427 Iron block Stroker $3599
12-14-2010, 02:09 PM
#64
Staging Lane
Join Date: May 2008
Location: Washington State
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Are there any issues with running a 383? As I understand it the liners are pretty thin after honing. Wondering how the rod angle with the 4in. Stroke has an effect on cylinder life.
12-14-2010, 03:17 PM
#65
Rod angle is increased over factory, Ran my own 402 for 30k miles, Diamond pistons I had no usual wear. 2618 pistons score very easy, while the skirt may look scored its not worn, skirt mic's same as new.
Increasing stroke will add more angle 4.100, 4.250, issues will be more noticeable.
01-05-2011, 02:51 PM
#68
No issues with 383, typical 408 produces more power for the same price though.
Rod angle is increased over factory, Ran my own 402 for 30k miles, Diamond pistons I had no usual wear. 2618 pistons score very easy, while the skirt may look scored its not worn, skirt mic's same as new.
Increasing stroke will add more angle 4.100, 4.250, issues will be more noticeable.
Rod angle is increased over factory, Ran my own 402 for 30k miles, Diamond pistons I had no usual wear. 2618 pistons score very easy, while the skirt may look scored its not worn, skirt mic's same as new.
Increasing stroke will add more angle 4.100, 4.250, issues will be more noticeable.
does your 408 and 415/416 use a 4.000 stroke?
01-13-2011, 07:17 PM
#71
408 Iron LQ9 $3390 + shipping
Callies Compstar LSc crankshaft
Compstar H beam connecting rods (ARP 2000 bolts)
CP-Pistons flat top or -13.8cc dish
NPR ring set - gas nitrided steel top ring, napier 2nd
Durabond cam bearings
King HP main /rod bearings
Callies Compstar LSc crankshaft
Compstar H beam connecting rods (ARP 2000 bolts)
CP-Pistons flat top or -13.8cc dish
NPR ring set - gas nitrided steel top ring, napier 2nd
Durabond cam bearings
King HP main /rod bearings
01-19-2011, 05:22 PM
#75
Teching In
Join Date: Dec 2004
Location: sugarland,texas
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whats the max nitrous the 408ci package in post #71 can take.and what compression ratios can you get with it.also do you have any head and cam packages that would go good with it.
01-25-2011, 01:06 AM
#78
We have a sonic thickness gauge, we've taken iron blocks out to 4.080, the thrust side of bore measures .200" +/-, the area I find becomes thin is between the bores, at 3 o'clock position, it gets down to .130" wall thickness, not anywhere near the thrust side.
I would not recommend this 427 package for a power adder engine. Our 390 engine is a better overall package for up to 91mm turbocharger, D1SC, etc.
427 shortblock engine in my opinion is the most economical foundation to build a 500rwhp street driven combination. Many people on this forum have ported stock heads, LS3 heads etc. combined with this shortblock should put you at 500rwhp where a 408 would need higher flowing high dollar heads to produce that number.
01-25-2011, 12:58 PM
#79
Nitrous i'd stick to 250hp.
Cylinder heads , 317 heads, hand ported, milled, 5 angle valve job 2.02/1.57 valves, gold .650" springs.
Those on a 408, long block, $5990 includes
Cylinder heads installed.
GM MLS gaskets
ARP head studs
Comp Cam
JP Double Row timing set
LS7 lifters, factory lifter buckets
We are also dealer for MAST, TFS, AFR, Patriot
Let me know what you're looking for?