticky kind:Silly

 

[Edmond]

In my view the LT-5 is an excellent example of the durability of aluminum. Those beasts are virtually bullet-proof. IMHO

Nick

No, I think they literally are bullet proof motors!

Echo,

Anything Lingenfelter makes will give us the sticky kind of dreams!:L

 

[SlowRide]

SLOWRIDE ...... ah....I forgot... would you mention to Edmond that the new ZO6 427 Lingfelter crank kits are making me have dreams........ the sticky kind:Silly

The 427 is an option that GM could make available to the public if they wanted to. The C5-R racing block can be purchased through GM for around $6,500.00. Dave McLellan states in his latest book "A naturally aspirated 7.4 liter Gen III based on the C5-R block and head should produce 525 net hp". That would be streetable, dependable, brute power.

Last year at the ZR1 Gathering at Bowling Green KY, I watched John Lingenfelter run a TT ZR1 down the track. I do not remember the exact times but I think that it ran the quarter in the high nines. I would like to see what a TT 427 C5 would do.....if they could get it to hook up. The TT ZR1 was awesome and John didn't "baby" it. Another testament to the durability and design of the LT-5. And to the talents of John Lingenfelter.