Talking about big block chevs my old man is building a 32 3 window coupe he is running a genuine ls7 unstamped block from what we know they were ment for the 1970 Corvette only one car ever got made with this engine what would the value of this motor b any ideas its got the proper heads on it with ls7 high performance on them
They never went into production vehicles, heaps sold as crate engines. So they aren't valuable to a restorer but they are to some buyers. Is it an iron or alloy headed LS7? The heads I just bought are 1974 LS7 iron.
shes iron head pretty cool thing to have though i guess
it is tunnel rammed on straight gas we havnt fired it up yet hopfuly in the next month or so id put a pic up for yous but i carnt struggling
I have to agree with times and taste changing. I used to be OK with modified bodies, wide rims etc but never liked flares, spoilers etc. Now I like original appearance, but don't give a stuff about what is hidden unless it is a survivor car or some sort of special eg a styling car.Originally Posted by Innuendo
Comfort and safety are good. This is why I have a 2011 SR5 and not an old 70's tonner as an everyday driver. And also why I prefer autos today.
Probably the same heads as what I just bought. Cast number ends in 990
Il have a look 2day when I head round there to see I'm on a mission to day putting a top loader in my one tonner cart wait to take it for a spin in a few weeks its a tunnel rammed small block with 4.44 diff should b a ton of fun
See how long it takes to break it. My mate used to smash toploaders to pieces with a relatively tame 350 SBC (350-400hp). Had to go back to a Muncie as he got sick of changing boxes. I think he went through 3 or 4 in a 12 month period! The 4.44 Salisbury might give up before the toploader though, although the lack of traction in a tonner will help. Sounds like fun!
Here is some pictures of the Mark IV 990 BBC LS6/&7 heads I picked up today. First few photos show a Gen VI 454 truck head for comparison:
990 chamber.jpg990 exhaust.jpg990 intake.jpg
I couldn't easily pull a red-black carby 308/304 head out for comparison but I had some old VN heads that I stuck next to them. You can swee how they dwarf the VN ports.
990 VN exhaust.jpg990 VN inlet.jpg
The heads look like they have been de-shrouded around the valves a little and they appear to have been cc'd at 134cc. Stock ones are claimed 118cc which will mean compression with the TRW replica 1969 L88/ZL1 piston drops from around 12-12.5:1 to about 10.5-11:1 which given I have an L72 cam rather than an L88 cam will probably be better anyway, at least it has a chance of running on 98 or 100 octane fuel.
Its awesome when you compare the VN head to the BB. Small blocks are comical once you start playing with big blocks
You going for injection or N/A?
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