|01-20-2013 01:23 PM|
LM4 / LM7 Gen 3 snag
Hit a (major?) bump.
The gen 3 requires as far as I am reading a 14 1/8" 168 tooth flywheel.
My kelmark special adapter for SBC to corvair diff is 14." Plus the gen 3 pushes the flywheel into the bellhousing / adapater 0.4" deeper. Looks like I need to scrap the gen 3 plan, or mill out my adapter (if even possible) or cast / fab a new adapater (not gonna happen).
Anyone know of a work around I might not yet have read about?
most of my info is from this very nice car craft article on using gen 3 and classic trans (my config is the corvair diff and saginaw 4 speed).
Engine and Transmission Swap Gen III - Car Craft Magazine
|01-17-2013 02:22 AM|
|01-17-2013 01:52 AM|
2003–2004 Chevrolet TrailBlazer EXT
2003–2004 Isuzu Ascender
2004 GMC Envoy XL
2003–2004 Chevrolet SSR
2004 Buick Rainier
|01-17-2013 01:51 AM|
I'd start with the local little newspapers from the grocery store. If you know all the cars/trucks that had that motor in them ahead of time, you could scan those papers first. I used to drive around and look behind fences/barns/abandoned buildings and sometimes I'd find one sitting at the edge of the road or the curb in residential areas. I wouldn't go to a boneyard except if there is no other way. Check the local auctions such as police auctions. Look on craigslist. I used to check the section "Projects" in Ebay Motors.
|01-17-2013 01:41 AM|
|mikebuongiorno||probably buy the car and sell the rest right?|
|01-17-2013 01:41 AM|
dang. I think thats just the ticket.
You guys are the best, will keep you posted.
From a sourcing perspective, is this something you think is readily available at a local yard, or where would you look I guess is a better way to ask?
|01-17-2013 12:23 AM|
4.8L All alloy
295 BHP @5600rpm
305 ft/lbs @4800rm
Looks very much like the missing piece of the puzzle. Thanks 1Gary.
I think I'd try to find a donor and use everything out of it, wiring, computer and all.
|01-17-2013 12:10 AM|
|mikebuongiorno||4.8 gen III sounds like might be my engine. will do some more research.|
|01-16-2013 11:41 PM|
|01-16-2013 11:34 PM|
A 4.8 Gen III is a all aluminum engine.Light,late torque curve,good hp ratings.
I remember a guy who used a Tornado trans axle with a high hp 350.
|01-16-2013 11:20 PM|
The kelmark config (mine) goes block, diff, tranny. Plenty of legroom over the crown (about a foot more I think) A quill shaft/input shaft is weak link though, and the ring gear spins in reverse.
What are some of the hot rod tricks I can employ for dealing with the torque shock on that shaft ? Does a 11-12" clutch with heavy duty springs help? Does a heavy flywheel / balancer combo help?
Found a guy with a zz4 crate, practically new, roller cam, aluminium heads, for $800. Thinking cam that thing and exercise restraint !
So many options, so to summarize whats on the table:
-zz4 crate for $800 with 500 autocross racing miles on it (feels like a good deal)
-new 350/290 from jegs $1900 (i like this too, mostly for the price)
-Craigslist 283 or 327 (feels like the right CID to save the driveline)
-Gen III smaller displacement crate (have no experience with this)
-aluminium 215 rover (would be an awesome option, keeping the car light has tons of benefit)
My ultimate goal is light mid engine sports car for windy roads that will wind up to 6000-6500, 300HP/300TQ < $5k complete is the goal. With the budget I think the 215 and the gen 3 with computer will be tough, a new or pr
|01-16-2013 06:35 PM|
|poncho62||The Kelmark kit had more room than the Crown setup.......One you has to turn the transaxle around, the other you didnt....dont remember which was which|
|01-16-2013 06:15 PM|
|01-16-2013 06:12 PM|
|poncho62||I'm thinking that a 4.3 would work nice....Chevy bolt pattern, lots of perf parts available....the shorter length would work nice behind the seat|
|01-16-2013 05:16 PM|
|vinniekq2||215 rover with a cam sounds tough,thats about all|
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